public comment no. 10-nfpa 13-2017 [ global input ] statement … · 2017-10-27 · public comment...

Public Comment No. 10-NFPA 13-2017 [ Global Input ]

Note to 13R & 13 - regarding sprinklers in closets with ventless dryers. Coordinate with NFPA 13D FR23.See NFPA 13D - FR 23 & NFPA 13R - FR 51.

Additional Proposed Changes

File Name Description Approved

CCN_11.pdf 13_CCN11

Statement of Problem and Substantiation for Public Comment

NOTE: This Public Comment appeared as CC Note No. 11 in the First Draft Report on First Revision No. 891.

Related Item

First Revision No. 891-NFPA 13-2016 [Section No. 8.3.2.5]

Submitter Information Verification

Submitter Full Name: Cc On Aut-Aac

Organization: NFPA

Affilliation: CC on Automatic Sprinkler Systems

Street Address:

City:

State:

Zip:

Submittal Date: Thu Mar 02 14:29:57 EST 2017

Committee Statement

CommitteeAction:

Rejected

Resolution: NFPA 13, 13R, and 13D all require sprinklers in closets with ventless cloths dryers to be of theintermediate temperature classification.

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

1 of 518 10/27/2017, 7:12 AM

Correlating Committee Note No. 11-NFPA 13-2016 [ Section No. 8.3.2.5 ]


Submitter Full Name: David Hague

Organization: National Fire Protection Assoc

Street Address:

City:

State:

Zip:

Submittal Date: Thu Dec 08 09:53:21 EST 2016

Committee Statement

CommitteeStatement:

Note to 13R & 13 - regarding sprinklers in closets with ventless dryers. Coordinate with NFPA13D FR23. See NFPA 13D - FR 23 & NFPA 13R - FR51.

First Revision No. 891-NFPA 13-2016 [Section No. 8.3.2.5]

Ballot Results

This item has passed ballot

20 Eligible Voters

3 Not Returned

16 Affirmative All

0 Affirmative with Comments

0 Negative with Comments

1 Abstention

Not Returned

Kim, Andrew

Mitchell, Brock

Stultz, Douglas Paul

Affirmative All

Baz, Jose R.

Bell, Kerry M.

Bless, Jr., Ralph E.

Franson, Scott T.

Hilton, Luke

Hoffman, Alex

Huggins, Roland J.

Javeri, Sultan M.

Ketner, Charles W.


15 of 26 3/2/2017 11:04 AM

LeBlanc, John A.

Linder, Kenneth W.

Lowrey, David O.

Palenske, Garner A.

Seghi, Adam

Thompson, J. Michael

Valentine, Victoria B.

Abstention

Friedman, Michael J.

absent of information that would enable me to make a decision, I abstain on all ballots on all referenceddocuments


16 of 26 3/2/2017 11:04 AM


Please indicate specifically which figure is to be added from previous edition (1999 edition?).



CCN_6.pdf 13_CCN6



Related Item

First Revision No. 682-NFPA 13-2016 [Section No. 8.6.5.2.1.5]



Organization: NFPA


Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: NOTE: This Public Comment appeared as CC Note No. 6 in the First Draft Report on FirstRevision No. 682. Adds clarification for spacing of sprinklers around obstructions at ceiling.


2 of 518 10/27/2017, 7:12 AM

Correlating Committee Note No. 6-NFPA 13-2016 [ Section No. 8.6.5.2.1.5 ]




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Please indicate specifically which figure is to be added from previous edition (1999edition?).

First Revision No. 682-NFPA 13-2016 [Section No. 8.6.5.2.1.5]

Ballot Results


20 Eligible Voters

3 Not Returned

16 Affirmative All



1 Abstention

Not Returned

Kim, Andrew

Mitchell, Brock


Affirmative All

Baz, Jose R.

Bell, Kerry M.


Franson, Scott T.

Hilton, Luke

Hoffman, Alex

Huggins, Roland J.

Javeri, Sultan M.

Ketner, Charles W.


17 of 26 3/2/2017 11:04 AM

LeBlanc, John A.

Linder, Kenneth W.

Lowrey, David O.

Palenske, Garner A.

Seghi, Adam



Abstention




18 of 26 3/2/2017 11:04 AM


Appears to be addressed in wrong section. Location has meaning, we should verify that it is underthe correction section.



CCN_12.pdf 13_CCN12


NOTE: This Public Comment appeared as CC Note No. 12 in the First Draft Report.

Related Item

Correlating Committee Note No. 12-NFPA 13-2016 [Section No. 10.2.7.3.1]



Organization: NFPA


Street Address:

City:

State:

Zip:


Committee Statement

Committee Action: Rejected

Resolution: Not certain what the CC intent was.


3 of 518 10/27/2017, 7:12 AM

Correlating Committee Note No. 12-NFPA 13-2016 [ Section No. 10.2.7.3.1 ]




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Appears to be addressed in wrong section. Location has meaning, we should verify that it isunder the correct section.

Ballot Results


20 Eligible Voters

3 Not Returned

16 Affirmative All



1 Abstention

Not Returned

Kim, Andrew

Mitchell, Brock


Affirmative All

Baz, Jose R.

Bell, Kerry M.


Franson, Scott T.

Hilton, Luke

Hoffman, Alex

Huggins, Roland J.

Javeri, Sultan M.

Ketner, Charles W.

LeBlanc, John A.


19 of 26 3/2/2017 11:04 AM

Linder, Kenneth W.

Lowrey, David O.

Palenske, Garner A.

Seghi, Adam



Abstention




20 of 26 3/2/2017 11:04 AM


Correlate with changes to NFPA 13R, FR12, differences may be appropriate.



CCN_4.pdf 13_CCN4



Related Item

First Revision No. 695-NFPA 13-2016 [New Section after 8.10.4.1]



Organization: NFPA


Street Address:

City:

State:

Zip:


Committee Statement


Resolution: Changes have been correlated with NFPA 13R, FR12.


4 of 518 10/27/2017, 7:12 AM

Correlating Committee Note No. 4-NFPA 13-2016 [ New Section after 8.10.4.1 ]




Street Address:

City:

State:

Zip:


Committee Statement

Committee Statement: Corrrelate with changes to NFPA 13R, FR12, differences may be appropriate.

First Revision No. 695-NFPA 13-2016 [New Section after 8.10.4.1]

Ballot Results


20 Eligible Voters

3 Not Returned

16 Affirmative All



1 Abstention

Not Returned

Kim, Andrew

Mitchell, Brock


Affirmative All

Baz, Jose R.

Bell, Kerry M.


Franson, Scott T.

Hilton, Luke

Hoffman, Alex

Huggins, Roland J.

Javeri, Sultan M.

Ketner, Charles W.

LeBlanc, John A.


21 of 26 3/2/2017 11:04 AM

Linder, Kenneth W.

Lowrey, David O.

Palenske, Garner A.

Seghi, Adam



Abstention




22 of 26 3/2/2017 11:04 AM


Review other types of sidewall sprinklers to determine if modifications need to be made to Sections 8.6,8.7, 8.8 & 8.9 in addition to 8.10.



CCN_5.pdf 13_CCN5



Related Item

First Revision No. 697-NFPA 13-2016 [Section No. 8.10.7.2.2]



Organization: NFPA


Street Address:

City:

State:

Zip:


Committee Statement


Resolution: Sidewall sprinklers have been reviewed and no further changes are needed.


5 of 518 10/27/2017, 7:12 AM

Correlating Committee Note No. 5-NFPA 13-2016 [ Section No. 8.10.7.2.2 ]




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Review other types of sidewall sprinklers to determine if modifications need to be made toSections 8.6, 8.7, 8.8 & 8.9 in addition to 8.10.

First Revision No. 697-NFPA 13-2016 [Section No. 8.10.7.2.2]

Ballot Results


20 Eligible Voters

3 Not Returned

16 Affirmative All



1 Abstention

Not Returned

Kim, Andrew

Mitchell, Brock


Affirmative All

Baz, Jose R.

Bell, Kerry M.


Franson, Scott T.

Hilton, Luke

Hoffman, Alex

Huggins, Roland J.

Javeri, Sultan M.

Ketner, Charles W.


23 of 26 3/2/2017 11:04 AM

LeBlanc, John A.

Linder, Kenneth W.

Lowrey, David O.

Palenske, Garner A.

Seghi, Adam



Abstention




24 of 26 3/2/2017 11:04 AM


Please review to determine if appropriate for NFPA 13 or, if inappropriate submit to NFPA 25.



CCN_7.pdf 13_CCN7



Related Item

First Revision No. 839-NFPA 13-2016 [Section No. A.7.8.2.5]



Organization: NFPA


Street Address:

City:

State:

Zip:


Committee Statement


Resolution: Committee agrees this belongs in NFPA 25.


6 of 518 10/27/2017, 7:12 AM

Correlating Committee Note No. 7-NFPA 13-2016 [ Section No. A.7.8.2.5 ]




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Please review to determine if appropriate for NFPA 13 or, if inappropriate submit to NFPA25.

First Revision No. 839-NFPA 13-2016 [Section No. A.7.8.2.5]

Ballot Results


20 Eligible Voters

3 Not Returned

16 Affirmative All



1 Abstention

Not Returned

Kim, Andrew

Mitchell, Brock


Affirmative All

Baz, Jose R.

Bell, Kerry M.


Franson, Scott T.

Hilton, Luke

Hoffman, Alex

Huggins, Roland J.

Javeri, Sultan M.

Ketner, Charles W.


25 of 26 3/2/2017 11:04 AM

LeBlanc, John A.

Linder, Kenneth W.

Lowrey, David O.

Palenske, Garner A.

Seghi, Adam



Abstention




26 of 26 3/2/2017 11:04 AM


Find and replace all instances of "unexpanded" referencing Group A plastics with "nonexpanded"for consistency throughout the reorganized document.


The use of "nonexpanded" has become preferred over "unexpanded" when referencing Group A plastics that are not "expanded". Previously there has been some consistency within chapters as the usage has been updated piecemeal but not throughout the document. The reorganization is an ideal time to make this term consistent throughout the standard and its annexes.

At least one change, introduced in FR-791, has indicated the need to change "unexpanded" to the preferred "nonexpanded". This change should be implemented globally.

Related Item

FR-791


Submitter Full Name: Robert Upson

Organization: National Fire Sprinkler Association

Affilliation: NFSA Engineering and Standards Committee

Street Address:

City:

State:

Zip:

Submittal Date: Tue May 09 15:43:48 EDT 2017

Committee Statement

CommitteeAction:

Accepted

Resolution: SR-531-NFPA 13-2017

Statement: The use of "nonexpanded" has become preferred over "unexpanded" when referencing Group Aplastics that are not "expanded". Previously there has been some consistency within chapters asthe usage has been updated piecemeal but not throughout the document. The reorganization is anideal time to make this term consistent throughout the standard and its annexes.

At least one change, introduced in FR-791, has indicated the need to change "unexpanded" to thepreferred "nonexpanded". This change should be implemented globally.

FR#774 required "uncartoned" to be changed to "exposed" throughout the document.


7 of 518 10/27/2017, 7:12 AM


PI 513 proposes to modify table 13.2.1 that is proposed to be delted by re-org. The Correlating Committeerequests that the table be reviewed for either revision or deletion.



CCN_1.pdf 13_CCN1



Related Item

Public Input No. 513-NFPA 13-2016 [Section No. 13.2.1]

First Revision No. 860-NFPA 13-2016 [Global Input]



Organization: NFPA


Street Address:

City:

State:

Zip:


Committee Statement


Resolution: See actions taken on PC#313. language added in Chapter 4.


8 of 518 10/27/2017, 7:12 AM

Correlating Committee Note No. 1-NFPA 13-2016 [ Global Input ]




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

PI 513 proposes to modify table 13.2.1 that is proposed to be deleted by re-org. The CorrelatingCommittee requests that the table be reviewed for either revision or deletion.


Ballot Results


20 Eligible Voters

3 Not Returned

16 Affirmative All



1 Abstention

Not Returned

Kim, Andrew

Mitchell, Brock


Affirmative All

Baz, Jose R.

Bell, Kerry M.


Franson, Scott T.

Hilton, Luke

Hoffman, Alex

Huggins, Roland J.

Javeri, Sultan M.


1 of 26 3/2/2017 11:04 AM

Ketner, Charles W.

LeBlanc, John A.

Linder, Kenneth W.

Lowrey, David O.

Palenske, Garner A.

Seghi, Adam



Abstention




2 of 26 3/2/2017 11:04 AM


"Change 'Biocide' to 'Bacterial Inhibitor' throughout"


"Biocide" is a product that must be registered with the EPA and must be used in strict accordance with the label. Furthermore, Biocide applications are required to be applied by a DEC licensed pesticide applicator. Applications must be documented by the applicator and all application records filed with the DEC on an annual basis. "Biocide" should be changed to "Bacterial inhibitor" or "Biostatic inhibitor".

Related Item

PI-35-NFPA 13-2016

PI-44-NFPA 13-2016


Submitter Full Name: Tim O'Leary

Organization: Huguenot Laboratories

Affilliation: President and CEO

Street Address:

City:

State:

Zip:

Submittal Date: Thu Apr 06 15:30:12 EDT 2017

Committee Statement

CommitteeAction:

Accepted


Statement: "Biocide" is a product that must be registered with the EPA and must be used in strict accordancewith the label. Furthermore, Biocide applications are required to be applied by a DEC licensedpesticide applicator. Applications must be documented by the applicator and all application recordsfiled with the DEC on an annual basis. "Biocide" should be changed to "Bacterial inhibitor" or"Biostatic inhibitor".


9 of 518 10/27/2017, 7:12 AM


Wording needs to be cleaned up and technical substantiation needs to be provided for any newmaterial. Verify that no new technical material was added. Review annex language to verifyaccuracy.



CCN_10.pdf 13_CCN10



Related Item




Organization: NFPA


Street Address:

City:

State:

Zip:


Committee Statement

Committee Action: Accepted


Statement: See new Word Doc for Chapter 25 addressing all in-rack requirements.


10 of 518 10/27/2017, 7:12 AM





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Wording needs to be cleaned up and technical substantiation needs to be provided for any newmaterial. Verify that no new technical material was added. Review annex language to verifyaccuracy.


Ballot Results


20 Eligible Voters

3 Not Returned

16 Affirmative All



1 Abstention

Not Returned

Kim, Andrew

Mitchell, Brock


Affirmative All

Baz, Jose R.

Bell, Kerry M.


Franson, Scott T.

Hilton, Luke

Hoffman, Alex

Huggins, Roland J.

Javeri, Sultan M.


3 of 26 3/2/2017 11:04 AM

Ketner, Charles W.

LeBlanc, John A.

Linder, Kenneth W.

Lowrey, David O.

Palenske, Garner A.

Seghi, Adam



Abstention




4 of 26 3/2/2017 11:04 AM


PI 426 & 450 proposes to add text that is proposed to be deleted by re-org. Review Section for eitherrevision or deletion.



CCN_2.pdf 13_CCN2


NOTE: This Public Comment appeared as CC Note No. 2 in the First Draft Report on First Revision No. 862, and is also related to Public Input Nos. 426 and 450.

Related Item


Public Input No. 426-NFPA 13-2016 [Section No. 16.1.2.4]

Public Input No. 450-NFPA 13-2016 [Section No. 17.1.2.9]



Organization: NFPA


Street Address:

City:

State:

Zip:


Committee Statement





11 of 518 10/27/2017, 7:12 AM





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

PI 426 & 450 proposes to add text that is proposed to be deleted by re-org. Review Sectionfor either revision or deletion.


Ballot Results


20 Eligible Voters

3 Not Returned

16 Affirmative All



1 Abstention

Not Returned

Kim, Andrew

Mitchell, Brock


Affirmative All

Baz, Jose R.

Bell, Kerry M.


Franson, Scott T.

Hilton, Luke

Hoffman, Alex

Huggins, Roland J.

Javeri, Sultan M.

Ketner, Charles W.


5 of 26 3/2/2017 11:04 AM

LeBlanc, John A.

Linder, Kenneth W.

Lowrey, David O.

Palenske, Garner A.

Seghi, Adam



Abstention




6 of 26 3/2/2017 11:04 AM


The discharge committee should request the Task Group to review artwork and eliminate redundancy.



CCN_8.pdf 13_CCN8



Related Item




Organization: NFPA


Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: At this time the Technical Committee, to the best of its ability, with the time allotted, has reviewedthe art work and eliminated redundancy where possible.


12 of 518 10/27/2017, 7:12 AM





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The discharge committee should request the Task Group to review artwork and eliminateredundancy.


Ballot Results


20 Eligible Voters

3 Not Returned

15 Affirmative All



1 Abstention

Not Returned

Kim, Andrew

Mitchell, Brock


Affirmative All

Baz, Jose R.

Bell, Kerry M.


Franson, Scott T.

Hilton, Luke

Hoffman, Alex

Javeri, Sultan M.

Ketner, Charles W.

LeBlanc, John A.


7 of 26 3/2/2017 11:04 AM

Linder, Kenneth W.

Lowrey, David O.

Palenske, Garner A.

Seghi, Adam



Affirmative with Comment

Huggins, Roland J.

The Committee Statement is too broad. I think this was intended to direct a review of the Figures with in-racksprinklers shown outside the boundary of the rack.

Abstention




8 of 26 3/2/2017 11:04 AM


Definitions need to be reviewed and should be modified to remove any requirements in accordancewith the manual of style. Underlined text should be reviewed to determine if new language needs atechnical substantiation.



CCN_9.pdf 13_CCN9



Related Item




Organization: NFPA


Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: At this time the Technical Committee, to the best of its ability, with the time allotted, has reviewedthe definitions and modified or removed any requirements in accordance with the manual of style,where deemed necessary.


13 of 518 10/27/2017, 7:12 AM





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Definitions need to be reviewed and should be modified to remove any requirements inaccordance with the manual of style. Underlined text should be reviewed to determine if newlanguage needs a technical substantiation.


Ballot Results


20 Eligible Voters

3 Not Returned

16 Affirmative All



1 Abstention

Not Returned

Kim, Andrew

Mitchell, Brock


Affirmative All

Baz, Jose R.

Bell, Kerry M.


Franson, Scott T.

Hilton, Luke

Hoffman, Alex

Huggins, Roland J.

Javeri, Sultan M.


9 of 26 3/2/2017 11:04 AM

Ketner, Charles W.

LeBlanc, John A.

Linder, Kenneth W.

Lowrey, David O.

Palenske, Garner A.

Seghi, Adam



Abstention




10 of 26 3/2/2017 11:04 AM


Please review metric units for consistency throughout the document.



CCN_13.pdf 13_CCN13


NOTE: This Public Comment appeared as CC Note No. 13 in the First Draft Report.

Related Item

Correlating Committee Note No. 13-NFPA 13-2016 [Section No. 1.6]



Organization: NFPA


Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: NOTE: This Public Comment appeared as CC Note No. 13 in the First Draft Report. Metric unitshave been reviewed in entire document and will be revised based on the attached word document.these units have been reviewed and agreed to by the Metric Task Group.


14 of 518 10/27/2017, 7:12 AM

Correlating Committee Note No. 13-NFPA 13-2016 [ Section No. 1.6 ]




Street Address:

City:

State:

Zip:


Committee Statement

Committee Statement: Please review metric units for consistency throughout the document.

Ballot Results


20 Eligible Voters

3 Not Returned

16 Affirmative All



1 Abstention

Not Returned

Kim, Andrew

Mitchell, Brock


Affirmative All

Baz, Jose R.

Bell, Kerry M.


Franson, Scott T.

Hilton, Luke

Hoffman, Alex

Huggins, Roland J.

Javeri, Sultan M.

Ketner, Charles W.

LeBlanc, John A.

Linder, Kenneth W.


11 of 26 3/2/2017 11:04 AM

Lowrey, David O.

Palenske, Garner A.

Seghi, Adam



Abstention




12 of 26 3/2/2017 11:04 AM


Marine definitions appear in both chapters 3 and 25. Review definitions and keep in Chapter 3 only.



CCN_3.pdf 13_CCN3



Related Item

First Revision No. 825-NFPA 13-2016 [Section No. 3.10.2]



Organization: NFPA


Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: NOTE: This Public Comment appeared as CC Note No. 3 in the First Draft Report on FirstRevision No. 825. Definitions to be removed form Marine chapter and retained in Chapter 3 only.


15 of 518 10/27/2017, 7:12 AM

Correlating Committee Note No. 3-NFPA 13-2016 [ Section No. 3.10.2 ]




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Marine definitions appear in both chapters 3 and 25. Review definitions and keep inChapter 3 only.

First Revision No. 825-NFPA 13-2016 [Section No. 3.10.2]

Ballot Results


20 Eligible Voters

3 Not Returned

16 Affirmative All



1 Abstention

Not Returned

Kim, Andrew

Mitchell, Brock


Affirmative All

Baz, Jose R.

Bell, Kerry M.


Franson, Scott T.

Hilton, Luke

Hoffman, Alex

Huggins, Roland J.

Javeri, Sultan M.

Ketner, Charles W.


13 of 26 3/2/2017 11:04 AM

LeBlanc, John A.

Linder, Kenneth W.

Lowrey, David O.

Palenske, Garner A.

Seghi, Adam



Abstention




14 of 26 3/2/2017 11:04 AM

Public Comment No. 247-NFPA 13-2017 [ Section No. 1.7.2.1 ]

1.7.2.1*

Devices and equipment utilized to perform automated inspection and testing procedures that are notsubjected to system pressure pressure or are not integral to the operation of the system during a fireevent shall not be required to be listed.


The additional text correlates this allowance with section 7.1.1.5.

Related Public Comments for This Document

Related Comment Relationship

Public Comment No. 250-NFPA 13-2017 [Section No. 1.7.2.2]

Related Item

FR No. 722


Submitter Full Name: Terry Victor

Organization: TycoSimplexGrinnell

Street Address:

City:

State:

Zip:

Submittal Date: Wed May 10 10:40:52 EDT 2017

Committee Statement


Resolution: See action on Comment 165, section was deleted.


16 of 518 10/27/2017, 7:12 AM

Public Comment No. 165-NFPA 13-2017 [ Sections 1.7.2.1, 1.7.2.2 ]

Sections 1.7.2.1, 1.7.2.2

1.7.2.1 *

Devices and equipment utilized to perform automated inspection and testing procedures that are notsubjected to system pressure shall not be required to be listed.

1.7.2.2 *

Devices and equipment utilized to perform distance monitoring of system or component status that are notsubjected to system pressure shall not be required to be listed.


During the Technical Committee 1st Draft Meeting the TC voted to resolve this item, because it was felt that Chapter 1 was not the appropriate place to discuss listing requirements for these devices.

Additionally, the changes to A.7.1.1.5 in accordance with FR-722 provides sufficient guidance on this subject, so the text added to Sections 1.7.2.1, A.7.1.2.1, 1.7.2.2 and A.1.7.2.2 is all redundant.

Related Item

FR-834


Submitter Full Name: Larry Keeping

Organization: PLC Fire Safety Solutions

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: During the Technical Committee 1st Draft Meeting the TC voted to resolve this item, because itwas felt that Chapter 1 was not the appropriate place to discuss listing requirements for thesedevices.

Additionally, the changes to A.7.1.1.5 in accordance with FR-722 provides sufficient guidance onthis subject, so the text added to Sections 1.7.2.1, A.7.1.2.1, 1.7.2.2 and A.1.7.2.2 is allredundant.


17 of 518 10/27/2017, 7:12 AM


1.7.2.2*

Devices and equipment utilized to perform distance monitoring of system or component status that are notsubjected to system pressure shall not pressure or are not integral to the operation of the system during afire event shall not be required to be listed.


Correlates this allowance with section 7.1.1.5.




Public Comment No. 253-NFPA 13-2017 [Section No. A.1.7.2.2]

Related Item

FR No. 722




Street Address:

City:

State:

Zip:


Committee Statement


Resolution: See action on Comment 165, section was deleted.


18 of 518 10/27/2017, 7:12 AM

Public Comment No. 56-NFPA 13-2017 [ Section No. 2.3.4 ]


19 of 518 10/27/2017, 7:12 AM

2.3.4 ASTM Publications.


20 of 518 10/27/2017, 7:12 AM

ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959.

ASTM A53/A53M, Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded andSeamless, 2012.

ASTM A106/A106M, Standard Specification for Seamless Carbon Steel Pipe for High Temperature Service,2015.

ASTM A135/A135M, Standard Specification for Electric-Resistance-Welded Steel Pipe, 2009, reapproved2014.

ASTM A153A/153M, Standard Specification for Zinc Coating (Hot Dip) on Iron and Steel Hardware, 2016.

ASTM A234/A234M, Standard Specification for Piping Fittings of Wrought-Carbon Steel and Alloy Steel forModerate and High Temperature Service, 2015.

ASTM A536, Standard Specification for Ductile Iron Castings, 2014.

ASTM A795/A795M, Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Weldedand Seamless Steel Pipe for Fire Protection Use, 2013.

ASTM B32, Standard Specification for Solder Metal, 2008, reapproved 2014.

ASTM B43, Specification for Seamless Red Brass Pipe, Standard Sizes, 2015.

ASTM B75/B75M, Standard Specification for Seamless Copper Tube, 2011.

ASTM B88, Standard Specification for Seamless Copper Water Tube, 2014.

ASTM B251, Standard Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy Tube, 2010.

ASTM B446, Standard Specification for Nickel-Chromium-Molybdenum-Columbium Alloy (UNSN 06625)and Nickel-Chromium-Molybdenum-Silicon Alloy (UNSN 06219) Rod and Bar, 2003, reapproved 2014.

ASTM B813, Standard Specification for Liquid and Paste Fluxes for Soldering Applications of Copper andCopper-Alloy Tube, 2016.

ASTM B828, Standard Practice for Making Capillary Joints by Soldering of Copper and Copper Alloy Tubeand Fittings, 2002, reapproved 2010.

ASTM C635/C635M, Standard Specification for the Manufacture, Performance, and Testing of MetalSuspension Systems for Acoustical Tile and Lay-In Panel Ceilings, 2013a.

ASTM C636/C636M, Standard Practice for Installation of Metal Ceiling Suspension Systems for AcousticalTile and Lay-In Panels, 2013.

ASTM E84, Standard Test Method for Surface Burning Characteristics of Building Materials,2015b 2016 .

ASTM E119, Standard Test Methods for Fire Tests of Building Construction and Materials, 2016 2016a .

ASTM E136, Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750°C,2016 2016a .

ASTM E2652, Standard Test Method for Behavior of Materials in a Tube Furnace with a Cone-shapedAirflow Stabilizer, at 750°C, 2016

ASTM E2768, Standard Test Method for Extended Duration Surface Burning Characteristics of BuildingMaterials, (30 min Tunnel Test), 2011.

ASTM F437, Standard Specification for Threaded Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic PipeFittings, Schedule 80, 2015.

ASTM F438, Standard Specification for Socket-Type Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic PipeFittings, Schedule 40, 2015.


ASTM F442/F442M, Standard Specification for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe(SDR-PR), 2013e1.

ASTM F1121, Standard Specification for International Shore Connections for Marine Fire Applications,1987, reapproved 2015.

ASTM SI10, Standard for Use of the International System of Units (SI): The Modern Metric System, 2010.


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Update a few dates and add reference to ASTM E2652, needed for linked PC



Public Comment No. 54-NFPA 13-2017 [New Section after 4.10]

Public Comment No. 57-NFPA 13-2017 [Section No. F.1.2.6]

Related Item

public input 56


Submitter Full Name: Marcelo Hirschler

Organization: GBH International

Street Address:

City:

State:

Zip:


Committee Statement



Statement: Update a few dates and add reference to ASTM E2652, needed for linked PC


22 of 518 10/27/2017, 7:12 AM


2.3.6 AWWA Publications.

American Water Works Association, 6666 West Quincy Avenue, Denver, CO 80235.

AWWA C104/A21.4, Cement-Mortar Lining for Ductile Iron Pipe and Fittings,2013.

AWWA C105/A21.5, Polyethylene Encasement for Ductile Iron Pipe Systems,2010.

AWWA C110/A21.10, Ductile Iron and Gray Iron Fittings, 2012.

AWWA C111/A21.11, Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings,2012.

AWWA C115/A21.15, Flanged Ductile-Iron Pipe with Ductile-Iron or Gray-Iron Threaded Flanges,2011.

AWWA C116/A21.16, Protective Fusion-Bonded Epoxy Coatings Internal and External Surface Ductile-Ironand Gray-Iron Fittings, 2009, Erratum, 2010.

AWWA C150/A21.50, Thickness Design of Ductile Iron Pipe,2014.

AWWA C151/A21.51, Ductile-Iron Pipe, Centrifugally Cast,2009.

AWWA C153/A21.53, Ductile-Iron Compact Fittings, 2011.

AWWA C200, Steel Water Pipe 6 in. (150 mm) and Larger,2012, Errata, 2012.

AWWA C203, Coal-Tar Protective Coatings and Linings for Steel Water Pipe,2015.

AWWA C205, Cement-Mortar Protective Lining and Coating for Steel Water Pipe 4 in. (100 mm) and Larger— Shop Applied,2012.

AWWA C206, Field Welding of Steel Water Pipe,2011.

AWWA C207, Steel Pipe Flanges for Waterworks Service — Sizes 4 in. Through 144 in. (100 mm Through3,600 mm), 2013.

AWWA C208, Dimensions for Fabricated Steel Water Pipe Fittings, 2012.

AWWA C300, Reinforced Concrete Pressure Pipe, Steel-Cylinder Type,2011.

AWWA C301, Prestressed Concrete Pressure Pipe, Steel-Cylinder Type, 2014.

AWWA C302, Reinforced Concrete Pressure Pipe, Non-Cylinder Type, 2011.

AWWA C303, Reinforced Concrete Pressure Pipe, Bar-Wrapped, Steel-Cylinder Type, Pretensioned, 2008.

AWWA C400, Withdrawn.


AWWA C600, Installation of Ductile-Iron Water Mains and Their Appurtenances,2010.

AWWA C602, Cement-Mortar Lining of Water Pipe Lines 4 in. (100 mm) and Larger, 2011.


AWWA C900, Polyvinyl Chloride (PVC) Pressure Pipe, 4 in. Through 12 in. (100 mm Through 300 mm), forWater Transmission and Distribution, 2007, Errata, 2008.

AWWA C906, Polyethylene (PE) Pressure Pipe and Fittings, 4 in. Through 63 in. (100 mm Through 1,650mm), for Waterworks, 2015.

AWWA M11, A Guide for Steel Pipe Design and Installation, 4th edition, 2004.


Reference is made to the statement of problem and substantiation of Public Comment No.15-NFPA 24-2017 [ Section No. 10.1.1.1 ] .

Related Item


23 of 518 10/27/2017, 7:12 AM

Public Input No. 24-NFPA 24-2016 [ Section No. 10.1.1.1 ]



Public Comment No.15-NFPA 24-2017 [ Section No. 10.1.1.1 ]


Submitter Full Name: Ariel Carp

Organization: On my behalf

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: The committee does not believe that steel pipe should be used for underground service unlesslisted.


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3.3.9 Automated Inspection and Testing.

The use of procedures or equipment for the performance of inspections and testing of components testsat a distance from the system or component being inspected or tested through the use of electronicdevices or equipment installed for the purpose.


This comment is in support of the definition for Automated Inspection and Testing but seeks consistency between the related NFPA Standards. This language was approved by the NFPA 20 committee and should be correlated with NFPA 13, NFPA 13R and NFPA 14.

Related Item

FR-719





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: This comment is in support of the definition for Automated Inspection and Testing but seeksconsistency between the related NFPA Standards. This language was approved by the NFPA 20committee and should be correlated with NFPA 13, NFPA 13R and NFPA 14.


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3.3.34 Cloud Ceiling.

Any ceiling system installed in the same plane with horizontal openings to the structure above on all two ormore sides. This does not include sloped ceilings as defined in 3.3.27.3.


The original research used four open sides because that created a more challenging scenario. Rejecting this allowance for fewer openings whereby less heat can get past the lower ceiling needs better justification than simply blindly applying the test protocol without considering the impact of a change. Sound fire protection engineering supports this change. I considered repeating the other PI that had no reference to sides but a single opening likely is not viewed as a cloud ceiling but just a small opening in the ceiling which is already addressed under concealed spaces.

Related Item

PI-479


Submitter Full Name: Roland Huggins

Organization: American Fire Sprinkler Association

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: The original research used four open sides because that created a more challenging scenario.Rejecting this allowance for fewer openings whereby less heat can get past the lower ceiling needsbetter justification than simply blindly applying the test protocol without considering the impact of achange. Sound fire protection engineering supports this change. I considered repeating the other PIthat had no reference to sides but a single opening likely is not viewed as a cloud ceiling but just asmall opening in the ceiling which is already addressed under concealed spaces.


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3.3.40 Compartment.

A space completely enclosed by walls and a ceiling. Each wall in the compartment is permitted to haveopenings to an adjoining space if the openings have a minimum lintel depth of 8 in. (200 mm) from theceiling and the total width of the openings in each wall does not exceed 8 ft (2.4 m) every 40 linear feet . Asingle opening of 36 in. (900 mm) or less in width without a lintel is permitted where there are no otheropenings to adjoining spaces every 40 linear feet .


This was noted to be a CI during the first draft meetings and should not have been accepted as a FR.

Related Item

FR 812


Submitter Full Name: Louis Guerrazzi


Affilliation: NFSA E&S Committee

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: This was noted to be a CI during the first draft meetings and should not have been acceptedas a FR.


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3.3.95 High-Piled Storage.

Solid-piled, palletized, rack storage, bin box, and shelf storage of Class I to IV commodities in excess of12 ft (3.7 m) in height and solid -piled, palletized, rack storage, bin box, and shelf storage of Group Aplastic commodities in excess of 5 ft (1 . 5 m) in height.


During the First Draft meeting, PI-437 was resoved with the committee statement the the matter was already addressed in the reformat. However, in the First Draft Report, the definitions for high piled storage and for low-piled storage have not been revised. Therefore, the definitions are still misleading:

High-Piled Storage - As per Section 3.9.1.15, a high-challenge fire hazard is typical of that produced by fires in combustible high-piled storage. However, the challenge provided by Group A plastic commodities is considerably higher than that from Class I to IV commodities stored to the same height. For example, as per Table 15.2.6(a), for a ceiling height of 20.1 ft, storage to 12 ft of Group A cartoned, nonexpanded commodities in a stable pile requires a design criteria of 0.60 gpm/ft² with a design area of 2500 ft², whereas as per Table 13.2.1, Class I to IV commodities stored under those same conditions only require an OH2 design of 0.20 gpm/ft² over 1500 ft².

Low-Piled Storage – According to First Revision No. 311 from the previous cycle, the definition for low-piled storage was introduced as an editorial matter, to better reflect that Chapter 13 is not just for miscellaneous storage. However, since the definition does not differentiate between commodity types, there is an implication that Chapter 13 should apply to general storage of Group. A to 12 ft, when in fact, the scope of Chapter 13 is for just 5 ft maximum storage, as directed by 15.2.1 and 17.2.1.1.

Revised definitions are therefore offered to resolve the discrepancies of the current definitions.

Related Item

PI-437

PI-180




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected but held

Resolution: The proposed definition does not allow for all arrangements of storage. A blanket definition of 5 ft.Group A plastic storage does not allow for protection in accordance with miscellaneous storage.Further clarification is needed to address this issue as the proposed definition may cause conflictswith other codes. Further discussion of this issue is warranted. A Task Group will review for nextcycle.


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3.3.115* Limited-Combustible (Material).

Refers to a building construction material not complying with the definition of noncombustible material that,in the form in which it is used, has a potential heat value not exceeding 3500 Btu/lb (8100 kJ/kg), wheretested in accordance with NFPA 259, and includes either of the following: (1) materials having a structural

base of noncombustible material, with a surfacing not exceeding a thickness of 1 ⁄ 8 in. (3.2 mm) that has aflame spread index not greater than 50; or (2) materials, in the form and thickness used, having neither aflame spread index greater than 25 nor evidence of continued progressive combustion, and of suchcomposition that surfaces that would be exposed by cutting through the material on any plane would haveneither a flame spread index greater than 25 nor evidence of continued progressive combustion, whentested in accordance with ASTM E84, Standard Test Method of Surface Burning Characteristics of BuildingMaterials, or ANSI/UL 723, Standard Test Method of Surface Burning Characteristics of BuildingMaterials .

(see 4.11)


The definition of limited combustible material presented here is different from what is shown in all major NFPA documents, including NFPA 1, NFPA 101 and NFPA 5000. Moreover, these documents (and many others) have moved the definition of limited combustible and of non-combustible to a mandatory portion of the document, within the body of the document.





Public Comment No. 55-NFPA 13-2017 [Section No. 3.3.130]

Related Item

Public Input 13




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: As proposed the comment would apply to materials beyond construction materials which is aninappropriate application of the limited combustible materials for the purposes of this standard.Including pass and fail criteria is appropriate in a definition.


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3.3.119* Low-Piled Storage.

Solid-piled, palletized, rack storage, bin box, and shelf storage of Class I to IV commodities up to 12 ft (3.7m) in height and solid- piled , palletized, rack storage, bin box, and shelf storage of Group A plasticcommodities up to 5 ft (1 . 5 m) in height .


During the First Draft meeting, PI-437 was resoved with the committee statement the the matter was already addressed in the reformat. However, in the First Draft Report, the definitions for high piled storage and for low-piled storage have not been revised. Therefore, the definitions are still misleading:

High-Piled Storage - As per Section 3.9.1.15, a high-challenge fire hazard is typical of that produced by fires in combustible high-piled storage. However, the challenge provided by Group A plastic commodities is considerably higher than that from Class I to IV commodities stored to the same height. For example, as per Table 15.2.6(a), for a ceiling height of 20.1 ft, storage to 12 ft of Group A cartoned, nonexpanded commodities in a stable pile requires a design criteria of 0.60 gpm/ft² with a design area of 2500 ft², whereas as per Table 13.2.1, Class I to IV commodities stored under those same conditions only require an OH2 design of 0.20 gpm/ft² over 1500 ft².

Low-Piled Storage – According to First Revision No. 311 from the previous cycle, the definition for low-piled storage was introduced as an editorial matter, to better reflect that Chapter 13 is not just for miscellaneous storage. However, since the definition does not differentiate between commodity types, there is an implication that Chapter 13 should apply to general storage of Group. A to 12 ft, when in fact, the scope of Chapter 13 is for just 5 ft maximum storage, as directed by 15.2.1 and 17.2.1.1.

Revised definitions are therefore offered to resolve the discrepancies of the current definitions.

Related Item

PI-437




Street Address:

City:

State:

Zip:


Committee Statement

Committee Action: Rejected but held

Resolution: Further discussion of this issue is warranted. A Task Group will review for next cycle.


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3.3.130 Noncombustible Material.

A material that, in the form in which it is used and under the conditions anticipated, will not ignite, burn,support combustion, or release flammable vapors, when subjected to fire or heat; materials that arereported as passing ASTM E136, Standard Test Method for Behavior of Materials in a Vertical TubeFurnace at 750°C, shall be considered noncombustible materials.

(see 4.11)


The definition of noncombustible material presented here is different from what is shown in all major NFPA documents, including NFPA 1, NFPA 101 and NFPA 5000. Moreover, these documents (and many others) have moved the definition of limited combustible and of non-combustible to a mandatory portion of the document, within the body of the document.





Related Item

public input 14




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected



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3.3.206.4 * Sprinkler System.

A system that consists of an integrated network of piping designed in accordance with fire protectionengineering standards that includes a water supply source, a water control valve, a waterflow alarm, and adrain. The portion of the sprinkler system above ground is a network of specifically sized or hydraulicallydesigned piping installed in a building, structure, or area, generally overhead, and to which sprinklers areattached in a systematic pattern. The system is commonly activated by heat from a fire and dischargeswater over the fire area.

3.3.206.4.1 Antifreeze Sprinkler System.

A wet pipe system using automatic sprinklers that contains a liquid solution to prevent freezing of thesystem, intended to discharge the solution upon sprinkler operation, followed immediately by water from awater supply.

3.3.206.4.2 Circulating Closed-Loop Sprinkler System.

A wet pipe sprinkler system having non–fire protection connections to automatic sprinkler systems in aclosed-loop piping arrangement for the purpose of utilizing sprinkler piping to conduct water for heating orcooling, where water is not removed or used from the system but only circulated through the piping system.

3.3.206.4.3 Combined Dry Pipe–Reaction Sprinkler System.

A sprinkler system employing automatic sprinklers attached to a piping system containing air underpressure with a supplemental detection system installed in the same areas as the sprinklers. Operation ofthe detection system actuates tripping devices that open dry pipe valves simultaneously and without loss ofair pressure in the system. The detection system also serves as an automatic fire alarm system.

3.3.206.4.4 Deluge Sprinkler System.

A sprinkler system employing open sprinklers or nozzles that are attached to a piping system that isconnected to a water supply through a valve that is opened by the operation of a detection system installedin the same areas as the sprinklers or the nozzles. When this valve opens, water flows into the pipingsystem and discharges from all sprinklers or nozzles attached thereto.

3.3.206.4.5 Dry Pipe Sprinkler System.

A sprinkler system employing automatic sprinklers that are attached to a piping system containing air ornitrogen under pressure, the release of which (as from the opening of a sprinkler) permits the waterpressure to open a valve known as a dry pipe valve, and the water then flows into the piping system andout the opened sprinklers.

3.3.206.4.6 * Gridded Sprinkler System.

A sprinkler system in which parallel cross mains are connected by multiple branch lines, causing anoperating sprinkler to receive water from both ends of its branch line while other branch lines help transferwater between cross mains.

3.3.206.4.7 * Looped Sprinkler System.

A sprinkler system in which multiple cross mains are tied together so as to provide more than one path forwater to flow to an operating sprinkler and branch lines are not tied together.

3.3.206.4.8 Multicycle System.

A type of sprinkler system capable of repeated on–off flow cycles in response to heat.

3.3.206.4.9 Pipe Schedule System.

A sprinkler system in which the pipe sizing is selected from a schedule that is determined by theoccupancy classification and in which a given number of sprinklers are allowed to be supplied from specificsizes of pipe.


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3.3.206.4.10 * Preaction Sprinkler System.

A sprinkler system employing automatic sprinklers that are attached to a piping system that contains airthat might or might not be under pressure, with a supplemental detection system installed in the sameareas as the sprinklers.

3.3.206.4.11 Wet Pipe Sprinkler System.

A sprinkler system employing automatic sprinklers attached to a piping system containing water andconnected to a water supply so that water discharges immediately from sprinklers opened by heat from afire.


This comment is to move the definitions for a sprinkler system and the various system types to Section 3.3.207. As it is currently entered in the First draft Report, the definitions for a sprinkler system and for the various types of sprinkler system are sandwiched in between the sections for the types of sprinkler by installation orientation and the sprinkler system types. This location is obscure. It is not intuitive to look for the definition of a wet pipe system immediately before the definition of a CMDA sprinkler. The systems (types) should have their section.

Related Item

FR-866




Street Address:

City:

State:

Zip:

Submittal Date: Mon May 08 21:12:58 EDT 2017

Committee Statement

CommitteeAction:

Rejected but see related SR


Statement: As it is currently entered in the First draft Report, the definitions for a sprinkler system and for thevarious types of sprinkler system are sandwiched in between the sections for the types of sprinklerby installation orientation and the sprinkler system types. This location is obscure. It is not intuitive tolook for the definition of a wet pipe system immediately before the definition of a CMDA sprinkler.The systems (types) should have their section. Associated annex material is also moved.

Circulating Closed loops have been removed from NFPA 13. This language no longer applies to newinstallations.

New sub-definitions being added to Dry Pipe Sprinkler System. A PI was submitted to address lowdifferential dry pipe valves, defining it to be where the air/nitrogen to water ratio is greater than 1 in6. Debate was had during the first draft meeting on to the accuracy of this. Per discussion at theNFSA’s Engineering and Standards committee, it was noted that the issue is between differential drypipe valves and mechanical valves, where water columns adversely affect differential type dry pipevalves of any ratio. This is not an issue with mechanical type dry pipe valves. Definitions are neededto clarify the distinction between the two types.


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Public Comment No. 63-NFPA 13-2017 [ Section No. 3.3.206.4.1 ]

3.3.206.4.1 Antifreeze Sprinkler System.

A wet pipe system using automatic sprinklers that contains a liquid solution to prevent freezing of thesystem, intended to discharge the solution upon sprinkler operation, followed immediately by water from awater supply .


Phrases starting with INTENDED are explanatory and do not belong in a definition. Guidance like “followed immediately by water” not only is explanatory but also imply a requirement which does not belong in a definition.Where is the value or need in restricting an antifreeze system to being followed by water when it can be acceptable regardless of the amount of time required for said water to be discharged? What impact on system performance is provided by this requirement of water being discharged in the distant future after initial activation? The committee substantiation for rejection was not a valid reason. Clear text when it is inappropriate and/or in the wrong location is not a valid reason although I do agree with the committee statement that the original text “does NOT contribute to improve the Code”.

Related Item

PI-111




Street Address:

City:

State:

Zip:

Submittal Date: Thu May 04 17:43:18 EDT 2017

Committee Statement

CommitteeAction:

Rejected

Resolution: The existing language is clear. Sprinkler systems are intended to use water as anextinguishing agent.


34 of 518 10/27/2017, 7:12 AM


3.3.206.4.2 Circulating Closed-Loop Sprinkler System.

A wet pipe sprinkler system having non–fire protection connections to automatic sprinkler systems in aclosed-loop piping arrangement for the purpose of utilizing sprinkler piping to conduct water for heating orcooling, where water is not removed or used from the system but only circulated through the piping system.


Circulating Closed loops have been removed from NFPA 13. This language no longer applies to new installations.

Related Item

PI-48




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:







35 of 518 10/27/2017, 7:12 AM

Public Comment No. 129-NFPA 13-2017 [ New Section after 3.3.206.4.5 ]

3.3.206.4.5.1 Differential Dry Pipe Valve

The valve is held in the closed position by the system gas pressure exposed to the larger surface area onthe air/nitrogen side of the clapper where it is at least 5 times that of the surface area on the water supplyside.


A PI was submitted to address low differential dry pipe valves, defining it to be where the air/nitrogen to water ratio is greater than 1 in 6. Debate was had during the first draft meeting on to the accuracy of this. Per discussion at the NFSA’s Engineering and Standards committee, it was noted that the issue is between differential dry pipe valves and mechanical valves, where water columns adversely affect differential type dry pipe valves of any ratio. This is not an issue with mechanical type dry pipe valves. Definitions are needed to clarify the distinction between the two types.

Related Item

CI-727





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:







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37 of 518 10/27/2017, 7:12 AM


3.3.206.4.5.2 Mechanical Dry Pipe Valve

Uses a series of mechanical devices such as levers, springs, diaphragms, and latches to hold the valve inthe closed position with air/nitrogen pressure and without using the clapper surface areas to provide adifferential between air/nitrogen and water pressures.


A PI was submitted to address low differential dry pipe valves, defining it to be where the air/nitrogen to water ratio is greater than 1 in 6. Debate was had during the first draft meeting on to the accuracy of this. Per discussion at the NFSA’s Engineering and Standards committee, it was noted that the issue is between differential dry pipe valves and mechanical valves, where water columns adversely affect differential type dry pipe valves of any ratio. This is not an issue with mechanical type dry pipe valves. Definitions are needed to clarify the distinction between the two types.

Related Item

CI-727





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:







38 of 518 10/27/2017, 7:12 AM


39 of 518 10/27/2017, 7:12 AM


Differential Dry Pipe Valve

A valve that is closed by a larger clapper than the waterway, creating a differential or ratio of size.

Mechanically Latched Dry Pipe Valve

A dry valve that is mechanically latched closed.


This is to better clarify PI-267 and CI-727.



Public Comment No. 202-NFPA 13-2017 [Section No. 8.2.5.4.2]

Related Item

PI-267, CI-727


Submitter Full Name: Daniel Wake

Organization: Victaulic Company of America

Street Address:

City:

State:

Zip:


Committee Statement


Resolution: See action and statement on comment 129 & 130.


40 of 518 10/27/2017, 7:12 AM


3.3.206.5 Needs a Title. Sprinkler Types. The following sprinklers are defined according to design andperformance characterstics.

3.3.206.5.1 * Control Mode Density/Area (CMDA) Sprinkler.

A type of spray sprinkler intended to provide fire control in storage applications using the designdensity/area criteria described in this standard.

3.3.206.5.2 * Control Mode Specific Application (CMSA) Sprinkler.

A type of spray sprinkler that is capable of producing characteristic large water droplets and that is listed forits capability to provide fire control of specific high-challenge fire hazards.

3.3.206.5.3 Corrosion-Resistant Sprinkler.

A sprinkler fabricated with corrosion-resistant material, or with special coatings or platings, to be used in anatmosphere that would normally corrode sprinklers.

3.3.206.5.4 * Dry Sprinkler.

A sprinkler secured in an extension nipple that has a seal at the inlet end to prevent water from entering thenipple until the sprinkler operates.

3.3.206.5.5 * Early Suppression Fast-Response (ESFR) Sprinkler.

A type of fast-response sprinkler that has a thermal element with an RTI of 50 (meters-seconds)1⁄2 or less

and is listed for its capability to provide fire suppression of specific high-challenge fire hazards.

3.3.206.5.6 Extended Coverage Sprinkler.

A type of spray sprinkler with maximum coverage areas as specified in Sections 11.2 and 11.3 of thisstandard.

3.3.206.5.7 Institutional Sprinkler.

A sprinkler specially designed for resistance to load-bearing purposes and with components not readilyconverted for use as weapons.

3.3.206.5.8 Intermediate Level Sprinkler/Rack Storage Sprinkler.

A sprinkler equipped with integral shields to protect its operating elements from the discharge of sprinklersinstalled at higher elevations.

3.3.206.5.9 Nozzles.

A device for use in applications requiring special water discharge patterns, directional spray, or otherunusual discharge characteristics.

3.3.206.5.10 Old-Style/Conventional Sprinkler.

A sprinkler that directs from 40 percent to 60 percent of the total water initially in a downward direction andthat is designed to be installed with the deflector either upright or pendent.

3.3.206.5.11 Open Sprinkler.

A sprinkler that does not have actuators or heat-responsive elements.

3.3.206.5.12 Ornamental/Decorative Sprinkler.

A sprinkler that has been painted or plated by the manufacturer.

3.3.206.5.13 Pilot Line Detector.

A standard spray sprinkler or thermostatic fixed-temperature release device used as a detector topneumatically or hydraulically release the main valve, controlling the flow of water into a fire protectionsystem.


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3.3.206.5.14 * Quick-Response (QR) Sprinkler.

A type of spray sprinkler that has a thermal element with an RTI of 50 (meter-seconds)1⁄2 or less and is

listed as a quick-response sprinkler for its intended use.

3.3.206.5.15 * Quick-Response Early Suppression (QRES) Sprinkler.

A type of quick-response sprinkler that has a thermal element with an RTI of 50 (meter-seconds)1⁄2 or less

and is listed for its capability to provide fire suppression of specific fire hazards.

3.3.206.5.16 Quick-Response Extended Coverage Sprinkler.

A type of quick-response sprinkler that has a thermal element with an RTI of 50 (meter-seconds)1⁄2 or less

and complies with the extended protection areas defined in Chapter 8.

3.3.206.5.17 Residential Sprinkler.

A type of fast-response sprinkler having a thermal element with an RTI of 50 (meters-seconds)1⁄2 or less

that has been specifically investigated for its ability to enhance survivability in the room of fire origin, andthat is listed for use in the protection of dwelling units.

3.3.206.5.18 Special Sprinkler.

A sprinkler that has been tested and listed as prescribed in 15.2.

3.3.206.5.19 Spray Sprinkler.

A type of sprinkler listed for its capability to provide fire control for a wide range of fire hazards.

3.3.206.5.20 Standard Spray Sprinkler.

A spray sprinkler with maximum coverage areas as specified in Sections 10.2 and 10.3 of this standard.


In the First Draft Report, Section 3.3.206.5 is entitled "Needs a Title". The title and the corresponding text offered here is borrowed right from the 2016 edition of the standard for the same definitions.

Related Item

FR-866




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:


Resolution: SR-409-NFPA 13-2017 By adding the word "or" all definitions can be based on design orperformance.

Statement: In the First Draft Report, Section 3.3.206.5 is entitled "Needs a Title". The title and thecorresponding text offered here is borrowed right from the 2016 edition of the standard for thesame definitions.


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3.3.206.5.4 * Dry Sprinkler.

A sprinkler secured in an extension nipple extension (barrel) that has a seal at the inlet end to preventwater from entering the nipple the barrel until the sprinkler operates.


During the Technical Committee's First Draft Meeting is was decided to delete the word "nipple" when referring to the extension (barrel) of a dry sprinkler, to remove the suggestion that the barrel of a dry sprinkler is a piece of pipe. The Committee Comment for items such as PI-275 and PI-280 refer to the action taken for PI-269 (ie. this definition), but there the First draft report does not indicate any changes to the text. For items such as PI-271 and PI-272 it was decided to retain the word "barrel", so this word was edited into this proposed revision to the dry sprinkler definition. This word can still be used, despite the fact that some dry sprinklers have flexible extensions.

Related Item

PI-269




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:


Resolution: SR-409-NFPA 13-2017 By adding the word "or" all definitions can be based on design orperformance.

Statement: In the First Draft Report, Section 3.3.206.5 is entitled "Needs a Title". The title and thecorresponding text offered here is borrowed right from the 2016 edition of the standard for thesame definitions.


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3.3.207 Sprinkler System.

See 3.3.206.4 . Attached file:



Sprinkler_Systems.docx Sprinkler Systems


As it is currently entered in the First draft Report, the definitions for a sprinkler system and for the various types of sprinkler system are sandwiched in between the sections for the types of sprinkler by installation orientation and the sprinkler system types. This location is obscure. It is not intuitive to look for the definition of a wet pipe system immediately before the definition of a CMDA sprinkler. The systems (types) should have their section.

Related Item

FR-866




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:







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3.3.207* Sprinkler System. A system that consists of an integrated network of piping designed in accordance with fire protection engineering standards that includes a water supply source, a water control valve, a waterflow alarm, and a drain. The portion of the sprinkler system above ground is a network of specifically sized or hydraulically designed piping installed in a building, structure, or area, generally overhead, and to which sprinklers are attached in a systematic pattern. The system is commonly activated by heat from a fire and discharges water over the fire area. 3.3.207.1 Antifreeze Sprinkler System. A wet pipe system using automatic sprinklers that contains a liquid solution to prevent freezing of the system, intended to discharge the solution upon sprinkler operation, followed immediately by water from a water supply. 3.3.207.2 Combined Dry Pipe–Preaction Sprinkler System. A sprinkler system employing automatic sprinklers attached to a piping system containing air under pressure with a supplemental detection system installed in the same areas as the sprinklers. Operation of the detection system actuates tripping devices that open dry pipe valves simultaneously and without loss of air pressure in the system. The detection system also serves as an automatic fire alarm system. 3.3.207.3 Deluge Sprinkler System. A sprinkler system employing open sprinklers or nozzles that are attached to a piping system that is connected to a water supply through a valve that is opened by the operation of a detection system installed in the same areas as the sprinklers or the nozzles. When this valve opens, water flows into the piping system and discharges from all sprinklers or nozzles attached thereto. 3.3.207.4 Dry Pipe Sprinkler System. A sprinkler system employing automatic sprinklers that are attached to a piping system containing air or nitrogen under pressure, the release of which (as from the opening of a sprinkler) permits the water pressure to open a valve known as a dry pipe valve, and the water then flows into the piping system and out the opened sprinklers. 3.3.207.5* Gridded Sprinkler System. A sprinkler system in which parallel cross mains are connected by multiple branch lines, causing an operating sprinkler to receive water from both ends of its branch line while other branch lines help transfer water between cross mains. 3.3.207.6* Looped Sprinkler System. A sprinkler system in which multiple cross mains are tied together so as to provide more than one path for water to flow to an operating sprinkler and branch lines are not tied together. 3.3.207.7 Multicycle System. A type of sprinkler system capable of repeated on–off flow cycles in response to heat. 3.3.207.8 Pipe Schedule System. A sprinkler system in which the pipe sizing is selected from a schedule that is determined by the occupancy classification and in which a given number of sprinklers are allowed to be supplied from specific sizes of pipe. 3.3.207.9* Preaction Sprinkler System. A sprinkler system employing automatic sprinklers that are attached to a piping system that contains air that might or might not be under pressure, with a supplemental detection system installed in the same areas as the sprinklers. 3.3.207.9 Wet Pipe Sprinkler System. A sprinkler system employing automatic sprinklers attached to a piping system containing water and connected to a water supply so that water discharges immediately from sprinklers opened by heat from a fire.

Public Comment No. 327-NFPA 13-2017 [ New Section after 4.1.2.2 ]

4.1.3* Temporary Protection During Construction, Alteration or Demolition.

Temporary fire sprinkler protection during construction, alteration or demolition shall comply with NFPA241.

A.4.1.3 During construction, alternation and demolition, there are many hazardous conditions, such ascutting, welding, grinding and combustible or hazardous product storage that can be made safer byinstalling a temporary fire sprinkler system. Given that such protection will be supplemental to any otherprotection that would be required, NFPA 241 permits temporary fire sprinkler protection when approved bythe AHJ.


In discussing rejection of PI 609, the committee suggested that the issue of temporary sprinklers during construction was better suited for inclusion in NFPA 241. That suggestion was pursued and resulted in an addition of a new section on temporary sprinkler protection in the next edition of NFPA 241. It is appropriate for NFPA 13 to include a reference to NFPA 241 since sprinkler contractors won't ordinarily be familiar with that standard.

For reference, the NFPA 241 text is as follows:

7.9 Temporary Protection During Construction, Alteration or Demolition.During construction, alteration or demolition, the use of temporary fire sprinkler protection approved by the AHJ shall be permitted as supplemental protection.

A.7.9 During construction, alternation and demolition, there are many hazardous conditions, such as cutting, welding, grinding and combustible or hazardous product storage that can be made safer by installing a temporary fire sprinkler system. Given that such protection will besupplemental to any other protection that would be required, there is no harm in allowing this additional safety feature on a temporary basis if the design basis and installation is considered acceptable by the AHJ.

Related Item

PI 609


Submitter Full Name: Jeffrey Shapiro

Organization: International Code Consultants

Affilliation: Self

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: This language belongs in NFPA 241, building code, or fire code, NFPA 13 is an installationstandard.


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Public Comment No. 21-NFPA 13-2017 [ Section No. 4.2 ]

4.2* Owner’s Certificate.

The owner(s) of a building or structure where the fire sprinkler system is going to be installed or theirauthorized agent shall provide the sprinkler system installer with the following information prior to the layoutand detailing of the fire sprinkler system [see Figure A.4.6(b)]:

(1) Intended use of the building including the materials within the building and the maximum height of anystorage

(2) A preliminary plan of the building or structure along with the design concepts necessary to perform thelayout and detail for the fire sprinkler system

(3)

4.2.1 Certificate Provided

The Owner's Certificate shall be considered as a component of the fire sprinkler plans. The Owner'sCertificate shall be provided with all plans submitted to the AHJ for approval that are related to a firesprinkler system.


The purpose of the owner's certificate is to define the intended use of the building a fire sprinkler system is being installed in, so the engineer can develop a system that meets the needs of the owner. The problem is, this certificate never accompanies the set of plans that are provided to the AHJ for approval. How can we review a set of plans to ensure that the system is being installed correctly if we don't know what it will be used for? This document should be considered part of the plans and always accompany them when they are submitted to the AHJ for approval.

Related Item

PI


Submitter Full Name: Ryan Wyse

Organization: Hebron Fire Department

Street Address:

City:

State:

Zip:

Submittal Date: Fri Mar 24 15:25:06 EDT 2017

Committee Statement

CommitteeAction:

Rejected

Resolution: The requirement for the submission of an owner's certificate has been addressed in the outline ofitems required in the working plans list found in Chapter 27.

* Any special knowledge of the water supply, including known environmental conditions that might beresponsible for corrosion, including microbiologically influenced corrosion (MIC)


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Public Comment No. 310-NFPA 13-2017 [ Sections 4.3.1.5.1, 4.3.1.5.2 ]

Sections 4.3.1.5.1, 4.3.1.5.2

4.3.1.5.1

For storage of Class I through Class IV 12 ft (3.7 m) or less in height that does not meet the definition ofMiscellaneous Storage that is on solid shelf racks, in-rack sprinklers shall be provided in accordance with16 25 .6. 1.6 , and ceiling sprinkler protection shall be provided in accordance with Chapter13 13 accordance with this chapter, for the relative occupancy hazard criteria .

4.3.1.5.2

For storage of Group A Plastics 5 ft (1.5 m) or less in height that does not meet the definition ofMiscellaneous Storage that is on solid shelf racks, in-rack sprinklers shall be provided in accordance with17 25 .6. 1.5 , and ceiling sprinkler protection shall be provided in accordance with Chapter 13 with thischapter, for the relative occupancy hazard criteria .


In the First Draft Report the references are from the 2016 edition of the NFPA 13. These matters need to be revised to match the new chapter structure for the standard.

Related Item

FR-911




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: In the First Draft Report the references are from the 2016 edition of the NFPA 13. These mattersneed to be revised to match the new chapter structure for the standard.


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4.3.4* Ordinary Hazard (Group 2).

The following shall be protected with ordinary hazard group 2 occupancy criteria in this standard:

(1) Spaces with moderate to high quantity and combustibility of contents

(2) Stockpiles of contents with moderate to high combustibility that do not exceed 12 ft (3.7 m)

(3) Miscellaneous or low-piled storage of solid-piled, palletized, bin box, shelf, rack, and back-to-back shelfstorage of Class II commodities more than 10 ft (3.0 m) and not exceeding 12 ft (3.7 m)

(4) Miscellaneous or low-piled storage of solid-piled, palletized, bin box, shelf, rack, and back-to-back shelfstorage of Class III commodities not exceeding 12 ft (3.7 m)

(5) Miscellaneous or low-piled storage of solid-piled, palletized, bin box, shelf, rack, and back-to-back shelfstorage of Class IV commodities not exceeding 10 ft (3.0 m)

(6) Miscellaneous or low-piled storage of solid-piled, palletized, bin box, and shelf storage of Class IVcommodities more than 10 ft (3.0 m) and not exceeding 12 ft (3.7 m) and a maximum ceiling height of32 ft (9.8 m)

(7) Miscellaneous or low-piled rack storage of Class IV commodities more than 10 ft (3.0 m) and notexceeding 12 ft (3.7 m) and a maximum ceiling height of 32 ft (9.8 m) with the use of 1 level of in-racksprinklers

(8) Miscellaneous or low-piled storage of solid-piled, palletized, bin box, shelf, rack, and back-to-backshelf storage of Group A commodities not exceeding 5 ft (1.5 m)

(9) Miscellaneous storage of rack storage of Group A commodities more than 10 ft (3.0 m) and notexceeding 12 ft (3.7 m) and a maximum ceiling height of 32 ft (9.8 m) with the use of 1 level of in-racksprinklers

(10) Miscellaneous storage of rack storage of exposed expanded Group A commodities more than 5 ft (1.5m) and not exceeding 10 ft (3.0 m) and a maximum ceiling height of 20 ft (5.1 m) with the use of 1 levelof in-rack sprinklers

(11) Miscellaneous tire storage stored on floor or in rack either on tread or on side not exceeding 5 ft (1.5m)

(12) Miscellaneous tire storage stored on a fixed single-row rack either on tread or on side more than 5 ft(1.5 m) and not exceeding 12 ft (3.7 m) and a maximum ceiling height of 32 ft (9.8 m) with the use of 1level of in-rack sprinklers

(13) Miscellaneous store of medium weight and heavyweight rolled paper stored on end not exceeding 10 ft(3.0 m) and a maximum ceiling height of 30 ft (9.1 m)


At the First Draft Meeting, for PI-513, the Technical Committee to agreed provide another option for the protection of Class IV commodities stored on racks to a maximum height of 12 ft. Since an OH2 design with 1 level of in-rack sprinklers is adequate for Miscellaneous Storage of Group A plastic commodities and rubber tires on racks to 12 ft, itwas agreed that it should be equally acceptable for the storage of Class IV products. However, in the First Draft Report, this changes seems to have been missed during the rewritingeditting effort, so the addition should be inserted at this stage.

Related Item

PI-513

FR-860



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Street Address:

City:

State:

Zip:


Committee Statement



Statement: The list items have been deleted because they are redundant to what is in Table 4.3.1.7.1.


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4.5.2

The floor area occupied by mezzanines shall comply with 4.5.2.1 or 4.5.2.2 or 4.5.2.3

4.5.2.1 In a building with only one system the floor area occupied by mezzanines shall not be included inthe area limits of 4.5.1 .

4.5.2.2 In a building with more than one system if a mezzanine located is entirely within a single systemboundary the floor area occupied by mezzanines shall not be included in the area limits of 4.5.1.

4.5.2.3 In a building with more than one system and any portion of the mezzanine floor area which islocated outside of the system boundary shall be additive to the system total area from which it is suppliedand the total system area shall meet the limits of 4.5.1


Without the acceptance of this proposal in a large multi-system building it is possible to have a single riser supplying a system of up to 52,000 sqft and also supply a mezzanine of unlimited size. It is not the intent to allow a single system riser to control an unlimited area.

This was submitted as a public proposal and resolved stating that this is addressed in the annex. This issue is not addressed in the annex. For example a single riser in a 1,000,000 sqft building may supply a 52,000 sqft roof system and also a 300,000 sqft mezzanine. I don't believe that it is the intend of the section to allow 352,000 sqft to be supplied by a single riser.

Related Item

Public Input No. 176-NFPA 13-2016


Submitter Full Name: John Deutsch

Organization: Shambaugh & Son

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: Without the acceptance of this proposal in a large multi-system building it is possible to have asingle riser supplying a system of up to 52,000 sqft and also supply a mezzanine of unlimited size.It is not the intent to allow a single system riser to control an unlimited area.

This was submitted as a public proposal and resolved stating that this is addressed in the annex.This issue is not addressed in the annex. For example a single riser in a 1,000,000 sqft buildingmay supply a 52,000 sqft roof system and also a 300,000 sqft mezzanine. I don't believe that it isthe intend of the section to allow 352,000 sqft to be supplied by a single riser.


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4.5.4

The area protected by a single in-rack system includes all of the floor area occupied by the racks,including aisles, regardless of the number of levels of in-rack sprinklers.

4.5.4.1

Multiple buildings attached by canopies, covered breezeways, common roofs, or a common wall(s) shall bepermitted to be supplied by a single fire sprinkler riser.

4.5.4.2

The

area protected by a single in-rack system shall include all of the floor area occupied by the racks, includingaisles, regardless of the number of levels of in-rack sprinklers.

4.5.4.2.1

Multiple buildings attached by canopies, covered breezeways, common roofs, or a common wall(s) shall bepermitted to be supplied by a single fire sprinkler riser.

4.5.4.3

The maximum system size shall comply with 4.5.1.


In the First Draft Report, the text of 4.5.4 and 4.5.4.1 is duplicated in 4.5.4.2 and 4.5.4.2.1. The redundant text should be deleted.

Related Item

FR-911




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: In the First Draft Report, the text of 4.5.4 and 4.5.4.1 is duplicated in 4.5.4.2 and 4.5.4.2.1. Theredundant text should be deleted. Renumber remainder of Chapter accordingly.


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Move this entire section ( 4.6 ) to a new Chapter 27 and renumber proposed Chapter 27 and all remainingchapters.

Chapter 27 Plans and Calculations

27.1 * Working Plans.

4 27 .6 1 .1*

Working plans shall be submitted for approval to the authority having jurisdiction before any equipment isinstalled or remodeled.

4 27 .6 1 .1.1

Working plan submittals shall include the following:

(1) Working plans of the system(s), per 4.6.3

(2) Hydraulic calculations where systems are required to be calculated

(3) Data sheets for the system components where required by the AHJ

(4)

4 27 .6 1 .1.2

Submittals shall be permitted to be in electronic format when approved by the authority having jurisdiction.

4 27 .6 1 .1.3

A copy of the approved plans shall be given to the owner or owner’s representative.

4 27 .6 1 .2

Deviation from approved plans shall require permission of the authority having jurisdiction.

* Signed owner’s certificate


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4 27 .6 1 .3


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Working plans shall be drawn to an indicated scale, on sheets of uniform size, with a plan of each floor, andshall show those items from the following list that pertain to the design of the system:

(1) Name of owner and occupant.

(2) Location, including street address.

(3) Point of compass.

(4) Full height cross section or schematic diagram, including structural member information if required forclarity and including ceiling construction and method of protection for nonmetallic piping.

(5) Ceiling/roof heights and slopes not shown in the full height cross section.

(6) Location of partitions.

(7) Location of fire walls.

(8) Occupancy class of each area or room.

(9) Location and size of concealed spaces, closets, attics, and bathrooms.

(10) Any small enclosures in which no sprinklers are to be installed.

(11) Size of city main in street and whether dead end or circulating; if dead end, direction and distance tonearest circulating main; and city main test results and system elevation relative to test hydrant.

(12) Other sources of water supply, with pressure or elevation.

(13) Make, type, model, and nominal K-factor of sprinklers, including sprinkler identification number.

(14) Temperature rating and location of high-temperature sprinklers.

(15) Total area protected by each system on each floor.

(16) Number of sprinklers on each riser per floor.

(17) Total number of sprinklers on each dry pipe system, preaction system, combined dry pipe–preactionsystem, or deluge system.

(18) Approximate capacity in gallons of each dry pipe system.

(19) Pipe type and schedule of wall thickness.

(20) Nominal pipe size and cutting lengths of pipe (or center-to-center dimensions). Where typical branchlines prevail, it shall be necessary to size only one typical line.

(21) Location and size of riser nipples.

(22) Type of fittings and joints and location of all welds and bends. The contractor shall specify on drawingany sections to be shop welded and the type of fittings or formations to be used.

(23) Type and locations of hangers, sleeves, braces, and methods of securing sprinklers when applicable.

(24) All control valves, check valves, drain pipes, and test connections.

(25) Size, location, and valve and piping arrangement for means to forward flow test at system demand.

(26) Make, type, model, and size of alarm or dry pipe valve.

(27) Make, type, model, and size of preaction or deluge valve.

(28) Kind and location of alarm bells.

(29) Size and location of standpipe risers, hose outlets, hand hose, monitor nozzles, and related equipment.

(30) Private fire service main sizes, lengths, locations, weights, materials, point of connection to city main;the sizes, types and locations of valves, valve indicators, regulators, meters, and valve pits; and thedepth that the top of the pipe is laid below grade.

(31) Piping provisions for flushing.

(32) Where the equipment is to be installed as an addition to an existing system, enough of the existingsystem indicated on the plans to make all conditions clear.

(33) For hydraulically designed systems, the information on the hydraulic data nameplate.

(34) A graphic representation of the scale used on all plans.


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(35) Name, address, and phone number(s) of contractor.

(36) Hydraulic reference points shown on the plan that correspond with comparable reference points on thehydraulic calculation sheets.

(37) The minimum rate of water application (density or flow or discharge pressure), the design area of waterapplication, in-rack sprinkler demand, and the water required for hose streams both inside and outside.

(38) The total quantity of water and the pressure required noted at a common reference point for eachsystem.

(39) Relative elevations of sprinklers, junction points, and supply or reference points.

(40) If room design method is used, all unprotected wall openings throughout the floor protected.

(41) Calculation of loads for sizing and details of sway bracing.

(42) Zones of influence used in calculations for seismic bracing indicated on plans.

(43) The setting for pressure-reducing valves.

(44) Information about backflow preventers (manufacturer, size, type).

(45) Information about listed antifreeze solution used (type and amount).

(46) Size and location of hydrants showing size and number of outlets and if outlets are to be equipped withindependent gate valves. Whether hose houses and equipment are to be provided, and by whom, shallbe indicated. Static and residual hydrants that were used in flow tests shall be shown.

(47) Utility plans and/or plumbing plans necessary to show connection from water supply to fire sprinklersystem.

(48) Size, location, and piping arrangement of fire department connections.


(50) Edition year of NFPA 13 to which the sprinkler system is designed.

4 27 .6 1 .4

A signed copy of the owner’s certificate and the working plan submittal shall include the manufacturer’sinstallation instructions for any specially listed equipment, including descriptions, applications, andlimitations for any sprinklers, devices, piping, or fittings.

4 27 .6 1 .5* Working Plans for Automatic Sprinkler Systems with Non–Fire Protection Connections.

4 27 .6 1 .5.1

Special symbols shall be used and explained for auxiliary piping, pumps, heat exchangers, valves,strainers, and the like, clearly distinguishing these devices and piping runs from those of the sprinklersystem.

4 27 .6 1 .5.2

Model number, type, and manufacturer’s name shall be identified for each piece of auxiliary equipment.


The details regarding working plans are far too specific to be in a "General Requirements" chapter. They require the knowledge of many pieces of information that have not been determined by the user when they get to Chapter 4. This forces the user to circle back to Chapter 4 after reading other chapters in the book.

The rules for plans should not be separated from the rules for hydraulic calculation. Those rules were proposed for a different chapter, and I will be proposing to bring them together in the new Chapter 27. The rules for information that needs to be provided on working plans cannot be separated from hydraulic calculations. Just look at how much information in the proposed section 4.6 needs to come from the hydraulic calculations. They should be together in a chapter after the design approaches have been determined by the user.



Public Comment No. 68-NFPA 13-2017 [Sections 19.6, 19.7, 19.8, 19.9]


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Related Item

FR-911 Rewrite of Chapter 4


Submitter Full Name: Kenneth Isman

Organization: University of Maryland

Street Address:

City:

State:

Zip:

Submittal Date: Fri May 05 15:33:29 EDT 2017

Committee Statement

CommitteeAction:



Statement: The details regarding working plans are far too specific to be in a "General Requirements" chapter.They require the knowledge of many pieces of information that have not been determined by theuser when they get to Chapter 4. This forces the user to circle back to Chapter 4 after reading otherchapters in the book.

The rules for plans should not be separated from the rules for hydraulic calculation. Those ruleswere proposed for a different chapter, and I will be proposing to bring them together in the newChapter 27. The rules for information that needs to be provided on working plans cannot beseparated from hydraulic calculations. Just look at how much information in the proposed section4.6 needs to come from the hydraulic calculations. They should be together in a chapter after thedesign approaches have been determined by the user.

Some of the revisions made to this section are redundant and according to my notes they were notaccepted by the TC at the 1st Draft Meeting:

- The new Item 25 was edited to call for the details of the backflow preventer and provide betterclarity. As written in the First Draft Report, it implies that every system requires a forward flow testconnection, whereas it is only called for when there is a backflow preventer installed.

- Item 44 should be deleted, because with the new Item 25 it became redundant.

- Item 47 should be deleted, because the information is already called for in Item 30. Also, byreferring to utility and plumbing plans, it suggests that the underground water service is not part ofthe sprinkler system.

- Item 49 should be deleted, because the information is already called for in the new Item 5.


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4.6.3


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(25) Size, location, and valve and piping arrangement for means to forward flow test at system demand,where a backflow device is installed on the system .











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(44) Information about backflow preventers (manufacturer, size, type).








Per Larry Keeping’s comment on the ballot, the new Sentence 25 implies that every system requires a forward flow test connection, whereas it is only called for when there is a backflow preventer installed. The new Sentence 47 is not only redundant to Sentence 30, but by referring to utility and plumbing plans it suggests that the underground water service is not part of the sprinkler system.

Related Item

FR-761





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:




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4.6.3


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(25) Size Make , location type , and valve and piping arrangement for model, and size of backflow prenterand means to forward flow test at system demand.











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(44) Information about

backflow preventers (manufacturer, size, type).








Some of the revisions made to this section are redundant and according to my notes they were not accepted by the TC at the 1st Draft Meeting:

- The new Item 25 was edited to call for the details of the backflow preventer and provide better clarity. As written in the First Draft Report, it implies that every system requires a forward flow test connection, whereas it is only called for when there is a backflow preventer installed. - Item 44 should be deleted, because with the new Item 25 it became redundant.- Item 47 should be deleted, because the information is already called for in Item 30. Also, by referring to utility and plumbing plans, it suggests that the underground water service is not part of the sprinkler system.- Item 49 should be deleted, because the information is already called for in the new Item 5.

Related Item

FR-761




Street Address:

City:

State:

Zip:


Committee Statement


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CommitteeAction:











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Public Comment No. 54-NFPA 13-2017 [ New Section after 4.10 ]

4.11 Noncombustible materials and limited combustible materials

4.11.1* Noncombustible material [NFPA 5000, 7.1.4.1]

4.11.1.1.A material that complies with any of the following shall be considered a noncombustible material:

(1)* The material, in the form it is used, and under the conditions anticipated, will not ignite, burn, supportcombustion, or release flammable vapors when subjected to fire or heat.

(2) The material is reported as passing ASTM E136, Standard Test Method for Behavior of Materials in aVertical Tube Furnace at 740 degrees C.

(3) The material is reported as complying with the pass/fail criteria of ASTM E136 when tested inaccordance with the test method and procedure of ASTM E2652, Standard Test Method for Behavior ofMaterials in a Tube Furnace with a Cone-Shaped Airflow Stabilizer at 750 degrees C.

4.11.1.2 Where the term limited combustible is used in this standard, it shall also include the termnoncombustible.

4.11.2* Limited combustible material [NFPA 5000, 7.1.4.2]

4.11.2.1 A material shall be considered a limited combustible material where both of the following conditionsof 4.11.2.1 (1) and 4.11.2.1 (2), and the conditions of either 4.11.2.1.2 or 4.11.2.3 are met:

(1) The material does not comply with the requirements of a noncombustible material in accordance with5.1.1.

(2) The material, in the form in which it is used, exhibits a potential heat value not exceeding 3500 BTU/lb(8141 kJ/kg), when tested in accordance with NFPA 259, Standard Test Method for Potential Heat ofBuilding Materials.

4.11.2.2 The material shall have a structural base of noncombustible material with a surfacing not exceedinga thickness of 1/8 in. (3.2 mm) where the surfacing exhibits a flame spread index not greater than 50 whentested in accordance with ASTM E84, Standard Test Method for Surface Burning Characteristics of BuildingMaterials, or of ANSI/UL 723, Standard for Test for Surface Burning Characteristics of Building Materials.

4.11.2.3 The material shall be composed of materials that in the form and thickness used, neither exhibit aflame spread index greater than 25 nor evidence of continued progressive combustion when tested inaccordance with ASTM E84 or ANSI/UL 723 and are of such composition that all surfaces that would beexposed by cutting through the material on any plane would neither exhibit a flame spread index greaterthan 25 nor exhibit evidence of continued progressive combustion when tested in accordance with ASTME84 or ANSI/UL 723.

4.11.2.4 Where the term limited combustible is used in this standard, it shall also include the termnoncombustible.

A4.11.1 The provisions of 4.11.1 do not require inherently noncombustible materials to be tested in order tobe classified as noncombustible materials. [NFPA 5000]

A4.11.1.1 (1) Examples of such materials include steel, concrete, masonry and glass. [NFPA 5000]

A4.11.2 Material subject to increase in combustibility or flame spread index beyond the limits hereinestablished through the effects of age, moisture, or other atmospheric condition is considered combustible(See NFPA 259 and NFPA 220). [NFPA 5000 A.7.1.4.2]

(This requires adding ASTM E2652 into section on referenced standards)


This is a place to include the requirements for limited combustible materials and noncombustible materials in a way consistent with most NFPA documents. This is a companion to deleting the definitions from Chapter 3, where they are both inconsistent with those in other documents and placed in a section that is not intended to be enforced.



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Related Item

Public input 12




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected



69 of 518 10/27/2017, 7:12 AM


5.1.5.2

Water supplies and environmental conditions shall be evaluated for conditions that contribute to unusualcorrosive properties. Where conditions are found that contribute to unusual corrosive properties, theowner(s) shall notify the sprinkler system installer and a plan shall be developed to treat the system usingone of the following methods:

(1) Install a water pipe that is corrosion resistant

(2) Treat all water that enters the system using an approved and listed corrosion inhibitor.

(3) Implement an approved plan for monitoring the interior conditions of the pipe at established intervalsand locations

(4) Install corrosion monitoring station and monitor at established intervals

(5) Fill dry-pipe or preaction systems with nitrogen as a supervisory gas to mitigate against corrosion.

(6) When using a generator, use an approved nitrogen generator.


The TC removed this section from the code, which removes all recommendations to treat the water with a corrosion inhibitor. NFPA 13 section 7.8.1 'Additives to the water supply intended for control of Microbiological or other corrosion shall be listed for use within fire sprinkler systems". UL and Huguenot Laboratories are in contract to produce a listed and approved inhibitor within the calendar year of 2017. Copies of the developed testing standard are being provided as verification of compliance that a listed inhibitor is forthcoming. Please return this section to the code now that a listing standard exists. A copy of the testing standard and contract between UL and Huguenot Laboratories are being provided as proof of compliance. Thank you.

Related Item

FR-919

PI-44-NFPA 13-2016

PI-35-NFPA 13-2016


Submitter Full Name: Tim O'Leary

Organization: Huguenot Laboratories

Affilliation: President and CEO

Street Address:

City:

State:

Zip:

Submittal Date: Fri Apr 07 08:53:10 EDT 2017

Committee Statement

CommitteeAction:




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Statement: The TC removed this section from the code, which removes all recommendations to treat the waterwith a corrosion inhibitor. NFPA 13 section 7.8.1 'Additives to the water supply intended for control ofMicrobiological or other corrosion shall be listed for use within fire sprinkler systems". UL andHuguenot Laboratories are in contract to produce a listed and approved inhibitor within the calendaryear of 2017. Copies of the developed testing standard are being provided as verification ofcompliance that a listed inhibitor is forthcoming. Please return this section to the code now that alisting standard exists. A copy of the testing standard and contract between UL and HuguenotLaboratories are being provided as proof of compliance. Thank you.


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5.1.8* Connection from Waterworks System.

5.1.8.1

The requirements of the public health authority having jurisdiction shall be determined and followed.

5.1.8.2

Where equipment is installed to guard against possible contamination of the public water system, suchequipment and devices shall be listed for fire protection service.

5.1.8.3

When a hydrant is installed between the public waterworks system and a fire pump, the hydrant shall beuniquely identified in a manner approved by the AHJ.


I have seen many private fire hydrants installed between a fire pump and the public water supply connection. The purpose of this hydrant is to be used as a water source by the fire department to supply the FDC in the event that a fire pump fails to operate. Should the fire pump be operating as normal, utilizing this hydrant will steal water from the fire pump, which will reduce the amount of water being supplied to the sprinkler system and other private fire hydrants. Additionally, since this hydrant is before the fire pump, the hydrant will only have municipal pressure and not which would have been received from the fire pump. We have 5 industrial buildings within our district.

Related Item

PI


Submitter Full Name: Ryan Wyse

Organization: Hebron Fire Department

Street Address:

City:

State:

Zip:

Submittal Date: Fri Mar 24 15:05:14 EDT 2017

Committee Statement

CommitteeAction:

Rejected

Resolution: This is not under the scope of NFPA 13 and should be directed to NFPA 24. The hydraulicconcern is already addressed elsewhere in the standard by the hose stream allowancecalculation.


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5.2.2.2

The volume and pressure of a public water supply shall be determined from waterflow test data or otherapproved methods.

5.2.2.2.1

Where a waterflow test is conducted, the volume and pressure available for use for a fire protectionsystem shall be determined in accordance with 5.2.2.2.1.1 . If knowledge of the water supply isunavailable, the volume and pressure shall be determined in accordance with 5.2.2.2.1.2 .

5.2.2.2.1.1 *

Water supply adjustments shall be based on knowledge of the water supply and engineering judgment,taking into account daily and seasonal fluctuations, not extreme conditions.

5.2.2.2.1.2 *

If knowledge of the water supply is unavailable, the following formula shall be used to determine volumeand pressure:

[5.2.2.2.1.2]

where:

P = pressure available from the water supply to use for a fire protection system that will be calculatedfor a given flow ( Q )

P R = residual pressure measured during the waterflow test while the flow Q R was discharging from

the water supply

P S = static pressure measured during the waterflow test

Q = flow that will be used to calculate the available pressure from the water supply

Q R = flow discharging from the water supply when PR was measured

P L = expected low static pressure at the location of the test results accounting for daily and seasonalfluctuations (not extreme conditions) obtained from the water utility

5.2.2.2.1.3

Where the water authority does not provide a value for P L , the value of P L shall be calculated from the

following formula:

[5.2.2.2.1.3]


The adjustment to a water flow test is unnecessary as many safety factors are already included throughout the standard for installation and design of sprinkler systems. NFPA 13 has not previously required a set safety margin specifically to water flow tests and this has not been an issue. Local jurisdictions already include their own safety factor, just as many contractors include their own safety factors within their own set of calculations above the standard.



Public Comment No. 134-NFPA 13-2017 [Section No. A.5.2.2.2.1.1]

Public Comment No. 135-NFPA 13-2017 [Section No. A.5.2.2.2.1.2]


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Related Item

FR-751





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: It is difficult to provide a prescriptive safety factor that would apply to every water supply throughoutthe world. However, certain conditions should be considered or analyzed when determining if awater supply is adequate to meet the needs of a fire protection system. Safety factors should be thepurview of local jurisdictions and where required adopted into an enforceable code amendment.


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5.2.2.2.1


5.2.2.2.1.1*


5.2.2.2.1.2*


[5.2.2.2.1.2]

where:

P = pressure available from the water supply to use for a fire protection system that will be calculated fora given flow (Q)

PR = residual pressure measured during the waterflow test while the flow QR was discharging from the

water supply

PS = static pressure measured during the waterflow test


QR = flow discharging from the water supply when PR was measured

PL = expected low static pressure at the location of the test results accounting for daily and seasonalfluctuations (not extreme conditions) obtained from the water utility


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5.2.2.2.1.3

Where the water authority does not provide a value for PL, the value of PL shall be calculated from the

following formula:

[5.2.2.2.1.3]

5.2.2.2.1

Where a waterflow test is conducted, the volume and pressure available for use for a fire protection system sha

5.2.2.2.1.1*

Water supply adjustments shall be based on knowledge of the water supply and engineering judgment, taking in

5.2.2.2.1.2*

If knowledge of the water supply is unavailable, the following formula shall be used to determine volume and pre

http://submittals.nfpa.org/TerraVi

[5.2.2.2.1.2]

where:

P = pressure available from the water supply to use for a fire protection system that will be calculated for a

P R = residual pressure measured during the waterflow test while the flow Q R was discharging from the wa




P L = expected low static pressure at the location of the test results accounting for daily and seasonal fluctu

5.2.2.2.1.3

Where the water authority does not provide a value for P L , the value of P L shall be calculated from the follow


APPA disagrees with adding more words to this subsection. Subsection 5.2.2.2.1.1 requires adjustments to flow test data that was guidance in the annex. In subsection 5.2.2.2.1.2 it requires a factor of safety of an arbitrary 10% if a flow test is not taken and the water authority does not provide a factor of safety. However, this section does not explicitly include private waterworks systems. We agree with Technical Committee voting member John August Denhardt in his approval comments – “While I have mixed feelings on this issue, I do feel that this issue does need guidance in the body of the standard. I'm still not sure this approach is the correct one. However, where is the committee statement? We developed a committee statement to attempt to draw out comments from the users of the standard.” We are asking the technical committee to review this section for clarity.

Related Item

P-1


Submitter Full Name: Billie Zidek

Organization: APPA

Street Address:

City:

State:

Zip:



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Committee Statement

CommitteeAction:

Accepted




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5.2.2.2.1


5.2.2.2.1.1 *


5.2.2.2.1.2 *


[5.2.2.2.1.

2]

where:

P = pressure available from the water supply to use for a fire protection system that will be calculatedfor a given flow ( Q )

P R = residual pressure measured during the waterflow test while the flow Q R was discharging from

the water supply




P L = expected low static pressure at the location of the test results accounting for daily and seasonalfluctuations (not extreme conditions) obtained from the water utility

[5.2.2.2.1.3

5.2.2.2.1. 3

Where the water authority does not provide a value for P L , the value of P L shall be calculated from the

following formula:

]


The responsibility for adjustments to the water supply should not be a mandate for the contractor, rather it should be the responsibility of the water purveyor. This is clearly identified in the IBC in section 903.3.5, and to establish this as a requirement for the contractor places them at odds with the IBC by complying with NFPA 13.

Related Item

PI-160



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Submitter Full Name: Kenneth Wagoner

Organization: Parsley Consulting

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted




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6.1.1.1 Listing.


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Piping manufactured in accordance with Table 6.1.1.1 shall be permitted to be used. [24:10.1.1.1]

Table 6.1.1.1 Manufacturing Standards for Underground Pipe

Materials and Dimensions

Ductile Iron

Cement Mortar Lining for Ductile Iron Pipe and Fittings for Water

Polyethylene Encasement for Ductile Iron Pipe Systems

Rubber-Gasket Joints for Ductile Iron Pressure Pipe and Fittings

Flanged Ductile Iron Pipe with Ductile Iron or Gray Iron Threaded Flanges

Thickness Design of Ductile Iron Pipe

Ductile Iron Pipe, Centrifugally Cast for Water

Standard for the Installation of Ductile Iron Water Mains and Their Appurtenances

Concrete

Steel

Steel Water Pipe 6 in. (150 mm) and Larger

Coal-Tar Protective Coatings and Linings for Steel Water Pipe

Cement-Mortar Protective Lining and Coating for Steel Water Pipe 4 in. (100 mm) and Larger — Shop Applied

Field Welding of Steel Water Pipe

Steel Pipe Flanges for Waterworks Service — Sizes 4 in. Through 144 in. (100 mm Through 3,600 mm)

Dimensions for Fabricated Steel Water Pipe Fittings

A Guide for Steel Pipe Design and Installation

Concrete

Reinforced Concrete Pressure Pipe, Steel-Cylinder Type

Prestressed Concrete Pressure Pipe, Steel-Cylinder Type

Reinforced Concrete Pressure Pipe, Non-Cylinder Type

Reinforced Concrete Pressure Pipe, Steel-Cylinder Type, Pretensioned

Standard for Asbestos-Cement Distribution Pipe, 4 in. Through 16 in., for Water Distribution Systems

Cement-Mortar Lining of Water Pipe Lines 4 in. and Larger — in Place


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Materials and Dimensions

Plastic

Polyvinyl Chloride (PVC) Pressure Pipe, 4 in. Through 12 in., for Water Distribution

Polyvinyl Chloride (PVC) Pressure Pipe, 14 in. Through 48 in., for Water Distribution

Polyethylene (PE) Pressure Pipe and Fittings, 4 in. (100 mm) Through 63 in. (1575 mm) for Water Distribution

Molecularly Oriented Polyvinyl Chloride (PVCO) 4-24 in.

Brass

Specification for Seamless Red Brass Pipe

Copper

Specification for Seamless Copper Tube

Specification for Seamless Copper Water Tube

Requirements for Wrought Seamless Copper and Copper-Alloy Tube

[24:Table 10.1.1.1]


Reference is made to the statement of problem and substantiation of Public Comment No.15-NFPA 24-2017 [ Section No. 10.1.1.1 ] .

Related Item

Public Input No. 24-NFPA 24-2016 [ Section No. 10.1.1.1 ]



Public Comment No.15-NFPA 24-2017 [ Section No. 10.1.1.1 ]


Submitter Full Name: Ariel Carp

Organization: On my behalf

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected


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Resolution: This is extracted text form NFPA 24. Public Input and/or Comments should be submitted toNFPA 24.


84 of 518 10/27/2017, 7:12 AM



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6.1.1.1 Listing.


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Materials and Dimensions Standard

Ductile Iron

Cement Mortar Lining for Ductile Iron Pipe and Fittings for WaterAWWAC104

Polyethylene Encasement for Ductile Iron Pipe SystemsAWWAC105

Rubber-Gasket Joints for Ductile Iron Pressure Pipe and FittingsAWWAC111

Flanged Ductile Iron Pipe with Ductile Iron or Gray Iron Threaded FlangesAWWAC115

Thickness Design of Ductile Iron PipeAWWAC150

Ductile Iron Pipe, Centrifugally Cast for WaterAWWAC151

Standard for the Installation of Ductile Iron Water Mains and Their AppurtenancesAWWAC600

Concrete

Reinforced Concrete Pressure Pipe, Steel-Cylinder TypeAWWAC300

Prestressed Concrete Pressure Pipe, Steel-Cylinder TypeAWWAC301

Reinforced Concrete Pressure Pipe, Non-Cylinder TypeAWWAC302

Reinforced Concrete Pressure Pipe, Steel-Cylinder Type, PretensionedAWWAC303

Standard for Asbestos-Cement Distribution Pipe, 4 in. Through 16 in., for Water DistributionSystems

AWWAC400

Cement-Mortar Lining of Water Pipe Lines 4 in. and Larger — in PlaceAWWAC602

Plastic

Polyvinyl Chloride (PVC) Pressure Pipe, 4 in. Through 12 in., for Water DistributionAWWAC900

Polyvinyl Chloride (PVC) Pressure Pipe, 14 in. Through 48 in., for Water DistributionAWWAC905

Polyethylene (PE) Pressure Pipe and Fittings, 4 in. (100 mm) Through 63 in. (1575 mm) forWater Distribution

AWWAC906

Molecularly Oriented Polyvinyl Chloride (PVCO) 4-24 in.AWWAC909

Brass

Specification for Seamless Red Brass Pipe ASTM B43

Copper

Specification for Seamless Copper Tube ASTM B75

Specification for Seamless Copper Water Tube ASTM B88


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Requirements for Wrought Seamless Copper and Copper-Alloy Tube ASTM B251

[24:Table 10.1.1.1]


Please add HDPE underground pipes and its specific C Factor: that's most common type of pipe used for u/g mains, but is not mentioned

Related Item

table 6.1.1.1


Submitter Full Name: Dario Fumagalli

Organization: ADWANCE SRL

Street Address:

City:

State:

Zip:

Submittal Date: Mon Apr 03 14:16:21 EDT 2017

Committee Statement

CommitteeAction:

Rejected

Resolution: This is extracted text from NFPA 24. Public Input and / or Comments should be submitted toNFPA 24.


88 of 518 10/27/2017, 7:12 AM


6.1.1.1 Listing.




Ductile Iron

Cement Mortar Lining for Ductile Iron Pipe and Fittings for Water AWWA C104

Polyethylene Encasement for Ductile Iron Pipe Systems AWWA C105

Rubber-Gasket Joints for Ductile Iron Pressure Pipe and Fittings AWWA C111

Flanged Ductile Iron Pipe with Ductile Iron or Gray Iron Threaded Flanges AWWA C115

Thickness Design of Ductile Iron Pipe AWWA C150

Ductile Iron Pipe, Centrifugally Cast for Water AWWA C151

Standard for the Installation of Ductile Iron Water Mains and Their Appurtenances AWWA C600

Concrete

Reinforced Concrete Pressure Pipe, Steel-Cylinder Type AWWA C300

Prestressed Concrete Pressure Pipe, Steel-Cylinder Type AWWA C301

Reinforced Concrete Pressure Pipe, Non-Cylinder Type AWWA C302

Reinforced Concrete Pressure Pipe, Steel-Cylinder Type, Pretensioned AWWA C303

Standard for Asbestos-Cement Distribution Pipe, 4 in. Through 16 in., for WaterDistribution Systems

AWWA C400

Cement-Mortar Lining of Water Pipe Lines 4 in. and Larger — in Place AWWA C602

Plastic

Polyvinyl Chloride (PVC) Pressure Pipe, 4 in. Through 12 in., for Water Distribution AWWA C900

Polyvinyl Chloride (PVC) Pressure Pipe, 14 in. Through 48 in., for Water Distribution AWWA C905

Polyethylene (PE) Pressure Pipe and Fittings, 4 in. (100 mm) Through 63 in. (1575 mm)for Water Distribution

AWWA C906

Molecularly Oriented Polyvinyl Chloride (PVCO) 4-24 in. AWWA C909

Brass

Specification for Seamless Red Brass Pipe ASTM B43

Copper

Specification for Seamless Copper Tube ASTM B75

Specification for Seamless Copper Water Tube ASTM B88

Requirements for Wrought Seamless Copper and Copper-Alloy Tube

Stainless Steel

Specification for Standard Specification for Seamless, Welded, and Heavily ColdWorked Austenitic Stainless Steel Pipes

ASTM B251

ASTMA312/A312M

[24:Table 10.1.1.1]


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The addition of this material into this section would allow the use of an appropriate material already allowed for use in Table 6.3.1.1 of the 2016 version of NFPA 13, and is currently included in Table 7.3.1.1 of the proposed 2019 version.




Related Item

FR 7.3.1.1


Submitter Full Name: Chris Haldiman

Organization: Watts Water Technologies

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: This is extracted text form NFPA 24. Public Input and/or Comments should be submitted toNFPA 24.


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6.1.2*

All piping used in private fire service mains shall be rated for the maximum system working pressure towhich the piping is exposed to but shall not be rated at less than 150 psi (10 bar). [24:10.1.2]

6.1.2.1 When the underground piping can be supplied or pressurized by a Fire Department Connection(FDC), the underground piping shall be designed to withstand a working pressure of not less than 200 psi(Class 200), or 50 psi greater than the system design pressure, whichever is greater.


This change intends to require higher pressure ratings for underground lines that can be fed by FDC. Delivery of water at FDC can cause pressures that exceed 150 psi. Typically, use of 200 psi rated line can withstand the pressures delivered at the FDC. However, when higher pressures are required at the FDC due to system demands, the underground line is required to be listed for 50 psi above that demand pressure. The 50 psi above design pressure is to allow for pipe to be listed for the pressure used during the hydrostatic test.

An additional consideration for the committee is the fact that when the primary water feed into the building is out of service the FDC is frequently used as water source.

Related Item

PI 406


Submitter Full Name: Lynn Nielson

Organization: City of Henderson

Affilliation: Self

Street Address:

City:

State:

Zip:


Committee Statement


Resolution: 200 psi is adequate for this application.


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6.2.1.1

Fittings manufactured in accordance with Table 6.2.1.1 shall be permitted to be used. [24:Table 10.2.1.1]

Table 6.2.1.1 Fittings Materials and Dimensions


Cast Iron

Gray Iron Threaded Fittings, Classes 125 and 250 ASME B16.4

Gray Iron Pipe Flanges and Flanged Fittings, Classes 25, 125, and 250 ASME B16.1

Ductile Iron

Ductile Iron and Gray Iron Fittings, 3 in. Through 48 in., for Water and other Liquids AWWA C110

Ductile Iron Compact Fittings, 3 in. Through 24 in. and 54 in. through 64 in. for WaterService

AWWA C153

Malleable Iron

Malleable Iron Threaded Fittings, Class 150 and 300 ASME B16.3

Steel

Factory-Made Wrought Steel Buttweld Fittings ASME B16.9

Buttwelding Ends ASME B16.25

Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderateand Elevated Temperatures

ASTM A234

Pipe Flanges and Flanged Fittings, NPS 1⁄2 Through 24 ASME B16.5

Forged Steel Fittings, Socket Welded and Threaded ASME B16.11

Steel Pipe Flanges for Waterworks Service — Sizes 4 in. Through 144 in. AWWA C207

Dimensions for Fabricated Steel Water Pipe Fittings AWWA C208

Copper

Wrought Copper and Bronze Solder Joint Pressure Fittings ASME B16.22

Cast Cast Bronze Solder Joint Pressure Fittings ASME B16.18

Bronze Fittings

Cast Bronze Threaded

FittingsFittingsi

Stainless Steel

Specification for Standard Specification for Seamless, Welded, and Heavily Cold WorkedAustenitic Stainless Steel Pipes

ASTM B16.15

ASTMA312/312M

[24:Table 10.2.2.1]



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The addition of this material into this section would allow the use of an appropriate material already allowed for use in Table 6.3.1.1 of the 2016 version of NFPA 13, and is currently included in Table 7.3.1.1 of the proposed 2019 version



Public Comment No. 50-NFPA 13-2017 [Section No. 6.1.1.1] Same material for the same application.

Related Item

First Report


Submitter Full Name: Chris Haldiman

Organization: Watts Water Technologies

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: This is extracted text from NFPA 24. Public Input and/or Comment should be submitted to NFPA24. See SR 2 for NFPA 24. Steel pipe is not suitable for underground applications unless listed forthat purpose.


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6.2.9.7.1*

The list shall include shall be on a machine-engraved metal or rigid plastic sign with capitalized lettering aminimum 14 point (¼ inch high) in arial or similar font and i nclude the following:

(1) Sprinkler Identification Number (SIN) if equipped; or the manufacturer, model, orifice, deflector type,thermal sensitivity, and pressure rating

(2) General description

(3) Quantity of each type to be contained in the cabinet

(4) Issue or revision date of the list


The intent of this proposal is to require professionally engraved signs to be used for the sprinkler cabinet sign. For years, these plates have been installed as a sticker using permanent marker or a metal plate using a scribing tool. The areas where this cabinet is usually placed on a property are generally dusty and/or exposed to the extreme heat of the Las Vegas Valley. Our findings have shown that permanent marker is good for less than five (5) years when these are regularly exposed to these conditions. Two other problems are consistently noted with these plates being installed with permanent marker or a scribing tool. The first deals with those written in permanent marker. Not everyone prints well and the information required often cannot be written small and legibly enough with a permanent marker or a scribing tool to make the information permanently readable. The other deals with the scribing tools and the fact that most scribing tools give very thin lines that again are not readable. People often make mistakes with these also which leads to other issues with their readability.

Related Item

PI 407




Affilliation: Self

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: Not necessarily applicable to all jurisdictions and not appropriate for all systems particularlysmaller systems. The standard does not presently prohibit this approach. Cost could also beprohibitive and changes to the list could also be cost prohibitive.


94 of 518 10/27/2017, 7:12 AM


7.4.1*

Fittings used in sprinkler systems shall meet or exceed the standards in Table 7.4.1 or be in accordancewith 7.4.2 or 7.4.4.

Table 7.4.1 Fittings Materials and Dimensions


Cast Iron

Cast Iron Threaded Fittings, Class 125 and 250 ASME B16.4

Cast Iron Pipe Flanges and Flanged Fittings ASME B16.1

Malleable Iron

Malleable Iron Threaded Fittings, Class 150 and 300 ASME B16.3

Steel

Factory-Made Wrought Steel Buttweld Fittings ASME B16.9

Buttwelding Ends for Pipe, Valves, Flanges, and Fittings ASME B16.25

Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel forModerate and Elevated Temperatures

ASTM A234

Steel Pipe Flanges and Flanged Fittings ASME B16.5

Forged Steel Fittings, Socket Welded and Threaded ASME B16.11

Copper

Wrought Copper and Copper Alloy Solder Joint Pressure Fittings ASME B16.22

Cast Copper Alloy Solder Joint Pressure Fittings ASME B16.18

CPVC

Chlorinated Polyvinyl Chloride (CPVC) Specification for Schedule 80 CPVCThreaded Fittings

ASTM F437

Specification for Schedule 40 CPVC Socket Type Fittings ASTM F438

Specification for Schedule 80 CPVC Socket Type Fittings ASTM F439

Bronze Fittings

Cast Copper Alloy Threaded Fittings Classes 125 and 250 ASTM B16.15

Stainless Steel

Specification for Wrought Austenitic Stainless Steel Pipe FittingsASTMA403/A403M

Ductile Iron Fittings ASTM A536


The ASTM A536 standard is a general document for ductile iron castings. There does not seem to be a standard for the manufacture of ductile iron threaded fittings comparable to ASME B16.5 for malleable iron fittings. In a search of the internet, all of the ductile iron threaded fittings located (Tyco, Sigma, Shurjoint, Anvil, SCI, etc.) were seen to be UL listed and/or FM approved. Therefore, ductile iron threaded fittings should not be referenced in Table 7.4.1 (formerly Table 6.4.1). Instead they should be covered under Section 7.4.4 (formerly 6.4.4) for other types of fittings listed for sprinkler service.

Related Item

FR-920


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Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: The ASTM A536 standard is a general document for ductile iron castings. There does not seem tobe a standard for the manufacture of ductile iron threaded fittings comparable to ASME B16.5 formalleable iron fittings. In a search of the internet, all of the ductile iron threaded fittings located(Tyco, Sigma, Shurjoint, Anvil, SCI, etc.) were seen to be UL listed and/or FM approved. Therefore,ductile iron threaded fittings should not be referenced in Table 7.4.1 (formerly Table 6.4.1). Insteadthey should be covered under Section 7.4.4 (formerly 6.4.4) for other types of fittings listed forsprinkler service.


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Public Comment No. 304-NFPA 13-2017 [ Section No. 7.5.3.1 [Excluding any Sub-

Sections] ]

Pipe, fittings, valves, and devices to be joined with grooved couplings shall contain cut, rolled, swaged, orcast grooves in accordance with standard grooved coupling manufacturer dimensions that aredimensionally compatible with the couplings .


Related Item

FR-815





Street Address:

City:

State:

Zip:


Committee Statement



Statement: Swaged is already permitted.


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Public Comment No. 296-NFPA 13-2017 [ New Section after 7.8.2 ]

TITLE OF NEW CONTENT

7.8.3

The use of additives shall be in conformity with state and local health regulations.


There is a possibility that firefighters and others may be exposed to the water (and any additives in that water) from a sprinkler systems. Based upon this possibility,it would make sense to require any additives to meet applicable health regulations. Additionally there may be by environmental concerns regarding the disposal of sprinkler water with additives as well as cross-connection concerns and applicable environmental regulations need to be adhered with. The proposed language was taken from the existing language in NFPA 13 regarding antifreeze.

Related Item

PI-44


Submitter Full Name: Roland Asp



Street Address:

City:

State:

Zip:


Committee Statement


Resolution: State and local health regulations are not known. Additives are not specifically defined.


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8.1.1.2.2

Pressure gauges below check valves required by 16. 9.11 and 16. 15.2.2(1) shall not be required.


This PC is intended to add floor control valves (section 16.9.11) to this section. There is no reason to to install a pressure gauge on the supply side of a floor control valve. Multiple gauges reading the pressure of a common supply pipe such as those on the supply to floor control valves would be providing redundant information.



Public Comment No. 80-NFPA 13-2017 [Section No. A.8.1.1.2]

Related Item

FR-928



Organization: National Fire Sprinkler Assocation


Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: This PC is intended to add floor control valves (section 16.9.11) to this section. There is no reasonto to install a pressure gauge on the supply side of a floor control valve. Multiple gauges readingthe pressure of a common supply pipe such as those on the supply to floor control valves would beproviding redundant information.


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8.2.5.4.2 Low Differential Dry Pipe Valve.

Protection against accumulation of water above the clapper shall be provided for low differential dry pipevalves in accordance with 8.2.5.4.3.


With the updated definition for differential dry pipe valves, "low" is not longer required.



Public Comment No. 201-NFPA 13-2017 [New Section after 3.3.206.4.5]

Related Item

CI-727


Submitter Full Name: Daniel Wake

Organization: Victaulic Company of America

Street Address:

City:

State:

Zip:


Committee Statement



Statement: With the updated definition for differential dry pipe valves, "low" is not longer required.


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8.2.5.4.2 Low Differential Dry Pipe Valve.

Protection against accumulation of water above the clapper shall be provided for low differential dry pipevalves in accordance with 8.2.5.4.3.


The word low has been removed from the title and body as the issue that this section deals with affects all differential type dry valves. A PI was submitted to address low differential dry pipe valves, defining it to be where the air/nitrogen to water ratio is greater than 1 in 6. Debate was had during the first draft meeting on to the accuracy of this. Per discussion at the NFSA’s E&S committee, it was noted that water columns may adversely affect differential type dry pipe valves of any ratio. This is not an issue with mechanical type dry pipe valves.

Manufacturers classify dry pipe valves into two types: differential and mechanical type. Related PCs have been submitted in chapter 3 revising the definition of for Differential Dry Pipe Valves and a new definition for Mechanical dry pipe valve has been added. These definitions are:

Differential Dry Pipe Valve

The valve is held in the closed position by the system gas pressure exposed to the larger surface area on the air/nitrogen side of the clapper where it is at least 5 times that of the surface area on the water supply side.

Mechanical Dry Pipe Valve

Uses a series of mechanical devices such as levers, springs, diaphragms, and latches to hold the valve in the closed position with air/nitrogen pressure and without using the clapper surface areas to provide a differential between the air/nitrogen and water pressures.

Related Item

CI-728

CI-727





Street Address:

City:

State:

Zip:


Committee Statement



Statement: With the updated definition for differential dry pipe valves, "low" is not longer required.


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8.2.6.4.1*

The connection pipe from the air supply to the dry pipe valve shall not be less than 1⁄2 in. (158 mm) indiameter and shall enter the system above the priming water level of the dry pipe valve.


Editorial. The air line between the air compressor and the sprinkkler system should always be piped solid. In previous editions of the standard the term "Connection pipe" was used. By changing those words to "The connection", the possibility is opened up for connecting the air supply to the sprinkler system via a hose. It is acknowledged that the new annex text suggests the connection be as per the manufacturer's guidance, but the annex is not mandatory and air compressors are not required to be listed, so the manufacturer may not even discuss the matter in the literature and thus they may not advise against the use of an air hose.

Related Item

FR-819




Street Address:

City:

State:

Zip:


Committee Statement


Resolution: Rigid pipe connections should not be required.


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Public Comment No. 85-NFPA 13-2017 [ Section No. 8.2.6.4.2.1 ]

8.2.6.4.2.1

For systems that are filled manually, a A listed or approved shutoff valve of either the renewable disc orball valve type shall be installed on the supply side of this check valve and shall remain closed unlessfilling the system .


During the first draft meeting the committee agreed to delete "For Systems that are filled manually" and "and shall remained closed unless filling the system". This comment proposes to delete this language as agreed during the first draft meeting. In essence the committee has stated that that automatic filling of the system is required.

Related Item

FR-820

PI-393



Organization: National Fire Sprinkler Associ


Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: During the first draft meeting the committee agreed to delete "For Systems that are filled manually"and "and shall remained closed unless filling the system". This comment proposes to delete thislanguage as agreed during the first draft meeting. In essence the committee has stated that thatautomatic filling of the system is required.


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A high / low air pressure alarm switch shall be installed and report to a constantly attended location.


As I previously submitted PI#42, Hi/low air alarm pressure switches are often omitted from dry valve installations, and currently only required to monitor gas storage containers. It appears that a new requirement has been added for refrigerated spaces 8.8.2.2.1 but not fro all dry systems? This should be required on all dry systems that can be exposed to temperatures below freezing!

Related Item

PI 42 and PI 409


Submitter Full Name: David Baron

Organization: Global Fire Protection Company

Street Address:

City:

State:

Zip:

Submittal Date: Thu Mar 30 12:15:18 EDT 2017

Committee Statement

CommitteeAction:

Rejected

Resolution: This is a minimum standard and requiring supervision of a dry pipe system would be beyond theexpectations of a minimum standard.


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8.2.6.8.5

The requirements of 8.2.6.8.4 shall not apply in refrigerated spaces maintained below 5 F (-15C), wherenormal system air pressure shall be permitted to be restored within 60 minutes.


At the First Draft Meeting the committee added a new section to allow a 60 minute fill time for freezers allowed by 8.2.6.3.3. This new section, however does not appear in the first draft report. The reason for this new section is: as 8.2.6.3.3 already allows a 60 minute fill time for restoring normal pressure for freezers when using air, the same fill time also needs to be allowed when using nitrogen or other approved gas.

Related Item

FR-888





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: At the First Draft Meeting the committee added a new section to allow a 60 minute fill time forfreezers allowed by 8.2.6.3.3. This new section, however does not appear in the first draft report.The reason for this new section is: as 8.2.6.3.3 already allows a 60 minute fill time for restoringnormal pressure for freezers when using air, the same fill time also needs to be allowed when usingnitrogen or other approved gas.


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8.3.1.2.1 Actuator Supervision

Removal of an electric actuator from the pre-action or deluge valve that it controls shall result in an audibleand visual indication of system impairment at the system releasing control panel.


This proposal is to bring back PI-262 which was resolved in the the first draft. This was not a good decision by the committee. The committee statement indicated that this provision would be better handled by NFPA 72. While this may be true, the fact is that NFPA 72 does not address this issue and as such NFPA 13 needs to. Currently if a solenoid coil is removed from a pre-action or deluge system, there is no indication at the releasing control panel that the system will not work if smoke or heat is detected. This proposal will ensure that pre-action systems and deluge system will operate as they are intended.

Related Item

PI-262





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:


Resolution: SR-419-NFPA 13-2017 Reasonable time for development of products to comply with thisrequirement is needed.

Statement: This proposal is to bring back PI-262 which was resolved in the the first draft. This was not a gooddecision by the committee. The committee statement indicated that this provision would be betterhandled by NFPA 72. While this may be true, the fact is that NFPA 72 does not address this issueand as such NFPA 13 needs to. Currently if a solenoid coil is removed from a pre-action or delugesystem, there is no indication at the releasing control panel that the system will not work if smoke orheat is detected. This proposal will ensure that pre-action systems and deluge system will operateas they are intended.


106 of 518 10/27/2017, 7:12 AM



Type your content here ...

Add a new section; 7.3.2.4.5Removal of the electric coil from the solenoid valve it controls shall result in asupervisory signal at the releasing service fire control panel.


The coil is frequently removed from the solenoid when the system is tested. There is currently no supervision of this and no way to know that the system will operate when activated.I couldn't decide if it fit better in this section or in 6.7 under valves. The removal of the coil from the solenoid is really no different than a closed valve which is what the handbook says section 6.7 is there to help prevent.This requirement is in NFPA 2001, 2016, 4.3.4.1 for clean agent systems, the same concern applies to water based systems

This proposal has already been submitted as Public Input 262 and rejected by the committee stating it belongs in NFPA 72. I made the same proposal to NFPA 72 and that technical committee rejected it saying it is outside the scope of 72. May I suggest the TC's of 13 and 72 get together and chat about this.7.3.2.4 of NFPA 13 covers Supervision of preaction systems, sprinkler piping, air pressure and detection devices. The solenoid actuating device is a part of the preaction system.

Related Item

Actuator or Solenoid supervision, Public Input 262. These proposals are requesting the same thing, tohelp ensure that the solenoid / actuator will operate when needed. NFPA 72 has said it is outside thescope of that standard, it belongs in one of them. It's in NFPA 2001


Submitter Full Name: Michael Henke

Organization: Potter Electric Signal Company

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:


Resolution: SR-419-NFPA 13-2017 Reasonable time for development of products to comply with thisrequirement is needed.

Statement: This proposal is to bring back PI-262 which was resolved in the the first draft. This was not a gooddecision by the committee. The committee statement indicated that this provision would be betterhandled by NFPA 72. While this may be true, the fact is that NFPA 72 does not address this issueand as such NFPA 13 needs to. Currently if a solenoid coil is removed from a pre-action or delugesystem, there is no indication at the releasing control panel that the system will not work if smoke orheat is detected. This proposal will ensure that pre-action systems and deluge system will operateas they are intended.


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8.7.7 Gauge Connections.

An approved A pressure gauge conforming to16.13 shall be installed immediately below the control valveof each system.


During the First Draft Meeting, the committee voted to delete the word "approved" as it is redundant. Section 16.13.3 already requires the gauge to be approved so it is not necessary to repeat this requirement.

Related Item

FR-830





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: During the First Draft Meeting, the committee voted to delete the word "approved" as it isredundant. Section 16.13.3 already requires the gauge to be approved so it is not necessary torepeat this requirement.


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8.9.2* Sprinklers and Automatic Spray Nozzles.

8.9.2.1

Unless the requirements of 8.9.2.2 are met, standard Standard sprinklers or automatic spray nozzlesshall be so located as to provide for the protection of exhaust ducts, hood exhaust duct collars, and hoodexhaust plenum chambers.

8.9.2. 2

Sprinklers or automatic spray nozzles in ducts, duct collars, and plenum chambers shall not be requiredwhere all cooking equipment is served by listed grease extractors.

8.9.2. 3

Unless the requirements of 8.9.2.5 are met, standard sprinklers or automatic spray nozzles shall be solocated as to provide for the protection of cooking equipment and cooking surfaces.

8.9.2.4

Hoods containing automatic fire-extinguishing systems are protected areas; therefore, these hoods are notconsidered obstructions to overhead sprinkler systems and shall not require floor coverage underneath.

8.9.2.5

Cooking equipment below hoods that contain automatic fire-extinguishing equipment is protected and shallnot require protection from the overhead sprinkler system.


The modifications submitted as part of PI-588 should be reconsidered. The requirement of 8.9.2.2 permitting omission of sprinklers or nozzles creates a conflict with the requirements of NFPA 96. Use of a grease extractor could mean a grease filter, which should not be considered equivalent to sprinkler protection or a fire suppression system. This type of equipment does not remove all grease and if not cleaned will allow for collection of grease. The current language could allow an omission of protection from these areas, which were only intended if specifically approved by the AHJ.

Substantiation by Original Submitter, Russell Fleming:

7.9.2.2 is an exception to the requirement for protection of commercial cooking equipment exhaust ducts, hood exhaust ducts, and hood exhaust plenum chambers, provided that the cooking equipment is served by “listed grease extractors”. However, the term “listed grease extractors” is today associated with listed grease filters, and the NFPA Committee on Venting Systems for Cooking Appliances that writes NFPA 96 does not recognize such filters to substitute for a fire extinguishing system.

This section originally appeared as an exception to the base requirement in the 1987 edition of NFPA 13, when a full rewrite of commercial cooking equipment protection took place. As originally proposed, this allowance was only to be given by special permission of the authority having jurisdiction. That condition was dropped during the public comment stage without explanation.

Commentary following this exception in the 1987 Automatic Sprinkler Systems Handbook gives some indication of the original intent: “Subject to acceptance by the authority having jurisdiction, if all cooking equipment is served by listed grease extractors, the sprinkler protection may be limited to the cooking surfaces. Some manufacturers of exhaust systems incorporating listed grease extractors provide listed built-in water spray fire protection for cooking surfaces in a preengineered package ready for connection to the sprinkler system.” As such, there may have been some confusion with the development of what are now being termed “water-wash systems” or, if listed for the application, “water-wash extinguishing systems.”

This change took place in a day prior to the development of UL 300 to address the hazard of vegetable-based


109 of 518 10/27/2017, 7:12 AM

cooking oils, and the resulting use of wet chemical systems instead of dry chemical systems. The use of the UL-300 compliant wet chemical systems to protect the hood and ducts up to 75 ft in length continues to be acknowledged in Sections 7.9.2.4, 7.9.2.5, and 7.9.3.4.1 of NFPA 13. However, the NFPA 96 committee does not recognize the ability of listed grease extraction devices to substitute for fire-extinguishing equipment, and neither should NFPA 13.

The submitter serves as a liaison from the NFPA Sprinkler Project to the Committee on Venting Systems for Cooking Appliances.

Related Item

PI-588





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: The modifications submitted as part of PI-588 should be reconsidered. The requirement of 8.9.2.2permitting omission of sprinklers or nozzles creates a conflict with the requirements of NFPA 96. Useof a grease extractor could mean a grease filter, which should not be considered equivalent tosprinkler protection or a fire suppression system. This type of equipment does not remove all greaseand if not cleaned will allow for collection of grease. The current language could allow an omission ofprotection from these areas, which were only intended if specifically approved by the AHJ.


7.9.2.2 is an exception to the requirement for protection of commercial cooking equipment exhaustducts, hood exhaust ducts, and hood exhaust plenum chambers, provided that the cookingequipment is served by “listed grease extractors”. However, the term “listed grease extractors” istoday associated with listed grease filters, and the NFPA Committee on Venting Systems for CookingAppliances that writes NFPA 96 does not recognize such filters to substitute for a fire extinguishingsystem.

This section originally appeared as an exception to the base requirement in the 1987 edition ofNFPA 13, when a full rewrite of commercial cooking equipment protection took place. As originallyproposed, this allowance was only to be given by special permission of the authority havingjurisdiction. That condition was dropped during the public comment stage without explanation.

Commentary following this exception in the 1987 Automatic Sprinkler Systems Handbook givessome indication of the original intent: “Subject to acceptance by the authority having jurisdiction, if allcooking equipment is served by listed grease extractors, the sprinkler protection may be limited tothe cooking surfaces. Some manufacturers of exhaust systems incorporating listed grease extractorsprovide listed built-in water spray fire protection for cooking surfaces in a preengineered packageready for connection to the sprinkler system.” As such, there may have been some confusion withthe development of what are now being termed “water-wash systems” or, if listed for the application,“water-wash extinguishing systems.”


110 of 518 10/27/2017, 7:12 AM

This change took place in a day prior to the development of UL 300 to address the hazard ofvegetable-based cooking oils, and the resulting use of wet chemical systems instead of dry chemicalsystems. The use of the UL-300 compliant wet chemical systems to protect the hood and ducts up to75 ft in length continues to be acknowledged in Sections 7.9.2.4, 7.9.2.5, and 7.9.3.4.1 of NFPA 13.However, the NFPA 96 committee does not recognize the ability of listed grease extraction devicesto substitute for fire-extinguishing equipment, and neither should NFPA 13.

The submitter serves as a liaison from the NFPA Sprinkler Project to the Committee on VentingSystems for Cooking Appliances.


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Public Comment No. 326-NFPA 13-2017 [ Sections 8.9.2.1, 8.9.2.2 ]

Sections 8.9.2.1, 8.9.2.2

8.9.2.1

Unless the requirements of 8.9.2.2 are met, standard Standard sprinklers or automatic spray nozzlesshall be so located as to provide for the protection of exhaust ducts, hood exhaust duct collars, and hoodexhaust plenum chambers.

8.9.2.2

Sprinklers or automatic spray nozzles in ducts, duct collars, and plenum chambers shall not be requiredwhere all cooking equipment is served by listed grease extractors.


PI-588 was resolved during the first draft meeting but this was a mistake. Listed grease extractors are nothing more then baffles that will not prevent grease laden vapors from entering the exhaust ducts. The baffles may capture some of the grease but not enough to prevent a significant fire risk. The grease laden vapors will deposit the grease on the interior surface of the duct posing a significant fire risk. Sprinklers are needed to mitigate this risk. Additionally - It is not uncommon for restaurants to neglect to clean the ducts on a regular basis thus increasing the fire risk.Below is Russ Flemings original substantiation for this PI which warrants careful consideration.

"7.9.2.2 is an exception to the requirement for protection of commercial cooking equipment exhaust ducts, hood exhaust ducts, and hood exhaust plenum chambers, provided that the cooking equipment is served by “listed grease extractors”. However, the term “listed grease extractors” is today associated with listed grease filters, and the NFPA Committee on Venting Systems for Cooking Appliances that writes NFPA 96 does not recognize such filters to substitute for a fire extinguishing system. This section originally appeared as an exception to the base requirement in the 1987 edition of NFPA 13, when a full rewrite of commercial cooking equipment protection took place. As originally proposed, this allowance was only to be given by special permission of the authority having jurisdiction. That condition was dropped during the public comment stage without explanation. Commentary following this exception in the 1987 Automatic Sprinkler Systems Handbook gives some indication of the original intent: “Subject to acceptance by the authority having jurisdiction, if all cooking equipment is served by listed grease extractors, the sprinkler protection may be limited to the cooking surfaces. Some manufacturers of exhaust systems incorporating listed grease extractors provide listed built-in water spray fire protection for cooking surfaces in a preengineered package ready for connection to the sprinkler system.” As such, there may have been some confusion with the development of what are now being termed “water-wash systems” or, if listed for the application, “water-wash extinguishing systems.” This change took place in a day prior to the development of UL 300 to address the hazard of vegetable-based cooking oils, and the resulting use of wet chemical systems instead of dry chemical systems. The use of the UL-300 compliant wet chemical systems to protect the hood and ducts up to 75 ft in length continues to be acknowledged in Sections 7.9.2.4, 7.9.2.5, and 7.9.3.4.1 of NFPA 13. However, the NFPA 96 committee does not recognize the ability of listed grease extraction devices to substitute for fire-extinguishing equipment, and neither should NFPA 13. The submitter serves as a liaison from the NFPA Sprinkler Project to the Committee on Venting Systems for Cooking Appliances. "

Related Item

PI-588





Street Address:


112 of 518 10/27/2017, 7:12 AM

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: The modifications submitted as part of PI-588 should be reconsidered. The requirement of 8.9.2.2permitting omission of sprinklers or nozzles creates a conflict with the requirements of NFPA 96. Useof a grease extractor could mean a grease filter, which should not be considered equivalent tosprinkler protection or a fire suppression system. This type of equipment does not remove all greaseand if not cleaned will allow for collection of grease. The current language could allow an omission ofprotection from these areas, which were only intended if specifically approved by the AHJ.


7.9.2.2 is an exception to the requirement for protection of commercial cooking equipment exhaustducts, hood exhaust ducts, and hood exhaust plenum chambers, provided that the cookingequipment is served by “listed grease extractors”. However, the term “listed grease extractors” istoday associated with listed grease filters, and the NFPA Committee on Venting Systems for CookingAppliances that writes NFPA 96 does not recognize such filters to substitute for a fire extinguishingsystem.

This section originally appeared as an exception to the base requirement in the 1987 edition ofNFPA 13, when a full rewrite of commercial cooking equipment protection took place. As originallyproposed, this allowance was only to be given by special permission of the authority havingjurisdiction. That condition was dropped during the public comment stage without explanation.

Commentary following this exception in the 1987 Automatic Sprinkler Systems Handbook givessome indication of the original intent: “Subject to acceptance by the authority having jurisdiction, if allcooking equipment is served by listed grease extractors, the sprinkler protection may be limited tothe cooking surfaces. Some manufacturers of exhaust systems incorporating listed grease extractorsprovide listed built-in water spray fire protection for cooking surfaces in a preengineered packageready for connection to the sprinkler system.” As such, there may have been some confusion withthe development of what are now being termed “water-wash systems” or, if listed for the application,“water-wash extinguishing systems.”

This change took place in a day prior to the development of UL 300 to address the hazard ofvegetable-based cooking oils, and the resulting use of wet chemical systems instead of dry chemicalsystems. The use of the UL-300 compliant wet chemical systems to protect the hood and ducts up to75 ft in length continues to be acknowledged in Sections 7.9.2.4, 7.9.2.5, and 7.9.3.4.1 of NFPA 13.However, the NFPA 96 committee does not recognize the ability of listed grease extraction devicesto substitute for fire-extinguishing equipment, and neither should NFPA 13.

The submitter serves as a liaison from the NFPA Sprinkler Project to the Committee on VentingSystems for Cooking Appliances.


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9.2.1.1.1

Spaces above cloud ceilings shall contain either noncombustible or limited combustible construction withminimal combustible loading.


This proposed wording is the sames as the proposed language to section 9.2.7.1 (4). It is appropriate to repeat this requirement in the concealed space section only to remind users that the space above a cloud ceiling must be of noncombustible or limited combustible construction.



Public Comment No. 93-NFPA 13-2017 [Section No. 9.2.7.1] Same issue


Related Item

FR-715

PI-716

PI-162





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: This proposed comment will specifically require that the spaces above cloud ceilings be ofnoncombustible or limited combustible construction. This was, we believe the intent of the rules fromthe beginning, however this was not directly stated. Additionally, this comment and related commentswill divorce the cloud ceiling rules from those of concealed spaces without making any substantialtechnical changes. The committee has been divided upon whether the spaces above cloud ceilingsare in fact a type of concealed space. This proposal along with related proposals and FR 715 willseparate these ceiling features from concealed spaces.and by adding the new subsection (4), theconcerns of those who believe these features should be under the concealed space section havebeen addressed.

There are related proposal to delete section 9.2.1.1.3 (as these requirements are now in this section)and to add a deflector distance of 1 - 12 inches below the cloud.


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115 of 518 10/27/2017, 7:12 AM


9.2.1.1.3

The space above cloud ceilings meeting the requirements in 9.2.7.1 and having openings with acombined total area of not more than 20 percent of the ceiling, construction feature, or plane used todetermine the boundaries of the concealed space shall be permitted.


The pertinent criteria in this section was copied to 9.2.7.1. This section should have been deleted at that time.The area above the cloud ceiling is a unique and explicitly researched area with its own identified criteria. Forcing it into the generic concealed space section has unintended consequences without improving the level of fire protection. Imposing a maximum 8 inch gap for openings greater than 4 ft long when the research was based on much longer gaps is unwarranted. Imposing a 3,000 sq ft remote area for an unprotected concealed combustible space is also unwarranted.

Related Item

PI-175




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: This section is redundant as FR 716 moved these requirements to section 9.2.7.1. The requirementthat the total size of the openings in a cloud ceiling be no more than 20% of the ceiling has notchanged but have been relocated to the cloud ceiling section.

This comment and related comments will divorce the cloud ceiling rules from those of concealedspaces without making any substantial technical changes. The committee has been divided uponwhether the spaces above cloud ceilings are in fact a type of concealed space. This proposal alongwith related proposals and FR 715 will separate these ceiling features from concealed spaces.andby adding the new subsection 9.2.7.1 (4), the concerns of those who believe these features shouldbe under the concealed space section have been addressed.

Related proposals (PC 93 and PC 94) will require require that the spaces above cloud ceilings be ofnoncombustible or limited combustible construction and will add a deflector distance of 1 - 12 inchesfor the sprinklers below the cloud.


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9.2.1.1.3

The space above cloud ceilings meeting the requirements in 9.2.7.1 and having openings with acombined total area of not more than 20 percent of the ceiling, construction feature, or plane used todetermine the boundaries of the concealed space shall be permitted.


This section is redundant as FR 716 moved these requirements to section 9.2.7.1. The requirement that the total size of the openings in a cloud ceiling be no more than 20% of the ceiling has not changed but have been relocated to the cloud ceiling section.This comment and related comments will divorce the cloud ceiling rules from those of concealed spaces without making any substantial technical changes. The committee has been divided upon whether the spaces above cloud ceilings are in fact a type of concealed space. This proposal along with related proposals and FR 715 will separate these ceiling features from concealed spaces.and by adding the new subsection 9.2.7.1 (4), the concerns of those who believe these features should be under the concealed space section have been addressed.

Related proposals (PC 93 and PC 94) will require require that the spaces above cloud ceilings be of noncombustible or limited combustible construction and will add a deflector distance of 1 - 12 inches for the sprinklers below the cloud.



Public Comment No. 93-NFPA 13-2017 [Section No. 9.2.7.1] Cloud ceiling

Public Comment No. 94-NFPA 13-2017 [New Section after 9.2.7.2.1] Cloud Ceiling


Related Item

PI 162

FR 715

FR-716

FR-718





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:




117 of 518 10/27/2017, 7:12 AM

Statement: This section is redundant as FR 716 moved these requirements to section 9.2.7.1. The requirementthat the total size of the openings in a cloud ceiling be no more than 20% of the ceiling has notchanged but have been relocated to the cloud ceiling section.

This comment and related comments will divorce the cloud ceiling rules from those of concealedspaces without making any substantial technical changes. The committee has been divided uponwhether the spaces above cloud ceilings are in fact a type of concealed space. This proposal alongwith related proposals and FR 715 will separate these ceiling features from concealed spaces.andby adding the new subsection 9.2.7.1 (4), the concerns of those who believe these features shouldbe under the concealed space section have been addressed.

Related proposals (PC 93 and PC 94) will require require that the spaces above cloud ceilings be ofnoncombustible or limited combustible construction and will add a deflector distance of 1 - 12 inchesfor the sprinklers below the cloud.


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9.2.1.10

Concealed spaces over isolated small compartments spaces not exceeding 55 ft 2 (5.1 m 2) in area overrooms or compartments shall not require sprinkler protection.

A.8.15.1.2.9

The concealed space cannot be subdivided into areas less than 55 ft 2 (5.1 m 2 ) in area with the intent toomit sprinklers from concealed spaces.


The focus should be size of the concealed space and not the room below it. It make no sense why the concealed space has to be over isolated small compartments.

Related Item

379


Submitter Full Name: Thomas Wellen


Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: The existing language restricts unprotected spaces such that they are only in isolated locations asopposed to adjacent to locations that can result in numerous non-sprinklered concealed spaces.


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9.2.1.15

Vertical

Sprinklers shall not be required in vertical pipe chases under

10 ft

10 ft 2 (0.

9 m

9 m 2

) that are firestopped at each floor using materials equivalent to the floor construction, and where such

). Such pipe chases shall contain no sources of ignition

, piping shall be water-filled , limited combustible or noncombustible, and

. In buildings having more than a single

story, pipe penetrations at each floor shall be

properly sealed and shall not require sprinkler protection

firestopped using materials equivalent to the floor construction .



Wording_for_PC_for_FR-702.docx

Terraview version of this PC is difficult to read. It should read per this file.


A pipe chase in a single story building less than 10 square feet should not be required to be have sprinkler protection. Currently this section applies to 2 story or taller buildings (multifloor). In addition, the committee should seriously look at the requirement to only allow non combustible piping when non water filled. This contradicts section 8.15.1.2.1 which allows minimal combustible loading. Once could infer that a space above an acoustical ceiling containing PVC piping for Drain and Waste should be protected.

Related Item

FR-702





Street Address:

City:

State:

Zip:


Committee Statement


120 of 518 10/27/2017, 7:12 AM

CommitteeAction:

Accepted


Statement: A pipe chase in a single story building less than 10 square feet should not be required to be havesprinkler protection. Currently this section applies to 2 story or taller buildings (multifloor). Inaddition, the committee should seriously look at the requirement to only allow non combustiblepiping when non water filled. This contradicts section 8.15.1.2.1 which allows minimal combustibleloading. Once could infer that a space above an acoustical ceiling containing PVC piping for Drainand Waste should be protected.


121 of 518 10/27/2017, 7:12 AM

9.2.1.15 Sprinklers shall not be required in vertical pipe chases under 10 ft 2 (0.9 m 2 ). Such pipe chases shall contain no sources of ignition. In buildings having more than a single story, pipe penetrations at each floor shall be firestopped using materials equivalent to the floor construction. Substantiation: A pipe chase in a single story building less than 10 square feet should not be required to be have sprinkler protection. Currently this section applies to 2 story or taller buildings (multifloor). In addition, the committee should seriously look at the requirement to only allow non combustible piping when non water filled. This contradicts section 8.15.1.2.1 which allows minimal combustible loading. Once could infer that a space above an acoustical ceiling containing PVC piping for Drain and Waste should be protected.


9.2.3* Exterior Projections.

9.2.3.1

Unless the requirements of 9.2.3.2, 9.2.3.3, or 9.2.3.4 are met, sprinklers shall be installed under exteriorprojections exceeding 4 ft (1.2 m) in width.

9.2.3.2*

Sprinklers shall be permitted to be omitted where the exterior canopies, roofs, porte-cocheres, balconies,decks, and similar projections are constructed with materials that are noncombustible, limited-combustible,or fire retardant–treated wood as defined in NFPA 703, or where the projections are constructed utilizing anoncombustible frame, limited-combustibles, or fire retardant–treated wood with an inherently flame-resistant fabric overlay as demonstrated by Test Method 2 in accordance with NFPA 701.

9.2.3.2 3

Sprinklers shall be permitted to be omitted from below the exterior projections of combustible construction,provided the exposed finish material on the exterior projections are noncombustible, limited-combustible, orfire retardant–treated wood as defined in NFPA 703, and the exterior projections contain only sprinkleredconcealed spaces or any of the following unsprinklered combustible concealed spaces:

(1) Combustible concealed spaces filled entirely with noncombustible insulation

(2) Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilings are directly

attached to the bottom of solid wood joists so as to create enclosed joist spaces 160 ft3 (4.5 m3) orless in volume, including space below insulation that is laid directly on top or within the ceiling joists inan otherwise sprinklered attic [see 19.3.3.1.4(4)(d)]

(3) Concealed spaces over isolated small exterior projections not exceeding 55 ft2 (5.1 m2) in area

9.2.3.3 4

Sprinklers shall be permitted to be omitted from an exterior exit corridorwhere corridor where the exteriorwall of the corridor is at least 50 percent open and where the corridor is entirely of noncombustibleconstruction.

9.2.3.5

Sprinklers shall be installed under all exterior projections greater than 2 ft (600 mm) where combustiblesare stored.


During the editing / restructuring of the standard, the charging sentence for the sprinklering of Exterior Projections was omitted. No public input called for this and there is no substantiation for the omission. Consequently, the missing text should be re-inserted.

Additionally, while the width of overhang was debated, no action was proposed to delete the requirement for sprinklers under overhangs with storage below. This text too should be re-inserted.

In contract with the actions recorded in FR-743, according to my notes, at the 1st Draft Meeting, in response to PI-470, it was agreed to just revise the Annex text by deleting the last sentence, because it was considered to be a building code issue, so NFPA should not be making such recommendations either way. However, in the 1st Draft Report the first sentence has also been lost. Neither the first sentance nor the last was moved to the body of the standard as per FR-743. With this, the explanation that cars that are temporarily parked do not need to be considered as storage has been lost. Without that text there is a conflict. One part of the standard says that sprinklers are not required under porte-cocheres and another area says storage (ie. parked cars) needs sprinkler protection.

Related Item


122 of 518 10/27/2017, 7:12 AM

FR-743




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: During the editing / restructuring of the standard, the charging sentence for the sprinklering ofExterior Projections was omitted. No public input called for this and there is no substantiation for theomission. Consequently, the missing text should be re-inserted.

Additionally, while the width of overhang was debated, no action was proposed to delete therequirement for sprinklers under overhangs with storage below. This text too should be re-inserted.

In contract with the actions recorded in FR-743, according to my notes, at the 1st Draft Meeting, inresponse to PI-470, it was agreed to just revise the Annex text by deleting the last sentence,because it was considered to be a building code issue, so NFPA should not be making suchrecommendations either way. However, in the 1st Draft Report the first sentence has also been lost.Neither the first sentance nor the last was moved to the body of the standard as per FR-743. Withthis, the explanation that cars that are temporarily parked do not need to be considered as storagehas been lost. Without that text there is a conflict. One part of the standard says that sprinklers arenot required under porte-cocheres and another area says storage (ie. parked cars) needs sprinklerprotection.

New annex: When the Annex material on loading dock protection with a dry pendent sprinkler turnedto 45° was deleted, the explanatory text with examples of exterior projections was also deleted. Thistext should be re-inserted.

Changes to existing annex: As stated in L. Keeping's & T. Victor’s negative ballots, the firstsentence of this annex note (Vehicles that are temporarily parked are not considered storage) wasnot intended to be deleted. At first draft meeting the committee agreed only to delete that lastsentence. The first sentence needs to be included in this annex note as without this sentence thereis a conflict - one part of the standard states that sprinklers are not required under drive-in bankwindows or porte-cocheres however another section says where there is storage - sprinklers arerequired. Without the first sentence (vehicles that are temporary parked is not considered storage),cars parked for a short time under porte-cocheres could be considered as storage and sprinklerprotection would be required. This was not the intent of the committee or FR 743.


123 of 518 10/27/2017, 7:12 AM


A.9.2.3.1

Some balconies or decks do not project outsde the plane of the exterior wall of the bulding. They will beenclosed on 3 sides and open to the outside on the one side.


PI No. 397 was an attempt to define a balcony. Since the term balcony is used in the section for "exterior projections", many AHJ's will only consider a projection a balcony if it is open on 3 sides. Many times the balcony will be adjacent to the surrounding unit except for the one exterior side. This balcony does not project from the exterior plane of the building but should not require protection as long as the combustibility requirements are met.

Related Item

PI No. 397


Submitter Full Name: Peter Schwab

Organization: Wayne Automatic Fire Sprinkler

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:








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125 of 518 10/27/2017, 7:12 AM


9.2.3.1.1

This section only applies to porte cocheres that are directly attached to the building.


See PI No. 395. The committee statement was "Building codes decide if this is a separate structure. This standard only deals with porte cocheres that are directly attached to the building. This comment attempts to clarify that committee statement.

Related Item

PI No. 395




Street Address:

City:

State:

Zip:


Committee Statement


Resolution: The current requirement is applicable to both attached and unattached porte cocheres.


126 of 518 10/27/2017, 7:12 AM


9.2.6

Sprinklers shall not be required in electrical equipment rooms where all of the following conditions are met:

(1) The room is dedicated to electrical equipment only.

(2) Only dry-type or liquid-type with listed K-class fluid electrical equipment is used.

(3) Equipment is installed in a 2-hour fire-rated enclosure including protection for penetrations.

(4) No storage is permitted to be stored in the room.


Adopted changes to the 2018 Canadian Electrical Code will permit liquid filled electrical equipment to be installed within buildings but outside of electrical equipment vaults. Subrule 5 of Rule 26-012 will now permit the following:

26-012 Dielectric liquid-filled equipment — Indoors (see Appendices B and G)(1) Except as permitted in Subrule (5), dielectric liquid-filled electrical equipment containing more than 23 L of liquid in one tank, or more than 69 L in a group of tanks, shall be located in an electrical equipment vault.…(5) Dielectric liquid-filled equipment located indoors with more than 23 L of liquid in one tank, or more than 69 L in a group of tanks shall be permitted to be installed in accordance with Subrule (2) provided the following additional conditions are met:

(a) the equipment is protected from mechanical damage either by location or guarding;(b) the equipment contains a non-propagating liquid having a flash point of 275 °C or higher;(c) for equipment other than transformers, a means of absorbing gases generated by arcing inside the case, or a pressure relief device is provided;(d) for transformers with ratings exceeding 25 kV•A at 25 Hz or exceeding 37.5 kV•A at 60 Hz, a means of absorbing gases generated by arcing inside the tank, or a pressure relief vent is provided; and(e) where transformers referred to in item (d) are rated at 15 000 V or more, the service room is accessible only to authorized persons.

The problem to be resolved is that electrical rooms (not vaults) which were not previously permitted by the CEC to contain liquid filled equipment will now contain K-class equipment (subject to the requirements above). Some electrical AHJs still will not accept sprinklers within electrical rooms whereas the plumbing AHJs still require compliance with NFPA 13. Currently NFPA 13 does not recognize the differing fire hazards between the different types of liquid dielectrics, and does not permit this type of 'less-flammable' or 'non-propagating' liquid dielectric fluid within an unsprinklered electrical room.

Listed IEC K-Class fluids are required to have a fire point above 300°C and a net heat release of less than 42 MJ/kg as compared to conventional mineral oil fluids which have a fire point of ~170°C .

Factory Mutual has reviewed failure history of these types of devices and found no examples of fire resulting from fluid release from the device (FMRC J.I. 0003014446, November 2002). Factory Mutual Datasheet 5-4 does not require fire protection for transformers containing approved less-flammable liquids provided that they are located within rooms separated from the remainder of the building with a 1 hour fire separation.

NFPA 70 recognizes less flammable liquids as requiring less fire protection than conventional oil filled transformers.

Related Item

9.2.6



127 of 518 10/27/2017, 7:12 AM

Submitter Full Name: Erik Watson-Hurthig

Organization: Eriksberg Engineering Ltd

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: Adopted changes to the 2018 Canadian Electrical Code will permit liquid filled electrical equipmentto be installed within buildings but outside of electrical equipment vaults. Subrule 5 of Rule 26-012will now permit the following:

26-012 Dielectric liquid-filled equipment — Indoors (see Appendices B and G)

(1) Except as permitted in Subrule (5), dielectric liquid-filled electrical equipment containing morethan 23 L of liquid in one tank, or more than 69 L in a group of tanks, shall be located in an electricalequipment vault.

…

(5) Dielectric liquid-filled equipment located indoors with more than 23 L of liquid in one tank, ormore than 69 L in a group of tanks shall be permitted to be installed in accordance with Subrule (2)provided the following additional conditions are met:

(a) the equipment is protected from mechanical damage either by location or guarding;

(b) the equipment contains a non-propagating liquid having a flash point of 275 °C or higher;

(c) for equipment other than transformers, a means of absorbing gases generated by arcing insidethe case, or a pressure relief device is provided;

(d) for transformers with ratings exceeding 25 kV•A at 25 Hz or exceeding 37.5 kV•A at 60 Hz, ameans of absorbing gases generated by arcing inside the tank, or a pressure relief vent is provided;and

(e) where transformers referred to in item (d) are rated at 15 000 V or more, the service room isaccessible only to authorized persons.

The problem to be resolved is that electrical rooms (not vaults) which were not previously permittedby the CEC to contain liquid filled equipment will now contain K-class equipment (subject to therequirements above). Some electrical AHJs still will not accept sprinklers within electrical roomswhereas the plumbing AHJs still require compliance with NFPA 13. Currently NFPA 13 does notrecognize the differing fire hazards between the different types of liquid dielectrics, and does notpermit this type of 'less-flammable' or 'non-propagating' liquid dielectric fluid within an unsprinkleredelectrical room.

Listed IEC K-Class fluids are required to have a fire point above 300°C and a net heat release ofless than 42 MJ/kg as compared to conventional mineral oil fluids which have a fire point of ~170°C .

Factory Mutual has reviewed failure history of these types of devices and found no examples of fireresulting from fluid release from the device (FMRC J.I. 0003014446, November 2002). FactoryMutual Datasheet 5-4 does not require fire protection for transformers containing approved less-flammable liquids provided that they are located within rooms separated from the remainder of thebuilding with a 1 hour fire separation.

NFPA 70 recognizes less flammable liquids as requiring less fire protection than conventional oilfilled transformers.

New annex: There is a common misconception that sprinklers and sprinkler piping is not permitted inelectrical rooms or is not permitted to pass through electrical areas. This is untrue. The NEC permitsboth situations under certain conditions. This annex note attempts to clarify these requirements.


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129 of 518 10/27/2017, 7:12 AM


9.2.7.1*

Sprinklers shall be permitted to be omitted above cloud ceilings where all of the following apply:

(1)

(2) The width of the gap and the maximum sprinkler protection area shall meet Table 9.2.7.1.

(3) The requirements of 9.2.7.2 are met.

(4) Spaces above cloud ceilings shall contain either noncombustible or limited combustible constructionwith minimal combustible loading.

Table 9.2.7.1 Maximum Sprinkler Protection Area Based on Ceiling Cloud Width and Opening Width

Ceiling Cloud —Minimum WidthDimension (ft)

Maximum Area (ft2) —Opening Width ≤0.5 in./

ft of Ceiling Height

Maximum Area (ft2) —Opening Width ≤0.75 in./


Maximum Area (ft2) —Opening Width ≤1 in./ ft

of Ceiling Height

2–<2.5 175 70 NP

2.5–4 225 120 70

>4 225 150 150



Cloud_Ceiling_proposed_changes.pdf Proposed Cloud Ceiling Section - Entire


This proposed comment will specifically require that the spaces above cloud ceilings be of noncombustible or limited combustible construction. This was, we believe the intent of the rules from the beginning, however this was not directly stated. Additionally, this comment and related comments will divorce the cloud ceiling rules from those of concealed spaces without making any substantial technical changes. The committee has been divided upon whether the spaces above cloud ceilings are in fact a type of concealed space. This proposal along with related proposals and FR 715 will separate these ceiling features from concealed spaces.and by adding the new subsection (4), the concerns of those who believe these features should be under the concealed space section have been addressed.

There are related proposal to delete section 9.2.1.1.3 (as these requirements are now in this section) and to add a deflector distance of 1 - 12 inches below the cloud.









Related Item

* The combined total area of the openings around the cloud are less than or equal to 20 percent of thearea of the ceiling, construction feature, or plane used to determine the boundaries of thecompartment.


130 of 518 10/27/2017, 7:12 AM

FR-715

FR-716

FR-718

PI-162





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: This proposed comment will specifically require that the spaces above cloud ceilings be ofnoncombustible or limited combustible construction. This was, we believe the intent of the rules fromthe beginning, however this was not directly stated. Additionally, this comment and related commentswill divorce the cloud ceiling rules from those of concealed spaces without making any substantialtechnical changes. The committee has been divided upon whether the spaces above cloud ceilingsare in fact a type of concealed space. This proposal along with related proposals and FR 715 willseparate these ceiling features from concealed spaces.and by adding the new subsection (4), theconcerns of those who believe these features should be under the concealed space section havebeen addressed.



131 of 518 10/27/2017, 7:12 AM

9.2.7 Cloud Ceilings

9.2.7.1 Sprinklers shall be permitted to be omitted above cloud ceilings where both all of the following

apply:

1. * The openings around the cloud and the maximum sprinkler protection area meet the

requirements of 8.15.1.2.1.2 and Table 8.15.24.1 combined total area of the openings around

the cloud are less than or equal to 20 percent of the area of the ceiling, construction feature, or

plane used to determine the boundaries of the compartment.

2. The width of the gap and the maximum sprinkler protection area shall meet Table 9.2.7.1 .

3. The requirements of 9.2.7.2 are met.

4. Spaces above cloud ceilings shall contain either noncombustible or limited combustible

construction with minimal combustible loading. (Note: New PC to add Similar language to

8.15.1.2.1 (new 9.2.1.1))


Ceiling Cloud — Minimum Width Dimension (ft)

Maximum Area (ft 2 ) — Opening Width ≤0.5 in./ ft

of Ceiling Height

Maximum Area (ft 2 ) — Opening Width ≤0.75 in./


Maximum Area (ft 2 ) — Opening Width ≤1 in./ ft

of Ceiling Height

2–<2.5 175 70 NP

2.5–4 225 120 70

>4 225 150 150

(Note - above changed by FR-715)

9.2.7.2 All sprinklers shall be quick response standard spray or extended coverage pendent or upright

sprinklers.

9.2.7.2.1 Sprinklers shall be installed with deflectors installed within 1 to 12 of the cloud ceiling. (Note –

New PC to clarify location of deflector.)

9.2.7.2.1 Where extended coverage sprinklers are used, the maximum distance between sprinklers shall

not exceed 16 ft (4.9 m). (Note – deleted by FR-716)

9.2.7.2.2 Maximum cloud ceiling height shall not exceed 20 ft (6.1 m).

9.2.7.2.3 Maximum spacing shall not exceed the maximum requirements of Table 8.6.2.2.1(a) for light

hazard and Table 8.6.2.2.1(b) for ordinary hazard.

9.2.7.2.3.1 Where extended coverage sprinklers are used, the maximum distance between sprinklers

shall not exceed 16 ft (4.9 m). (Note – added by FR-718)

9.2.7.2.4 Cloud ceilings shall be of smooth ceiling construction.

9.2.7.2.5* For irregular shaped ceiling clouds (not rectangular) the minimum width dimension shall be

the smallest width dimension of the cloud and for the gap shall be the greatest dimension between

clouds or adjacent walls as applicable.

9.2.1.1.3 The space above cloud ceilings meeting the requirements in 8.15.24.1 and having openings

with a combined total area of not more than 20 percent of the ceiling, construction feature, or plane

used to determine the boundaries of the concealed space shall be permitted.

(Note: New PC to delete 9.2.1.1.3 under concealed spaces not requiring sprinkler protection.)


9.2.7.2.1

Sprinklers shall be installed with deflectors installed 1 to 12 in. below the cloud ceiling.



Cloud_Ceiling_proposed_changes.pdf This document shows all changes to Cloud ceiling sections


This proposal will specifically state that the sprinklers used below a ceiling cloud must be installed with deflectors 1 - 12 inches below the cloud ceiling.



Public Comment No. 93-NFPA 13-2017 [Section No. 9.2.7.1] both related to Cloud ceilings



Related Item

FR-715

FR-716

FR-718

PI-162





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: This proposed comment will specifically require that the spaces above cloud ceilings be ofnoncombustible or limited combustible construction. This was, we believe the intent of the rules fromthe beginning, however this was not directly stated. Additionally, this comment and related commentswill divorce the cloud ceiling rules from those of concealed spaces without making any substantialtechnical changes. The committee has been divided upon whether the spaces above cloud ceilingsare in fact a type of concealed space. This proposal along with related proposals and FR 715 will


132 of 518 10/27/2017, 7:12 AM

separate these ceiling features from concealed spaces.and by adding the new subsection (4), theconcerns of those who believe these features should be under the concealed space section havebeen addressed.



133 of 518 10/27/2017, 7:12 AM

9.2.7 Cloud Ceilings

9.2.7.1 Sprinklers shall be permitted to be omitted above cloud ceilings where both all of the following

apply:

1. * The openings around the cloud and the maximum sprinkler protection area meet the

requirements of 8.15.1.2.1.2 and Table 8.15.24.1 combined total area of the openings around

the cloud are less than or equal to 20 percent of the area of the ceiling, construction feature, or

plane used to determine the boundaries of the compartment.

2. The width of the gap and the maximum sprinkler protection area shall meet Table 9.2.7.1 .

3. The requirements of 9.2.7.2 are met.

4. Spaces above cloud ceilings shall contain either noncombustible or limited combustible

construction with minimal combustible loading. (Note: New PC to add Similar language to

8.15.1.2.1 (new 9.2.1.1))


Ceiling Cloud — Minimum Width Dimension (ft)

Maximum Area (ft 2 ) — Opening Width ≤0.5 in./ ft

of Ceiling Height

Maximum Area (ft 2 ) — Opening Width ≤0.75 in./


Maximum Area (ft 2 ) — Opening Width ≤1 in./ ft

of Ceiling Height

2–<2.5 175 70 NP

2.5–4 225 120 70

>4 225 150 150

(Note - above changed by FR-715)

9.2.7.2 All sprinklers shall be quick response standard spray or extended coverage pendent or upright

sprinklers.

9.2.7.2.1 Sprinklers shall be installed with deflectors installed within 1 to 12 of the cloud ceiling. (Note –

New PC to clarify location of deflector.)

9.2.7.2.1 Where extended coverage sprinklers are used, the maximum distance between sprinklers shall

not exceed 16 ft (4.9 m). (Note – deleted by FR-716)

9.2.7.2.2 Maximum cloud ceiling height shall not exceed 20 ft (6.1 m).

9.2.7.2.3 Maximum spacing shall not exceed the maximum requirements of Table 8.6.2.2.1(a) for light

hazard and Table 8.6.2.2.1(b) for ordinary hazard.

9.2.7.2.3.1 Where extended coverage sprinklers are used, the maximum distance between sprinklers

shall not exceed 16 ft (4.9 m). (Note – added by FR-718)

9.2.7.2.4 Cloud ceilings shall be of smooth ceiling construction.

9.2.7.2.5* For irregular shaped ceiling clouds (not rectangular) the minimum width dimension shall be

the smallest width dimension of the cloud and for the gap shall be the greatest dimension between

clouds or adjacent walls as applicable.

9.2.1.1.3 The space above cloud ceilings meeting the requirements in 8.15.24.1 and having openings

with a combined total area of not more than 20 percent of the ceiling, construction feature, or plane

used to determine the boundaries of the concealed space shall be permitted.

(Note: New PC to delete 9.2.1.1.3 under concealed spaces not requiring sprinkler protection.)


9.2.17 Skylights

9.2.17.1 Sprinklers shall be permitted to be omitted from skylights which can’t open or have open side

ventilation and not exceeding 32 ft 2 (3.0 m 2 ) in area, regardless of hazard classification, that areseparated by at least 10 ft (3.0 m) horizontally from any other unprotected skylight or unprotected ceilingpocket.

9.2.17.2 When a sprinkler is installed directly beneath a skylight which can’t open or have open side

ventilation and not exceeding 32 ft 2 (3.0 m 2 ), the distance to the ceiling shall be measured to the plane ofthe ceiling as if the skylight was not present.



Smoke_Hatch_Tri_Arch_Louver_Dome2.1465344793316.jpg Open Skylight / Heat Vent

alum_sf_louv.1465344758698.jpg Louvered Skylight with open sides

Skylight_Closed.1465399937128.jpg Closed Skylight


The new sections proposed for the 2019 are additional clarifications being added to a clarification added in 2016. The proposed new sections will provide needed guidance to match the testing done in 2002.

In 2016 a new section 8.5.7.1.1 was added and the substantiation was simply to provide clarification. There was no testing or research associated with the proposal to support the new section. The proposal’s only substantiation was to provide clarity that sprinklers are not required to comply with the maximum allowable distances below the ceiling. The new sections proposed for 2019 are also needed in the same way, to provide clarification.

The section 8.5.7 added in 2002 was based on testing of sprinkler activation under obstructed construction. The objective of the 2002 additions was to eliminate the need for additional sprinklers up inside a skylight. It must be noted that the construction used in the testing used to develop the new sections in 2002 did not have any openings or ventilation in the deck or pockets.

Back in 2002 the new Section 8.5.7 permits the omission of additional sprinklers up in skylights was added to the 2002 edition. It was the result of committee action which rejected ROP proposal 13-108 and ROC accepted comment 13-57 (Log #96). The discussion and focus of this proposal and comment was to establish that additional sprinklers were needed up inside the skylight open ceiling pocket. There was no specific testing or research data referenced or associated with the section added in ROC 13-57 (Log #96) for the 2002 edition. The only possible data referenced is in ROC 15-55 (Log #130) which address the effects of ceiling pocket size limits for collecting heat within obstructed construction. The original research addresses the effects of ceiling pocket, not the effect of sprinkler heat elements being further down from the ceiling that the maximum allowable limits. The section added in the 2002 edition did not eliminate the requirements of sprinklers being more than the maximum allowable distance below the ceiling. Sprinklers were not permitted to exceed the maximum distances below the ceiling. Even within obstruction construction sprinklers are required to be no more than 22” below the deck. The statements, recommendations, substantiations and committee action used in the development of the new section in the 2002 edition do not address sprinkler distance below a surface for heat collection.

The revisions I have proposed is specific to skylights which have vented openings or may be completely open to the sky in the event of a fire. A closed skylight ceiling pocket is not affected by this proposed revision. A ventilated skylight or an opened skylight will not collect heat. Heat is not trapped but rather released. These skylights are often also “heat vents” designed to open automatically and therefore let out the very heat needed to activate a sprinkler. It seems counter intuitive to expect sprinklers to operate effectively under an open hole in the roof.


134 of 518 10/27/2017, 7:12 AM

The limitations created by the new proposed additions are compliant with the testing done to create the sections in 2002.

Related Item





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:


Resolution: SR-462-NFPA 13-2017 For the purpose of allowing increased flexibility of sprinkler installation withinskylights, the submitter is looking to allow for larger vertical sprinkler installation distances below theskylight than what is indicated for flat ceilings when the size of the skylight is greater than 32 sq ft,but requiring that the sprinkler must also be at least 8 in. above the lower ceiling area of the skylight.Supporting information for this proposed change was not submitted. The Task Group would agreethat this language could potentially apply to skylights that are limited to 32 sq ft in area, but feel thatallowing this for skylights of unlimited size and unlimited depth would need supporting informationbefore it can be considered.

Statement: The new sections proposed for the 2019 are additional clarifications being added to a clarificationadded in 2016. The proposed new sections will provide needed guidance to match the testing donein 2002.

In 2016 a new section 8.5.7.1.1 was added and the substantiation was simply to provide clarification.There was no testing or research associated with the proposal to support the new section. Theproposal’s only substantiation was to provide clarity that sprinklers are not required to comply withthe maximum allowable distances below the ceiling. The new sections proposed for 2019 are alsoneeded in the same way, to provide clarification.

The section 8.5.7 added in 2002 was based on testing of sprinkler activation under obstructedconstruction. The objective of the 2002 additions was to eliminate the need for additional sprinklersup inside a skylight. It must be noted that the construction used in the testing used to develop thenew sections in 2002 did not have any openings or ventilation in the deck or pockets.

Back in 2002 the new Section 8.5.7 permits the omission of additional sprinklers up in skylights wasadded to the 2002 edition. It was the result of committee action which rejected ROP proposal 13-108and ROC accepted comment 13-57 (Log #96). The discussion and focus of this proposal andcomment was to establish that additional sprinklers were needed up inside the skylight open ceilingpocket. There was no specific testing or research data referenced or associated with the sectionadded in ROC 13-57 (Log #96) for the 2002 edition. The only possible data referenced is in ROC15-55 (Log #130) which address the effects of ceiling pocket size limits for collecting heat withinobstructed construction. The original research addresses the effects of ceiling pocket, not the effectof sprinkler heat elements being further down from the ceiling that the maximum allowable limits. Thesection added in the 2002 edition did not eliminate the requirements of sprinklers being more thanthe maximum allowable distance below the ceiling. Sprinklers were not permitted to exceed themaximum distances below the ceiling. Even within obstruction construction sprinklers are required tobe no more than 22” below the deck. The statements, recommendations, substantiations andcommittee action used in the development of the new section in the 2002 edition do not addresssprinkler distance below a surface for heat collection.


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The revisions I have proposed is specific to skylights which have vented openings or may becompletely open to the sky in the event of a fire. A closed skylight ceiling pocket is not affected bythis proposed revision. A ventilated skylight or an opened skylight will not collect heat. Heat is nottrapped but rather released. These skylights are often also “heat vents” designed to openautomatically and therefore let out the very heat needed to activate a sprinkler. It seems counterintuitive to expect sprinklers to operate effectively under an open hole in the roof.

The limitations created by the new proposed additions are compliant with the testing done to createthe sections in 2002.


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9.3.6.1

Sidewall spray sprinklers shall be installed at the bottom of each elevator hoistway not more than 2 ft (600mm) above the floor of the pit.


This comment seeks to return to language of the 2016 edition of NFPA 13. Upon review of available documentation, the NFSA E&S committee sees no technical justification for removing the requirement to install sprinklers in the elevator pit. Sprinklers need to be required at the bottom of elevator hoistways.

Note: Subsequent sections need to renumbered.



Public Comment No. 90-NFPA 13-2017 [New Section after 9.3.6]

Related Item

FR-709

FR-708

FR-710





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:


Resolution: SR-428-NFPA 13-2017 Elevators are routinely utilized by emergency crews to provide emergencyservices for the facility. Activation of a sprinkler causes the elevator to stop and trapping crews inthe elevator is not desires. If the car enclosure does not meet the requirements of ASME A17.1,sprinklers will be required at the top of the hoistway regardless if the elevator is passenger orfreight.

Statement: To be consistent with the elevator associated spaces throughout this section. To indicate that allfreight elevators (traction and hydraulic types) must have sprinkler protection at their top of hoistway(the term "freight elevator" is specifically indicated to help clarify that if the elevator is not passengerit is freight as defined in the A17.1 elevator safety code). To clarify that storage of materialsunrelated to elevator equipment is not allowed for any elevator.

New 9.3.6.1: This comment seeks to return to language of the 2016 edition of NFPA 13. Upon


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review of available documentation, the NFSA E&S committee sees no technical justification forremoving the requirement to install sprinklers in the elevator pit. Sprinklers need to be required atthe bottom of elevator hoistways.


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9.3.6.2

The sprinkler required at the bottom of the elevator hoistway by 9.3.6.1 shall not be required for enclosed,noncombustible elevator shafts that do not contain combustible hydraulic fluids.


This comment is related to PC-89 and seeks to return to language of the 2016 edition of NFPA 13. Upon review of available documentation, the NFSA E&S committee sees no technical justification for removing the requirement to install sprinklers in the elevator pit. Sprinklers need to be required at the bottom of elevator hoistways, however this sprinklers should not be required for enclosed, noncombustible elevator shafts that do not contain combustible hydraulic fluids.

Note: Subsequent sections need to renumbered.



Public Comment No. 89-NFPA 13-2017 [New Section after 9.3.6]

Related Item

FR-710

FR-709

FR-708





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:





139 of 518 10/27/2017, 7:12 AM

New 9.3.6.1: This comment seeks to return to language of the 2016 edition of NFPA 13. Uponreview of available documentation, the NFSA E&S committee sees no technical justification forremoving the requirement to install sprinklers in the elevator pit. Sprinklers need to be required atthe bottom of elevator hoistways.


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9.3.6 Elevator Hoistways and Machine Rooms, Machinery Spaces, Control Rooms, Control Spaces andHoistways .

9.3.6.1

Automatic fire sprinklers shall not be required in elevator machine rooms, elevator machinery spaces,control rooms, control spaces, or hoistways of traction elevators installed in accordance with the applicableprovisions in NFPA 101, or the applicable building code, where all of the following conditions are met:

(1) The elevator machine room, machinery space, control room, control space, or hoistway of tractionelevator is dedicated to elevator equipment only.

(2) The elevator machine room, machine room, machinery space, control room , or control space orhoistway of traction elevators is protected by smoke detectors, or other automatic fire detection,installed in accordance with NFPA 72.

(3) The elevator machine room, machinery space, control room, control space, or hoistway of tractionelevators is separated from the remainder of the building by walls and floor/ceiling or roof/ceilingassemblies having a fire resistance rating of not less than that specified by the applicable buildingcode.

(4) No materials unrelated to elevator equipment are permitted to be stored in elevator machine rooms,machinery spaces, control rooms, control spaces, or hoistways of traction elevators .

(5) The elevator machinery is not of the hydraulic type.

9.3.6.2*

Automatic Where required, automatic sprinklers in elevator machine rooms, elevator machinery spaces, orat the tops of hoistways shall be of ordinary - or intermediate-temperature rating.

9.3.6.3*

Upright, pendent, or sidewall spray sprinklers shall be installed at the top of hydraulic and traction freightelevator hoistways.

9.3.6.4

The sprinkler required at the top of the elevator hoistway by 9.3.6.3 shall not be required where thehoistway for passenger elevators is noncombustible or limited-combustible and the car enclosure materialsmeet the requirements of ASME A17.1, Safety Code for Elevators and Escalators.

9.3.6.5 Combustible Suspension in Elevators.

9.3.6.5.1

Sprinklers shall be installed at the top and bottom of elevator hoistways where elevators utilize combustiblesuspension means such as noncircular elastomeric-coated or polyurethane-coated steel belts.

9.3.6.5.2

The sprinklers in the elevator hoistway shall not be required where the suspension means provide not lessthan an FT-1 rating when tested to the vertical burn test requirements of UL 2556, Wire and Cable TestMethods (Tri-national standard, with NMX-J-556-ANCE and CSA 22.2 No. 2556).

9.3.6.5.3

The suspension means shall not continue to burn for more than 60 seconds nor shall the indicator flag beburned more than 25 percent.


To be consistent with the elevator associated spaces throughout this section.To indicate that all freight elevators (traction and hydraulic types) must have sprinkler protection at their top of


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hoistway (the term "freight elevator" is specifically indicated to help clarify that if the elevator is not passenger it is freight as defined in the A17.1 elevator safety code)To clarify that storage of materials unrelated to elevator equipment is not allowed for any elevator.

Related Item

PI-217


Submitter Full Name: Sagiv Weiss-Ishai

Organization: San Francisco Fire Department

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:




New 9.3.6.1: This comment seeks to return to language of the 2016 edition of NFPA 13. Uponreview of available documentation, the NFSA E&S committee sees no technical justification forremoving the requirement to install sprinklers in the elevator pit. Sprinklers need to be required atthe bottom of elevator hoistways.


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9.3.16 Vestibules.

Sprinkler protection shall not be required within entrance vestibules of noncombustible and limited-

combustible construction that do not contain combustibles and are 150 ft2 (13.9 m2) or less in area.

A.9.3.16 Combustible mats or flooring is permitted within the vestibules.


Limited-Combustible needs to be included to allow gypsum to be used in the construction of the vestibule.

Mats, rugs, or similar non-slip surfaces need to be allowed within the vestibule enclosure.

Related Item

171




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:


Resolution: SR-429-NFPA 13-2017 Editorial.

Statement: Limited-Combustible needs to be included to allow gypsum to be used in the construction ofthe vestibule.

Mats, rugs, or similar non-slip surfaces need to be allowed within the vestibule enclosure.


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9.3.16 Vestibules.

Sprinkler protection shall not be required within entrance vestibules of noncombustible construction that

subject to freezing that do not contain combustibles and are 150 ft2 (13.9 m2) or less in area.


This language should be deleted. However, the statement for adding this to the standard focused mainly in regards to concerns of freezing.

Related Item

FR-658




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: Protection of a small vestibule is not necessary if no combustibles are present whether subjectto freezing or not.


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9.3.16 Vestibules.

Sprinkler protection shall not be required within entrance vestibules of noncombustible construction that do

not contain combustibles and are 150 ft 2 (13.9 m 2 ) or less in area.


FR-658 is not a good change to the standard and should be deleted. Sprinkler protection needs to be required in all vestibules regardless of the intended use or of the difficulty of providing sprinkler protection. Vestibules, even small ones, are often part of the path of egress and sprinkler protection needs to be provided, I understand the intent of this revision; to allow the removal of sprinklers because sprinkler piping in some vestibules is difficult to route and more susceptible to freezing than in other heated areas of the building, however this change is misguided. While it may be more difficult to provide sprinkler protection and freeze protection in some vestibules it can be done. A 150-sq. ft. vestibule is not a small space, and the probability of there being no combustibles in that space is remote, especially in retail spaces.

Related Item

FR-658





Street Address:

City:

State:

Zip:


Committee Statement


Resolution: Protection in a small vestibule is not necessary if no combustibles are present.


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9.3.17 Skylights.

9.3.17.1

Sprinklers shall be permitted to be omitted from skylights not exceeding 32 ft2 (3.0 m2) in area, regardlessof hazard classification, that are separated by at least 10 ft (3.0 m) horizontally from any other unprotectedskylight or unprotected ceiling pocket.

9.3.17.1.1

When a sprinkler is installed directly beneath a skylight not exceeding 32 ft2 (3.0 m2), the distance to theceiling shall be measured to the plane of the ceiling as if the skylight was not present.

9.3.17.2

Skylights not exceeding 32 ft2 (3.0 m2) shall be permitted to have a plastic cover.

9.3.17.3

The sprinkler deflector distances can be exceeded from the top of the skylight for skylights larger than 32ft2 (3.0 m2) in area.

9.3.17.3.1

The sprinklers within the skylight must be located at least 8 in. above the lower ceiling area of theskylight.


There are a lot of issues and controversies with aesthetics of sprinklers and piping in skylights. There is also an issue of freezing pipes within walls of skylights when extending above the roof line. Allowing the sprinkler deflector distances to be exceeded allows for flexibility when installing sprinklers in skylights greater than 32 sq. ft. (3 m2). Life safety or property protection will not be greatly affected.

Related Item

488




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: See PC #121 For the purpose of allowing increased flexibility of sprinkler installation within skylights,the submitter is looking to allow for larger vertical sprinkler installation distances below the skylightthan what is indicated for flat ceilings when the size of the skylight is greater than 32 sq ft, butrequiring that the sprinkler must also be at least 8 in. above the lower ceiling area of the skylight.


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Supporting information for this proposed change was not submitted. The Task Group would agreethat this language could potentially apply to skylights that are limited to 32 sq ft in area, but feel thatallowing this for skylights of unlimited size and unlimited depth would need supporting informationbefore it can be considered.


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9.4.2.5*


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The following practices shall be observed to provide sprinklers of other than ordinary-temperatureclassification unless other temperatures are determined or unless high-temperature sprinklers are usedthroughout, and temperature selection shall be in accordance with Table 9.4.2.5(a), Table 9.4.2.5(b), Table9.4.2.5(c), and Figure 9.4.2.5:

(1)

(2) Sprinklers located within 12 in. (300 mm) to one side or 30 in. (750 mm) above an uncovered steammain, heating coil, or radiator shall be of the intermediate-temperature classification.

(3) Sprinklers within 7 ft (2.1 m) of a low-pressure blowoff valve that discharges free in a large room shallbe of the high-temperature classification.

(4) Sprinklers under glass or plastic skylights exposed to the direct rays of the sun shall be of theintermediate-temperature classification.

(5) Sprinklers in an unventilated, concealed space, under an uninsulated roof, or in an unventilated atticshall be of the intermediate-temperature classification.

(6) Sprinklers in unventilated show windows having high-powered electric lights near the ceiling shall be ofthe intermediate-temperature classification.

(7) Sprinklers protecting commercial-type cooking equipment and ventilation systems shall be of the high-or extra high–temperature classification as determined by use of a temperature-measuring device.(See 8.9.6.)

(8) Sprinklers protecting residential areas installed near specific heat sources identified in Table 9.4.2.5(c)shall be installed in accordance with Table 9.4.2.5(c).

(9) Ordinary-temperature sprinklers located adjacent to a heating duct that discharges air that is less than100°F (38°C) are not required to be separated in accordance with Table 9.4.2.5(a) or Table 9.4.2.5(c).

(10) Sprinklers in walk-in type coolers and freezers with automatic defrosting shall be of the intermediate-temperature classification or higher.

(11) Sprinklers in closets containing ventless clothes dryers shall be of the intermediate-temperatureclassification or higher.

(12) Where the water temperature exceeds 100°F (37.8°C), intermediate or higher temperature– ratedsprinklers shall be used.

Table 9.4.2.5(a) Temperature Ratings of Sprinklers Based on Distance from Heat Sources

Type of HeatCondition

Ordinary-Temperature

Rating

Intermediate-Temperature

Rating

High-TemperatureRating

(1) Heatingducts

(a) AboveMore than 2 ft6 in. (750 mm)

2 ft 6 in. or less(750 mm)

(b) Side andbelow

More than 1 ft0 in. (300 mm)


(c) Diffuser

Any distanceexcept as shownunderIntermediate-TemperatureRating column

Downwarddischarge: Cylinderwith 1 ft 0 in.(300 mm) radiusfrom edge extending1 ft 0 in. below and2 ft 6 in. (750 mm)above

Horizontaldischarge:Semicylinder orcylinder with 2 ft6 in. (750 mm)

* Sprinklers in the high-temperature zone shall be of the high-temperature classification, and sprinklersin the intermediate-temperature zone shall be of the intermediate-temperature classification.


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Type of HeatCondition

Ordinary-Temperature

Rating

Intermediate-Temperature

Rating

High-TemperatureRating

radius in direction offlow extending 1 ft0 in. (300 mm)below and 2 ft 6 in.(750 mm) above

(2) Unit heaterand radiantheater

(a) Horizontaldischarge

Discharge side: 7 ft 0 in.(2.1 m) to 20 ft 0 in.(6.1 m) radius pie-shapedcylinder (see Figure8.3.2.5) extending 7 ft 0 in.(2.1 m) above and 2 ft 0(600 mm) in. below heater;also 7 ft 0 in. (2.1 m)radius cylinder more than7 ft 0 in. (2.1 m) above unitheater

7 ft 0 in. (2.1 m)radius cylinderextending 7 ft 0(2.1 m) in. aboveand 2 ft 0 (600 mm)in. below unit heater

(b) Verticaldownwarddischarge (forsprinklersbelow unitheater, seeFigure 8.3.2.5)

7 ft 0 in. (2.1 m) radiuscylinder extending upwardfrom an elevation 7 ft 0 in.(2.1 m) above unit heater

7 ft 0 in. (2.1 m)radius cylinderextending from thetop of the unit heaterto an elevation 7 ft0 in. (2.1 m) aboveunit heater

(3) Steammains(uncovered)

(a) AboveMore than 2 ft6 in. (750 mm)


(b) Side andbelow

More than 1 ft0 in. (300 mm)


(c) Blowoffvalve

More than 7 ft0 in. (2.1 m)

7 ft 0 in. or less(2.1 m)

Table 9.4.2.5(b) Temperature Ratings of Sprinklers in Specified Locations

LocationOrdinary-

TemperatureRating

Intermediate-Temperature RatingHigh-

TemperatureRating

Skylights Glass or plastic

Attics Do not use Ventilated or unventilated

Peaked roof: metal or thinboards, concealed or notconcealed, insulated oruninsulated

Ventilated Unventilated

Flat roof: metal, notconcealed

Ventilated orunventilated

Note: For uninsulated roof, climate andinsulated or uninsulated occupancy cannecessitate intermediate sprinklers.Check on job.

Flat roof: metal, concealed,insulated or uninsulated

Ventilated Unventilated

Show windows Ventilated Unventilated


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Note: A check of job condition by means of thermometers might be necessary.

Table 9.4.2.5(c) Temperature Ratings of Sprinklers in Specified Residential Areas

Heat Source

Minimum Distance from

Edge of Source to Ordinary-Temperature Sprinkler

Minimum Distance from

Edge of Source to Intermediate-Temperature Sprinkler

in. mm in. mm

Side of open or recessedfireplace

36 915 12 300

Front of recessed fireplace 60 1525 36 915

Coal- or wood-burning stove 42 1070 12 305

Kitchen range 18 460 9 230

Wall oven 18 460 9 230

Hot air flues 18 460 9 230

Uninsulated heat ducts 18 460 9 230

Uninsulated hot water pipes 12 305 6 155

Side of ceiling- or wall-mounted hot air diffusers

24 610 12 305

Front of wall-mounted hot airdiffusers

36 915 18 460

Hot water heater or furnace 6 155 3 75

Light fixture: 0 W–250 W 6 155 3 75

250 W–499 W 12 305 6 155

Figure 9.4.2.5 High-Temperature and Intermediate-Temperature Zones at Unit Heaters and RadiantHeaters.


Reference to sprinkler system water temperature was lost as part of the deletion of NFPA 13-2013, section 7.7.1 Closed Loop Systems. This section identified that intermediate or higher


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rated sprinklers are required where system water temperature exceeds 100°F (37.8°C).

Although originally part of the closed loop section, elevated system water temperature may be an issue in all types of systems and this provision should not be lost.

Related Item

PI-591

FR-891





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: The proposed language addressed situations where the water in the sprinkler pipe was heated bya heat source and therefore should be added to 9.4.2.5. There is no practical way of measuringtemperatures throughout the sprinkler pipe.


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9.4.3.2

Where quick-response sprinklers are installed, all sprinklers within a compartment shall be quick- of thefast response type unless otherwise permitted in 9.4.3.3, 9.4.3.4, or 9.4.3.5.


I believe the committee resolved this PI during the First Draft hastily. Based upon the original submitters substantiation, it is clear that PI 590 is valid and should be incorporated into NFPA 13. I am including Russ Fleming's original substantiation for PI 590 below:

"The requirement that all sprinklers in a compartment be of the quick-response type when quick-response sprinklers are installed dates back to the preparation of the 2002 edition of the standard, and is an example of how fairly minor changes can have larger unintended consequences. In a committee statement during the ROP stage (Proposal 13-195), dealing with the use of sprinklers in dry systems, the desirability was mentioned of having restrictions on sprinkler usage all in one place. As a result, a Comment 13-110 was submitted that proposed moving wording from 7-2.3.2.4 of the 1999 edition up to a general section in Chapter 5, which became 8.8.3.2 in the 2002 edition. In the 1999 edition, this dealt only with the conditions under which a reduction in design area could be taken with the use of quick response sprinklers. Since that time, however, it has raised questions as to whether, for example, quick response sprinklers can be used to protect hazards adjacent to those protected by ESFR sprinklers, even with compliance to the adjacent hazard criteria of 11.1.2/12.3. Ironically, committee action on Proposal 13-103 during the same 2002 cycle answered this question clearly when it was proposed that the draft curtain required between areas protected by ESFR and standard response sprinklers be mandated between ESFR and all other types of sprinklers. The committee rejected this proposal, and stated that the basis of the requirement was sensitivity, not type of sprinkler. This proposed action would correct an error that has existed since the 2002 edition by establishing a rational basis for the requirement, using the broader term of fast response. Section 8.5.5.3.3 as well as the system design criteria will sufficiently prevent the mixing of sprinkler types within a protected area."

Related Item

PI-590





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: If accepted the language would allow residential and quick response sprinklers to be located inthe same compartment.


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9.5.2.1.1

The protection area of coverage per sprinkler (As) shall be determined as follows:

(1) Along branch lines as follows:

(2) Determine distance between sprinklers (or to wall or obstruction in the case of the end sprinkleron the branch line) upstream and downstream

(3) Choose the larger of either twice the distance to the wall or the distance to the next sprinkler

(4) Define dimension as S

(5) Between branch lines as follows:

(6) Determine perpendicular distance

to the sprinkler on the

(a) to the adjacent branch line (or to a wall or obstruction in the case of the last branch line) on eachside of the branch line on which the subject sprinkler is positioned

(b) Choose the larger of either twice the distance to the wall or obstruction or the distance to the nextsprinkler

(c) Define dimension as L


Ignore underlined text since no new text but a TerraView issue.The TC resolution stated the dimension is sprinkler to sprinkler regardless of the location of the branch line. A change is required if this is the case since it is impossible for one to measure a perpendicular distance to the next sprinkler when the lay-out is not symmetrical. Serious consideration should be given before ignoring the historical application of a rectangle to the coverage of a sprinkler with perpendicular dimensions to the adjacent branch line. This approach correlates perfectly with the requirements for irregular walls where a 75% longer distance is allowed when measured to the irregular portion but the spacing is based on the shorter perpendicular distance to the wall. By applying the distance of the hypotenuse to the adjacent branch line (on a 10 x 15 spacing) will increase the density 25%. The rectangle methodology using perpendicular dimensions as applied by the industry is quite conservative and such a change is unwarranted.

Related Item

PI-112




Street Address:

City:

State:

Zip:


Committee Statement


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CommitteeAction:

Rejected

Resolution: Sprinkler spacing is based on the location of the sprinkler, not the branchline. The languageproposed does not take into consideration the position of armovers or other piping arrangementswhereby the sprinkler is not located on the branchline.


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Public Comment No. 123-NFPA 13-2017 [ Section No. 9.5.4.1.3 [Excluding any Sub-

Sections] ]

9.5.4.1.3 For ceilings that have insulation installed directly against underside of the ceiling or roofstructure, the deflector distance shall be measured from the bottom of the insulation and shall be inaccordance with 9.5.4.1.3. 1 2 or 9.5.4.1.3. 2 3 .

9.5.4.1.3.1

Insulation used to measure sprinkler deflector distance must be batt insulation or some type of insulationwhich will withstand a 3 pound per square foot uplift force.


This was previously submitted and resolved with the resolution substantiation being that "Submitter provides data that is unenforceable". This standard relies on all sorts of building requirements to work with the sprinkler system. Example of this is the requirement for fire rated walls when using the room design method or the omission of sprinklers in a fire rated elevator shaft. If other requirements are somehow enforceable then a this requirement is also enforceable.

A fire can have a strong uplift force and a surface of unknown strength may not remain intact long enough for timely sprinkler activation. If the heat element of a sprinkler is not close enough to whatever is collecting the heat it will not be as responsive as needed and its operation will be retarded allowing the fire to grow. The use of paper or other such weak materials should not be used to measure sprinkler deflector distances to. The standard should provided some minimum qualification for the surface needed for heat collection and sprinkler activation. The justification for the 3 pounds per square foot is from FM Global data sheet 2-0 which does qualify a performance requirement when a false ceiling is needed for heat collection.

Related Item





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: This was previously submitted and resolved with the resolution substantiation being that "Submitterprovides data that is unenforceable". This standard relies on all sorts of building requirements towork with the sprinkler system. Example of this is the requirement for fire rated walls when using theroom design method or the omission of sprinklers in a fire rated elevator shaft. If other requirementsare somehow enforceable then a this requirement is also enforceable.

A fire can have a strong uplift force and a surface of unknown strength may not remain intact longenough for timely sprinkler activation. If the heat element of a sprinkler is not close enough to


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whatever is collecting the heat it will not be as responsive as needed and its operation will beretarded allowing the fire to grow. The use of paper or other such weak materials should not be usedto measure sprinkler deflector distances to. The standard should provided some minimumqualification for the surface needed for heat collection and sprinkler activation. The justification forthe 3 pounds per square foot is from FM Global data sheet 2-0 which does qualify a performancerequirement when a false ceiling is needed for heat collection.


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9.5.5.3.1.2*

Sprinklers

shall be locatedlocated under obstructions shall comply with one of the following:

(1) Installed below the obstruction

and.

(2) Installed adjacent to the obstruction not more than

3 in3 in . (

75 mm75 mm ) from the outside edge of the obstruction.

See New Annex Figure A.9.5.5.3.1.2 attached



PC_to_2nd_draft_9.5.5.3.1.2.pdf New Figure A.9.5.5.3.1.2


This comment is to clarify the intent of this requirement. As currently written the language may be interpreted to mean that the sprinkler must be installed within 3 in to the inside or to the outside of the outer edge of the obstruction. This was not the intent of the committee. Sprinklers installed under obstructions are permitted to be positioned anywhere underneath the obstruction or the sprinkler may be positioned up to 3 in to the outside of the obstruction. This proposed changed seeks to clarify the original intent of the committee. An annex figure has also been submitted to clarify.

The new figure was added to the annex, however as an alternative it could be put into the body of the standard

Related Item

PI-149





Street Address:

City:

State:

Zip:


Committee Statement

Committee Accepted


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Action:


Statement: This comment is to clarify the intent of this requirement. As currently written the language may beinterpreted to mean that the sprinkler must be installed within 3 in to the inside or to the outside ofthe outer edge of the obstruction. This was not the intent of the committee. Sprinklers installed underobstructions are permitted to be positioned anywhere underneath the obstruction or the sprinklermay be positioned up to 3 in to the outside of the obstruction. This proposed changed seeks toclarify the original intent of the committee. An annex figure has also been submitted to clarify.

The new figure was added to the annex, however as an alternative it could be put into the body ofthe standard


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10.2.6.1.3.3*

Under a steeply pitched surface, the distance from the peak to the deflectors shall be permitted to beincreased to maintain a horizontal clearance of not less than 24 in. (600 mm) from other structural membersas indicated in Figure 10.2.6.1.3.3.

Figure 10.2.6.1.3.3 Horizontal Clearance for Sprinkler at Peak of Pitched Roof.

Delete existing figure 10.2.6.1.3.3 and replace with attached figure



PC_ro_2nd_draft_FR-924.pdf New Figure 10.2.6.1.3.3


This comment is in support of FR-924 but with modifications to the figure. The figure should show the 6 ft. minimum distance between sprinklers (to prevent cold soldering). See attached figure.

Related Item

FR-924





Street Address:

City:

State:

Zip:


161 of 518 10/27/2017, 7:12 AM


Committee Statement

CommitteeAction:



Statement: This comment is in support of FR-924 but with modifications to the figure. The figure should showthe 6 ft. minimum distance between sprinklers (to prevent cold soldering). See attached figure.


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10.2.6.1.3.3*

Under a steeply pitched surface, the distance from the peak to the deflectors shall be permitted to beincreased to maintain a horizontal clearance of not less than 24 in. (600 mm) from other structural membersas indicated in Figure 10.2.6.1.3.3.

Figure 10.2.6.1.3.3 Horizontal Clearance for Sprinkler at Peak of Pitched Roof.

In Figure 10.2.6.1.3.3, revise the illustration to show the two sprinklers further down the slope and add adimension to show the sprinkler spacing from the sprinkler at the peak to a sprinkler along the slope to be6 ft (1.8 m) apart.


The Committee Comment stated that the effects of cold soldering for sprinklers should not be considered when proper sprinkler spacing is provided along the slope of the ceiling. However, in the illustration, based on the 4 ft dimension, the sprinklers along the slope appear to be about 5 ft from the sprinkler at the peak.Therefore in the Figure, the two sprinklers should be shown farther down the slope, to more closely resemble a 6 ft (1.8 m) distance between sprinklers and a minimum of 6 ft. (1.8 m) dimension should be added to indicate the distance between sprinklers along the slope.

Related Item

FR-924




Street Address:

City:

State:

Zip:



163 of 518 10/27/2017, 7:12 AM

Committee Statement

CommitteeAction:



Statement: This comment is in support of FR-924 but with modifications to the figure. The figure should showthe 6 ft. minimum distance between sprinklers (to prevent cold soldering). See attached figure.


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10.2.7 Obstructions to Sprinkler Discharge (Standard Pendent and Upright Spray Sprinklers).

10.2.7.1 Performance Objective General .

10.2.7.1.1

Sprinklers shall be located so as to minimize obstructions to discharge as defined in 10.2.7 .2 and10.2.7.3 , or additional sprinklers shall be provided to ensure adequate coverage of the hazard.

10.2.7.1.2 Sprinklers shall be arranged to comply with one of the following sections:?

(1) 10.2.7.2 when the top of continuous and noncontinuous obstructions are above the deflector

(2) 10.2.7.3 when the top of continuous and noncontinuous obstructions are on the same plane or lessthan or equal to 18 inches below the deflector

(3) 10.2.7.4 when the top of continuous and noncontinuous obstructions are greater than 18 inches belowthe sprinkler deflector


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10.2.7.2 Obstructions Above the Sprinkler Deflector

10.2.7.2.1 *


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Sprinklers shall be arranged to comply with one of the following arrangements:

(1) Subsection 9.5.5.2, Table 10.2.7.2. 1.2 , and Figure 10.2.7.2. 1.2 (a) shall be followed.

(2) Sprinklers shall be permitted to be spaced on opposite sides of obstructions not exceeding 4 ft (1.2 m)in width, provided the distance from the centerline of the obstruction to the sprinklers does not exceedone-half the allowable distance permitted between sprinklers.

(3) Sprinklers shall be installed under fixed obstructions over 4 ft (1.2 m) wide for light andordinary hazard occupancies.

(4) Obstructions located against the wall and that are not over 30 in. (750 mm) in width shall be permittedto be protected in accordance with Figure 10.2.7.2. 1.2 (b).

(5) Obstructions located against the wall and that are not over 24 in. (600 mm) in width shall be permittedto be protected in accordance with Figure 10.2.7.2. 1.2 (c). The maximum distance between thesprinkler and the wall shall be measured from the sprinkler to the wall behind the obstruction and not tothe face of the obstruction.

Table 10.2.7.2. 1 .2 Positioning Positioning of Sprinklers to Avoid Obstructions to Discharge [StandardSpray Upright/Standard Spray Pendent (SSU/SSP)]

Distance from Sprinklers to

Side of Obstruction (A)

Maximum Allowable Distance of Deflector Above Bottom ofObstruction (B) [in. (mm)]

Less than 1 ft (300 mm) 0 (0)

1 ft (300 mm) to less than 1 ft 6 in.(450 mm)

21⁄2 (65)

1 ft 6 in. (450 mm) to less than 2 ft(600 mm)

31⁄2 (90)

2 ft (600 mm) to less than 2 ft 6 in.(750 mm)

51⁄2(140)

2 ft 6 (750 mm) in. to less than 3 ft(900 mm)

71⁄2 (190)

3 ft (900 mm) to less than 3 ft 6 in.(1.1 m)

91⁄2 (240)

3 ft 6 in. (1.1 m) to less than 4 ft(1.2 m)

12 (300)

4 ft (1.2 m) to less than 4 ft 6 in.(1.4 m)

14 (350)


161⁄2 (420)


18 (450)


20 (510)


24 (600)


30 (750)


35 (875)

For SI units, 1 in. = 25.4 mm; 1 ft = 0.3048 m.

Note: For A and B, refer to Figure 8.6.5.1.2(a).

Figure 10.2.7.2. 1.2 (a) Positioning of Sprinkler to Avoid Obstruction to Discharge (SSU/SSP).


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Figure 10.2.7.2. 1.2 (b) Obstruction Against Wall (SSU/SSP).

Figure 10.2.7.2. 1.2 (c) Obstructions Against Walls (SSU/SSP).


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10.2.7.2 3 Obstructions to Sprinkler Discharge Pattern Development.

10.2.7.2 3 .1 General.

10.2.7.

2

3 .1.

1

Continuous or noncontinuous obstructions less than or equal to 18 in. (450 mm) below the sprinklerdeflector that prevent the pattern from fully developing shall comply with 10.2.7.2 .

1 Sprinklers shall be installed under fixed obstructions over 4 ft (1.2 m) wide for light andordinary hazard occupancies.

10.2.7.2 3 .1.2

Regardless of the rules of 10.2.7.2 , solid continuous obstructions, where the top of the obstruction is levelwith or above the plane of the deflector, shall meet the applicable requirements of 10.2.7.1.2 .

10.2.7.2.1.3 * Minimum Distance from Obstructions.


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Unless the requirements of 10.2.7.2 3 .1.4 3 through 10.2.7.2 3 .1.9 8 are met, sprinklers shall bepositioned away from obstructions a minimum distance of three times the maximum dimension of theobstruction (e.g., structural members, pipe, columns, and fixtures) in accordance with Figure10.2.7.2 3 .1.3 2 (a) and Figure 10.2.7.2 3 .1.3 2 (b).

Figure 10.2.7.2 3 .1.3 2 (a) Minimum Distance from an Obstruction in the Vertical Orientation(SSU/SSP).

Figure 10.2.7.2 3 .1.3 2 (b) Minimum Distance from an Obstruction in the Horizontal Orientation(SSU/SSP).

(A)

The maximum clear distance required shall be 24 in. (600 mm).

(B)

The maximum clear distance shall not be applied to obstructions in the vertical orientation (e.g., columns).


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10.2.7.2 3 .1.4 3 *

For light and ordinary hazard occupancies, structural members only shall be considered when applying therequirements of 10.2.7.2 3 .1.3 2 .

10.2.7.2 3 .1.5 4

Sprinklers shall be permitted to be spaced on opposite sides of the obstruction not exceeding 4 ft (1.2 m) inwidth, where the distance from the centerline of the obstruction to the sprinklers does not exceed one-halfthe allowable distance between sprinklers.

10.2.7.2 3 .1.6 5

Sprinklers shall be permitted to be located one-half the distance between the obstructions where theobstruction consists of open trusses 20 in. (500 mm) or greater apart [24 in. (600 mm) on center], providedthat all truss members are not greater than 4 in. (100 mm) (nominal) in width.

10.2.7.2 3 .1.7 6

Sprinklers shall be permitted to be installed on the centerline of a truss or bar joist or directly above a beam,provided that the truss chord or beam dimension is not more than 8 in. (200 mm) and the sprinkler deflectoris located at least 6 in. (150 mm) above the structural member and where the sprinkler is positioned at adistance three times greater than the maximum dimension of the web members away from the webmembers.

10.2.7.2 3 .1.8 7

The requirements of 10.2.7.2 3 .1.3 2 shall not apply to sprinkler system piping less than 3 in. (80 mm) indiameter.

10.2.7.2 3 .1.9 8

The requirements of 10.2.7.2 3 .1.3 2 shall not apply to sprinklers positioned with respect to obstructions inaccordance with 10.2.7.2. 1. 2.

10.2.7.2 3 .1.10 9 *

Sprinklers shall be permitted to be placed without regard to the blades of ceiling fans less than 60 in.(1.5 m) in diameter, provided the plan view of the fan is at least 50 percent open.

10.2.7.2 3 .2 Suspended or Floor-Mounted Vertical Obstructions.


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The distance from sprinklers to privacy curtains, freestanding partitions, room dividers, and similarobstructions in light hazard occupancies shall be in accordance with Table 10.2.7.2 3 .2 and Figure10.2.7.2 3 .2.

Table 10.2.7.2 3 .2 Suspended or Floor-Mounted Obstructions in Light Hazard Occupancies Only(SSU/SSP)

Horizontal Distance (A) Minimum Vertical Distance Below Deflector (B) [in. (mm)]

6 in. (150 mm) or less 3 (75)

9 in. (225 mm) or less 4 (100)

12 in. (300 mm) or less 6 (150)

15 in. (375 mm) or less 8 (200)

18 in. (400 mm) or less 91⁄2 (240)

24 in. (600 mm) or less 121⁄2 (315)

30 in. (750 mm) or less 151⁄2 (395)

More than 30 in. (750 mm) 18 (450)

For SI units, 1 in. = 25.4 mm.

Note: For A and B, refer to Figure 8.6.5.2.2.

Figure 10.2.7.2 3 .2 Suspended or Floor-Mounted Obstruction in Light Hazard Occupancies Only(SSU/SSP).

10.2.7.2 3 .2.1*

In light hazard occupancies, privacy curtains, as shown in Figure 10.2.7.2 3 .2, shall not be consideredobstructions where all of the following are met:

(1) The curtains are supported by fabric mesh on ceiling track.

(2) Openings in the mesh are equal to 70 percent or greater.

(3) The mesh extends a minimum of 22 in. (550 mm) down from ceiling.

10.2.7.3 4 * Obstructions that Prevent Sprinkler Discharge from Reaching Hazard.

10.2.7.3 4 .1

Continuous or noncontinuous obstructions that interrupt the water discharge in a horizontal plane more than18 in. (450 mm) below the sprinkler deflector in a manner to limit the distribution from reaching theprotected hazard shall comply with 10.2.7.3 4 .

10.2.7.3 4 .2*

Sprinklers shall be installed under fixed obstructions over 4 ft (1.2 m) wide.

10.2.7.3 4 .3

Sprinklers installed under open gratings shall be of the intermediate level/rack storage type or otherwiseshielded from the discharge of overhead sprinklers.


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10.2.7.3 4 .4

The deflector of automatic sprinklers installed under fixed obstructions shall be positioned no more than12 in. (300 mm) below the bottom of the obstruction.

10.2.7.3 4 .5

Sprinklers installed under round ducts shall be of the intermediate level/rack storage type or otherwiseshielded from the discharge of overhead sprinklers.


The TC statement claimed the PI did not meet the definition of a global input. This a confusing reason for rejection since the PI identified the changes also needed to be applied to the old section 8.7.5, 8.8.5, 8.9.5, and 8.10.6. Isn’t a global change one that affects multiple sections? The reason also provided no indication of the merits and/or shortcomings in the proposed badly needed clarifications. What better time to make such changes than with the effort to improve the ability to apply and understand the standard?. Hopefully the fact that there is much less time to review these changes will not be a basis for casually rejecting it again.This change is just editorial but it does fix a couple of problems.

The flow of information on when to apply which section for obstructions less than 18 inches below the sprinkler is convoluted. 8.6.5.1 is titled performance objectives but the majority of the text is about obstructions close to the ceiling. These obstructions are also less than 18 inches below the deflector so technically belongs under the title of 8.6.5.2. This lead to previously adding 8.6.5.2.1.2 to attempt to differentiate between the two sections.

The new format more cleanly directs the user on which section is to be applied, makes some existing text unnecessary, and provides criteria in the correct locations (by title). I retained the interesting restriction that 4 ft wide obstructions less than 18 inches below the deflector are an issue only for light and ordinary hazard so this change would remain editorial.

If accepted:

A - the sections numbers for the Annex material needs to be modified and a very minor amount of editing such as Figure A.8.6.5.1.2 and associated text (another example of text in the wrong location)

B - the other sprinkler types need to be reformatted

Related Item

PI-488




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected but held

Resolution: The proposed language is not global and the committee does not agree with the 4ft rule beingadded and limited to light and ordinary hazard.


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10.2.7.1.2*


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(1) Subsection 9.5.5.2, Table 10.2.7.1.2, and Figure 10.2.7.1.2(a) shall be followed.


(3) Obstructions located against the wall and that are not over 30 in. (750 mm) in width shall be permittedto be protected in accordance with Figure 10.2.7.1.2(b).

(4) Obstructions located against the wall and that are not over 24 in. (600 mm) in width shall be permittedto be protected in accordance with Figure 10.2.7.1.2(c). The maximum distance between the sprinklerand the wall shall be measured from the sprinkler to the wall behind the obstruction and not to the faceof the obstruction.

Table 10.2.7.1.2 Positioning of Sprinklers to Avoid Obstructions to Discharge [Standard SprayUpright/Standard Spray Pendent (SSU/SSP)]





1 ft (300 mm) to less Less than 1 ft6 in. (450 mm)

21⁄2 (65)

1 ft 6 in. (450 mm) to less Less than2 ft (600 mm)

31⁄2 (90)


51⁄2(140)

2 ft 6 (750 mm) in. to less Less than3 ft (900 mm)

71⁄2 (190)

3 ft (900 mm) to less Less than 3 ft6 in. (1.1 m)

91⁄2 (240)

3 ft 6 in. (1.1 m) to less thanLess than 4 ft (1.2 m)

12 (300)

4 ft (1.2 m) to less Less than 4 ft 6 in.(1.4 m)

14 (350)

4 ft 6 in. (1.4 m) to less Less than 5 ft(1.5 m)

161⁄2 (420)


18 (450)


20 (510)


24 (600)


30 (750)


35 (875)


Note: For A and B, refer to Figure 8 10 .6 2 .5 7 .1.2(a).

Figure 10.2.7.1.2(a) Positioning of Sprinkler to Avoid Obstruction to Discharge (SSU/SSP).


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Figure 10.2.7.1.2(b) Obstruction Against Wall (SSU/SSP).

Figure 10.2.7.1.2(c) Obstructions Against Walls (SSU/SSP).


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This comment is to support First Revision No 683 and to apply the same changes to relatedtables throughout NFPA 13. (Global Revision) This is what was agreed upon at the first draftmeeting and will provide consistency throughout the document.Not that similar comments have been submitted to NFPA 13R and NFPA 13D.



Public Comment No. 294-NFPA 13-2017 [Section No. 10.2.7.2.2 [Excluding any Sub-Sections]]

Related Item

FR-683





Street Address:

City:

State:

Zip:


Committee Statement


Resolution: Use comment from PC 295.


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10.2.7.2.1.2

Regardless of the rules of 10.2.7.2,

a) solid continuous obstructions, where the top of the obstruction is level with or above the plane of thedeflector, shall meet the applicable requirements of 10.2.7.1.2. and

b) Sprinklers shall be installed under fixxed obstructions over 4 ft (1.2 m) wide.


This criteria was deleted from section 8.6.5.3 due to being in the wrong section. It should have been relocated but does not appear to be in the sections on obstructions less than 18 inches below the deflector (9.5.5 , 10.2.7.1 or 10.2.7.2 ).A second item is that PI-477 attempted to remove the restriction that it applied only to Light and Ordinary hazard occupancies. It was rejected and the committee statement said it is intended to create a MORE restrictive requirement for LH and OH. Do these larger obstructions not poise a problem for extra hazard and storage (which present a more demanding fire scenario)?

Related Item

PI-477




Street Address:

City:

State:

Zip:


Committee Statement

Committee Action: Rejected but held

Resolution: Use comment form PC 311.


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Sections] ]

The distance from sprinklers to privacy curtains, freestanding partitions, room dividers, and similarobstructions in light hazard occupancies shall be in accordance with Table 10.2.7.2.2 and Figure 10.2.7.2.2.

Table 10.2.7.2.2 Suspended or Floor-Mounted Obstructions in Light Hazard Occupancies Only (SSU/SSP)

Horizontal Distance (A)Minimum Vertical Distance Below Deflector (B)

[in. (mm)]

6 in. (150 mm) or less 3 (75)

More than 6 in. (150 mm) to 9 in. (225 mm) or less 4 (100)

More than 9 in. (225 mm) to 12 in. (300 mm) orless

6 (150)


8 (200)

More than 15 in. (375 mm) to 18 in. (400 450 mm)or less

91⁄2 (240)

More than 18 in. (450 mm) to ( 24 in. (600 mm) orless

121⁄2 (315)


151⁄2 (395)

More than 30 in. (750 mm) 18 (450)



Figure 10.2.7.2.2 Suspended or Floor-Mounted Obstruction in Light Hazard Occupancies Only(SSU/SSP).


This proposal is to express the horizontal distance as it was in the 2016 edition of the standard. The change represented in FR-683 is more difficult to interpret and apply than the existing verbiage and could easily lead to errors or misunderstandings. For example, for "15 in. (375 mm) or less" it states that the minimum "B" dimension is 8 in (200 mm). However, 12 in. (300 mm) is less than 18 in. and the "B" may be as small as 4 in. (100 mm). Thus the FR wording is less technically accurate than the existing text, and should not be adopted.Additional, this Comment also proposes to correct the typographical error in the metris conversionn for 18 inches.

Related Item


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FR-683




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: This proposal is to express the horizontal distance as it was in the 2016 edition of the standard. Thechange represented in FR-683 is more difficult to interpret and apply than the existing verbiage andcould easily lead to errors or misunderstandings. For example, for "15 in. (375 mm) or less" it statesthat the minimum "B" dimension is 8 in (200 mm). However, 12 in. (300 mm) is less than 18 in. andthe "B" may be as small as 4 in. (100 mm). Thus the FR wording is less technically accurate than theexisting text, and should not be adopted.

Additional, this Comment also proposes to correct the typographical error in the metris conversionnfor 18 inches.


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Sections] ]




Up to 6 in. (150 mm) or less 3 (75)

Up to 9 in. (225 mm) or less 4 (100)

Up to 12 in. (300 mm) or less 6 (150)

Up to 15 in. (375 mm) or less 8 (200)

Up to 18 in. (400 mm) or less 91⁄2 (240)

Up to 24 in. (600 mm) or less 121⁄2 (315)

Up to 30 in. (750 mm) or less 151⁄2 (395)

More than 30 in. (750 mm) 18 (450)


Note: For A and B, refer to Figure 8 Figure 10 . 6 2 . 5 7 .2.2 .



Suggested modification to more accurately match the distance ranges in 2016 edition. Corrected Figure number.

Other comment have been submitted to support First Revision No 683 and to apply the same changes to relatedtables throughout NFPA 13. (Global Revision) This is what was agreed upon at the first draftmeeting and will provide consistency throughout the document.Not that similar comments have been submitted to NFPA 13R and NFPA 13D.






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Related Item

FR-683





Street Address:

City:

State:

Zip:


Committee Statement


Resolution: See committee action on PC 181.


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Sections] ]


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Horizontal Distance (A)Minimum Vertical Distance

Below Deflector (B) [in. (mm)]

6 in. (150 mm) or less 3 (75)

More than 6 in. (150 mm) to 9 in.(225 mm) 9 in. (225 mm) or less

4 (100)


6 (150)

More than 12 in. (300 mm) to 15 in.(375 mm ) 15 in. (375 mm) or less

8 (200)


9 1 ⁄ 2 (240)


12 1 ⁄ 2 (315)



6 in. (150 mm) or less 3 (75)

9 in. (225 mm) or less 4 (100)

12 in. (300 mm) or less 6 (150)

15 in. (375 mm) or less 8 (200)

18 in. (400 mm) or less 9 1 ⁄ 2 (240)

24 in. (600 mm) or less 12 1 ⁄ 2 (315)

30 in. (750 mm) or less 15 1 ⁄ 2 (395)

More than 30 in. (750 mm) 18 (450)





APPA disagrees with the proposed changes in this table. The proposed language under "Horizontal Distance (A)"


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is more confusing than existing language. We agree with Larry Keeping’s negative with comment vote, “The change represented in this FR is more difficult to interpret and apply than the existing verbiage and could easily lead to errors or misunderstandings. For example, for "15 in. (375 mm) or less" it states that the minimum "B" dimension is 8 in (200 mm). However, 12 in. (300 mm) is less than 18 in. and the "B" may be as small as 4 in. (100 mm). Thus the FR wording is less technically accurate than the existing text, and should not be adopted.” We are asking the technical committee to review this Table to ensure the language is clear and concise.

Related Item

FR-683


Submitter Full Name: Billie Zidek

Organization: APPA

Street Address:

City:

State:

Zip:


Committee Statement


Resolution: See action on PC 181.


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10.3.2 Sidewall Spray Sprinklers.

Sidewall sprinklers shall only be installed as follows:

(1) Light hazard occupancies with smooth, horizontal or sloped, flat ceilings

(2) Ordinary hazard occupancies with smooth, flat ceilings where specifically listed for such use

(3) To protect areas below overhead doors

(4) At the top and bottom of elevator hoistways

(5) For the protection of steel building columns

(6) Under obstructions that require sprinklers


Sidewall sprinklers are commonly used to protect under various obstructions and this use should be spelled out in this section.

Related Item

FR-671





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: Sidewall sprinklers are commonly used to protect under various obstructions and this useshould be spelled out in this section.


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10.3.6.1.3

The distance between light fixtures or similar obstructions located 4 ft (1.2 m) or greater from the sprinklershall be in conformity with Table 10.3.6.1.3 and Figure 10.3.6.1.3.

Table 10.3.6.1.3 Positioning of Sprinklers to Avoid Obstructions (Standard Sidewall Spray Sprinklers)

Distance from Sidewall Sprinkler to Sideof Obstruction (A)

Maximum Allowable Distance of Deflector Above Bottomof Obstruction (B) [in. (mm)]

At least 4 ft (1.2 m) to less than 5 ft(1.5 m)

1 (25)

At least 5 ft (1.5 m) to less than 5 ft 6 in.(1.7 m)

2 (50)

At least 5 ft 6 in. (1.7 m) to less than 6 ft(1.8 m)

3 (75)


4 (100)


6 (150)


7 (175)


9 (225)


11 (275)

At least 8 ft 6 in. (2.6 m) or greater 14 (350)


Figure 10.3.6.1.3 Positioning of Sprinkler to Avoid Obstruction (Standard Sidewall SpraySprinklers).


This comment is to support First Revision No 683 and to apply the same changes to relatedtables throughout NFPA 13. (Global Revision) This is what was agreed upon at the first draft


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meeting and will provide consistency throughout the document.Not that similar comments have been submitted to NFPA 13R and NFPA 13D.




Related Item

FR-683





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: The figures and tables as written are clear, these changes may cause confusion andmisinterpretation resulting in sprinklers being obstructed.


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Sections] ]


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Obstructions projecting from the same wall as the one on which the sidewall sprinkler is mounted shall be inaccordance with Table 10.3.6.1.4 and Figure 10.3.6.1.4.

Table 10.3.6.1.4 Positioning of Sprinklers to Avoid Obstructions Along Wall (Standard Sidewall SpraySprinklers)

Distance from Sidewall Sprinkler

to Side of Obstruction (A)


4 in 4 in . (100 mm 100 mm ) to less than6 in. (150 mm)

1 (25)

6 in. (150 mm) to less Less than 1 ft(300 mm)

2 (50)

1 ft (300 mm) to less Less than 1 ft 6 in.(450 mm)

3 (75)

1 ft 6 in. (450 mm) to less Less than 2 ft(600 mm)

41⁄2(115)

2 ft (600 mm) to less Less than 2 ft 6 in.(750 mm)

53⁄4(145)

2 ft 6 in. (750 mm) to less Less than 3 ft(900 mm)

7 (175)

3 ft (900 mm) to less Less than 3 ft 6 in.(1.1 m)

8 (200)


91⁄4(230)


10 (250)


111⁄2(290)


123⁄4(325)


14 (350)


15 (380)


161⁄4(410)


171⁄2(440)


Note: For A and B, refer to Figure 8 10 .7 3 .5 6 .1.4.

Figure 10.3.6.1.4 Positioning of Sprinkler to Avoid Obstruction Along Wall (Standard SidewallSpray Sprinklers).


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Related Item

FR-683





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected



192 of 518 10/27/2017, 7:12 AM


Sections] ]

The distance from sprinklers to privacy curtains, free-standing partitions, room dividers, and similarobstructions in light hazard occupancies shall be in accordance with Table 10.3.6.2.2 and Figure 10.3.6.2.2.

Table 10.3.6.2.2 Suspended or Floor-Mounted Obstructions (Standard Sidewall Spray Sprinklers) in LightHazard Occupancies Only

Horizontal Distance (A)Minimum Vertical Distance Below Deflector (B)[in.

(mm)]

6 in. (150 mm) or less 3 (75)

More than 6 in. (150 mm) to Up to 9 in.(225 mm)

4 (100)

More than 9 in. (225 mm) Up to 12 in.(300 mm)

6 (150)


8 (200)


91⁄2 (240)


121⁄2 (315)


151⁄2 (390)

More than 30 in. (750 mm) or greater 18 (450)


Note: For A and B, refer to Figure 8 10 .7 3 .5 6 .2.2.

Figure 10.3.6.2.2 Suspended or Floor-Mounted Obstruction (Standard Sidewall Spray Sprinklers) inLight Hazard Occupancy Only.




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Related Item

FR-683





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected



194 of 518 10/27/2017, 7:12 AM



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11.2.5.1.2*


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(1) Sprinklers shall be in accordance with 9.5.5.2, Table 11.2.5.1.2, and Figure 11.2.5.1.2(a).

(2) Sprinklers shall be permitted to be spaced on opposite sides of obstructions not exceeding 4 ft (1.2 m)in width provided the distance from the centerline of the obstruction to the sprinklers does not exceedone-half the allowable distance permitted between sprinklers.



Table 11.2.5.1.2 Position of Sprinklers to Avoid Obstructions to Discharge (Extended Coverage Uprightand Pendent Spray Sprinklers)




Less than 1 ft (300 m) 0 (0)

1 ft (300 m) to less Less than 1 ft6 in. (450 m)

0 (0)

1 ft 6 in. (450 m) to less Less than2 ft (600 m)

1 (25)

2 ft (600 m) to less Less than 2 ft6 in. (750 m)

1 (25)

2 ft 6 in. (750 m) to less Less than3 ft (900 m)

1 (25)

3 ft (900 m) to less Less than 3 ft6 in. (1.1 m)

3 (75)

3 ft 6 in. (1.1 m) to less Less than4 ft (1.2 m)

3 (75)

4 ft (1.2 m) to less Less than 4 ft6 in. (1.4 m)

5 (125)


7 (175)


7 (175)


7 (175)

6 ft (1.8 m) to less Less than 6 ft6 in. (2 m)

9 (225)

6 ft 6 in. (2 m) to less Less than 7 ft(2.1 m)

11 (275)


14 (350)


14 (350)


15 (375)


17 (425)


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19 (475)

9 ft 6 (2.9 m) in. to less Less than10 ft (3.0 m)

21 (525)

Note: For A and B, refer to Figure 8 Figure 11 . 8 2 .5.1.2 (a).

Figure 11.2.5.1.2(a) Position of Sprinkler to Avoid Obstruction to Discharge (Extended CoverageUpright and Pendent Spray Sprinklers).

Figure 11.2.5.1.2(b) Obstructions Against Walls (Extended Coverage Upright and Pendent SpraySprinklers).

Figure 11.2.5.1.2(c) Obstructions Against Walls (Extended Coverage Upright and Pendent SpraySprinklers).


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Related Item

FR-683





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected



199 of 518 10/27/2017, 7:12 AM


Sections] ]


Table 11.2.5.2.2 Suspended or Floor-Mounted Obstructions (Extended Coverage Upright and PendentSpray Sprinklers) in Light Hazard Occupancies Only

Horizontal Distance (A)Minimum Vertical Distance Below Deflector (B) [in.

(mm)]


More than 6 in. (150 mm) Up to 9 in. (225 mm) 4 (100)



8 (200)


91⁄2 (240)

More than 18 in. (450 mm) to Up to 24 in.(600 mm)

121⁄2(315)


151⁄2(390)

More than 30 in. (750 mm) 18 (450)

Note: For A and B, refer to Figure 8 11 .8 2 .5.2.2.

Figure 11.2.5.2.2 Suspended or Floor-Mounted Obstruction (Extended Coverage Upright andPendent Spray Sprinklers) in Light Hazard Occupancy Only.






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Related Item

FR-683





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected



201 of 518 10/27/2017, 7:12 AM


11.2.7 Ceiling Pockets Clearance to Storage (Extended Coverage Upright and Pendent SpraySprinklers).

11.2.7.1 *

Except as provided in 11.2.7.3 and 11.2.7.4 , sprinklers shall be required in all ceiling pockets. Theclearance beween the deflector and top of storage shall be 18 in. (460 mm) or greater.

11.2.7.2

The 18 in. (450 460 mm) dimension shall not limit the height of shelving on a wall or shelving against awall in accordance with 11.2.7.

11.2.7.2.1

Where shelving is installed on a wall and is not directly below sprinklers, the shelves, including storagethereon, shall be permitted to extend above the level of a plane located 18 in. (450 460 mm) below ceilingsprinkler deflectors.

11.2.7.2.2

Shelving, and any storage thereon, directly below the sprinklers shall not extend above a plane located 18in. (450 460 mm) below the ceiling sprinkler deflectors.

11.2. 7.3 8 Ceiling Pockets (Extended Coverage Upright and Pendent Spay Sprinklers).

11.2.8.1

Except as allowed in 11.2.8.2 and 11.2.8.3, sprinklers shall be required in all ceiling pockets.

11.2.8.2

Sprinklers shall not be required in ceiling pockets where all of the following are met:

(1) The total volume of the unprotected ceiling pocket does not exceed 1000 ft3 (28 m3).

(2) The depth of the unprotected ceiling pocket does not exceed 36 in. (900 mm).

(3) The entire floor under the unprotected ceiling pocket is protected by sprinklers at the lower ceilingelevation.

(4)

(5) The unprotected ceiling pocket has noncombustible or limited-combustible finishes.

(6) Quick-response sprinklers are utilized throughout the compartment.

11.2. 7 8 . 4 3

Sprinklers shall not be required in skylights and similar pockets in accordance with 9.3.17 16 .


The text for EC deflector Clearance to Storage was mixed in with the subject of Ceiling Pockets. The referenced text should be edited so that Clearance to Storage is in Section 11.2.7 and the text for Ceiling Pockets should be placed in a new Section 11.2.8.

Related Item

FR-898



* The total size of all unprotected ceiling pockets in the same compartment within 10 ft (3 m) of each

other does not exceed 1000 ft3 (28 m3).


202 of 518 10/27/2017, 7:12 AM


Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: The text for EC deflector Clearance to Storage was mixed in with the subject of Ceiling Pockets.The referenced text should be edited so that Clearance to Storage is in Section 11.2.7 and the textfor Ceiling Pockets should be placed in a new Section 11.2.8.


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11.3.6.1.3

The distance between light fixtures or similar obstructions located 8 ft (2.4 m) or greater from the sprinklershall be in conformance with Table 11.3.6.1.3 and Figure 11.3.6.1.3.

Table 11.3.6.1.3 Positioning of Sprinklers to Avoid Obstructions (Extended Coverage Sidewall SpraySprinklers)



8 ft (2.4 m) to less than 10 ft (3.0 m) 1 (25)








17 ft (5.2 m) or greater 14 (350)


Figure 11.3.6.1.3 Positioning of Sprinkler to Avoid Obstruction (Extended Coverage Sidewall SpraySprinklers).

[see new figure]



11.3.6.1.2.png Figure with corrected reference


This comment is to correct the reference in Figure 11.3.6.1.3. Figure should reference 11.3.6.1.2.2 not 8.9.5.2.1.3

Related Item

FR-729


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Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: This comment is to correct the reference in Figure 11.3.6.1.3. Figure should reference11.3.6.1.2.2 not 8.9.5.2.1.3


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New Section after 12.1.8.1.1

Pendent-type residential sprinklers located under or adjacent to beams shall be installed in accordance withone of the following:

1. Pendent, recessed pendent, and flush-type pendent sprinklers shall be permitted tobe installed directly under a beam having a maximum depth of 14 in. (350 mm) with thesprinkler deflector 1 in. to 2 in. (25 mm to 50 mm) below the beam, or in accordance withthe manufacturer’s instructions for recessed or flush sprinklers if the deflector is less than1 in. (25 mm) below the beam.

2. Pendent sprinklers, including flush-type pendent sprinklers, shall be permitted to beinstalled adjacent to beams where the vertical centerline of the sprinkler is no greaterthan 2 in. (50 mm) from the edge of the beam and with the sprinkler deflector 1 in. to 2 in.(25 mm to 50 mm) below the beam, or in accordance with the manufacturer’s instructionsfor flush sprinklers if the deflector is less than 1 in. (25 mm) below the beam.

See New Figures (attached)

renumber subsequent sections



Beam_ceiling_figures.pdf New Figures - Sprinkler under Beam and Sprinkler adjacent to beam


This proposal seeks to correlate the position requirements for residential sprinklers under beams with the language of NFPA 13D and NFPA 13R. Also see related comment (PC-245)

Note to committee: In subsection (2) for sprinklers adjacent to beam: is it needed to specify flush-type pendents?





Related Item

FR-695





Street Address:

City:

State:

Zip:


Committee Statement


206 of 518 10/27/2017, 7:12 AM

CommitteeAction:


Resolution: SR-436-NFPA 13-2017 See new figures

Statement: This proposal seeks to correlate the position requirements for residential sprinklers under beamswith the language of NFPA 13D and NFPA 13R. Also see related comment (PC-245)

Note to committee: In subsection (2) for sprinklers adjacent to beam: is it needed to specify flush-type pendents?


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New 12.1.8.1.2

Concealed sprinklers shall not be installed in beams greater than 4 inches.


Following discussions at the first draft meeting on the installation of residential pendent sprinklers below beams, the question was raised if this would also apply to concealed sprinklers. Upon review of existing test data, a recommendation was made to limit concealed sprinklers installed under beams to no greater than 4 inches in depth. This language would clarify that the previous section would not apply to concealed sprinklers.

Related Item

PI-469


Submitter Full Name: Louis Guerrazzi



Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:


Resolution: SR-438-NFPA 13-2017 Correlates with action taken in the residential committee.

Statement: Following discussions at the first draft meeting on the installation of residential pendent sprinklersbelow beams, the question was raised if this would also apply to concealed sprinklers. Upon reviewof existing test data, a recommendation was made to limit concealed sprinklers installed underbeams to no greater than 4 inches in depth. This language would clarify that the previous sectionwould not apply to concealed sprinklers.


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12.1.8.1.1

Pendent and upright sprinklers installed under beamed or beamed and sloped ceilings shall be permitted tobe installed within 3 in. (75 mm) below beams where all of the following apply:

(1) Maximum beam depth of 14 in. (355 mm)

(2) Maximum ceiling height of 24 ft. (7.3 m)

(3) Maximum ceiling slope of 8 in 12

(4) Maximum compartment size of 600 ft2 (56 m2)


This proposal seeks to correlate the requirements for residential sprinklers under beams with the language of NFPA 13D and NFPA 13R. The residential standards state that the sprinkler deflector must be installed 1 in. to 2 in. below the beam and not up to 3 inches below beam as stated in in FR 695.This 3 inch dimension was deleted and a new section was added added with the positioning requirements (from NFPA 13D/13R).See related comment bringing in the positioning requirements from the residential standards.





Related Item

FR-695





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: This proposal seeks to correlate the requirements for residential sprinklers under beams with thelanguage of NFPA 13D and NFPA 13R. The residential standards state that the sprinkler deflectormust be installed 1 in. to 2 in. below the beam and not up to 3 inches below beam as stated in in FR695.This 3 inch dimension was deleted and a new section was added added with the positioningrequirements (from NFPA 13D/13R).


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See related comment bringing in the positioning requirements from the residential standards.


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12.1.10.1.2


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(1) Sprinklers shall be in accordance with 9.5.5.2, Table 12.1.10.1.2, and Figure 12.1.10.1.2(a).



(4) Obstructions that are located against the wall and that are not over 24 in. (600 mm) in width shall bepermitted to be protected in accordance with Figure 8.10.6.1.2(c). The maximum distance between thesprinkler and the wall shall be measured from the sprinkler to the wall behind the obstruction and not tothe face of the obstruction.

Table 12.1.10.1.2 Positioning of Sprinklers to Avoid Obstructions to Discharge (Residential Upright andPendent Spray Sprinklers)






0 (0)


1 (25)


1 (25)


1 (25)


3 (75)


3 (75)


5 (125)


7 (175)


7 (175)


7 (175)


9 (225)


11 (275)

7 ft (2.1 m) and greater 14 (350)

Note: For A and B, refer to Figure 8 Figure 12 . 1. 10. 6. 1.2 (a).

Figure 12.1.10.1.2(a) Positioning of Sprinkler to Avoid Obstruction to Discharge (ResidentialUpright and Pendent Spray Sprinklers).


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Figure 12.1.10.1.2(b) Obstructions Against Wall (Residential Upright and Pendent SpraySprinklers).


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Related Item

FR-683





Street Address:

City:

State:

Zip:


Committee Statement


215 of 518 10/27/2017, 7:12 AM

CommitteeAction:

Rejected



216 of 518 10/27/2017, 7:12 AM


12.1.10.2.3 Shadow Areas*

Shadow areas created by walls and partitions shall be permitted in the protection area of a sprinkler as long

as the cumulative dry areas do not exceed 15 ft 2 (1.4 m 2 ) per sprinkler.


Add shadow area rules for residential sprinklers. This is consistent with NFPA 13R and NFPA 13D. The language is very specific that it only applies to walls and partitions and not horizontal obstructions such as ducts, pipes, etc as there are other rules (4 times rule) for those obstructions.Also, add the annex language and details as found in A.9.1.1.(3)(a) & (b) as found in the FDR to this section

Related Item

PI No. 200




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: Add shadow area rules for residential sprinklers. This is consistent with NFPA 13R and NFPA 13D.The language is very specific that it only applies to walls and partitions and not horizontalobstructions such as ducts, pipes, etc as there are other rules (4 times rule) for those obstructions.

Also, add the annex language and details as found in A.9.1.1.(3)(a) & (b) as found in the FDRto this section


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12.1.10.2.2 Suspended or Floor-Mounted Vertical Obstructions.

The distance from sprinklers to privacy curtains, free-standing partitions, room dividers, and similarobstructions in light hazard occupancies shall be in accordance with Table 12.1.10.2.2 and Figure12.1.10.2.2.

Table 12.1.10.2.2 Suspended or Floor-Mounted Obstructions (Residential Upright and Pendent SpraySprinklers) in Light Hazard Occupancies Only


(mm)]

6 in. (150 mm) or less 3 (75)

More than 6 in. (150 mm) to 9 in. (225 mm) 4 (100)

More than 9 in. (225 mm) to 12 in. (300 mm) 6 (150)

More than 12 in. (300 mm) to 15 in.(375 mm)

8 (200)


91⁄2(240)


121⁄2(315)


151⁄2(390)

More than 30 in. (750 mm) 18 (450)


Figure 12.1.10.2.2 Suspended or Floor-Mounted Obstruction (Residential Upright and PendentSpray Sprinklers) in Light Hazard Occupancy Only .


In FR-697, the TC action on PI-457, the Committee opted to delete the "in light hazard occupancies only" text from 12.1.11.2.2, Table 12.1.11.2.2 and Figure 12.1.11.2.2(a). For consistency, this same action should also be applied to 12.1.10.2.2, Table 12.1.10.2.2 and Figure 12.1.10.2.2

Related Item

FR-697


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Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: In FR-697, the TC action on PI-457, the Committee opted to delete the "in light hazard occupanciesonly" text from 12.1.11.2.2, Table 12.1.11.2.2 and Figure 12.1.11.2.2(a). For consistency, this sameaction should also be applied to 12.1.10.2.2, Table 12.1.10.2.2 and Figure 12.1.10.2.2


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12.1.10.2.2 Suspended or Floor-Mounted Vertical Obstructions.

The distance from sprinklers to privacy curtains, free-standing partitions, room dividers, and similarobstructions in light hazard occupancies shall be in accordance with Table 12.1.10.2.2 and Figure12.1.10.2.2.

Table 12.1.10.2.2 Suspended or Floor-Mounted Obstructions (Residential Upright and Pendent SpraySprinklers) in Light Hazard Occupancies Only


(mm)]




6 (150)


8 (200)


91⁄2(240)


121⁄2(315)


151⁄2(390)

More than 30 in. (750 mm) 18 (450)

Note: For A and B, refer to Figure 8 Figure 12 . 1. 10. 6. 2.2 .

Figure 12.1.10.2.2 Suspended or Floor-Mounted Obstruction (Residential Upright and PendentSpray Sprinklers) in Light Hazard Occupancy Only.





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Related Item

FR-683





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: The figures and tables as written are clear, these changes may cause confusion andmisinterpretation resulting in sprinklers being obstructed. See action on PC 189.


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12.1.11.1.3


Table 12.1.11.1.3 Positioning of Sprinklers to Avoid Obstructions (Residential Sidewall Sprinklers)










16 ft (4.9 m)to less than 17 ft (5.2 m) 11 (275)

17 ft (5.2 m) or greater 14 (350)


Figure 12.1.11.1.3 Positioning of Sprinkler to Avoid Obstruction (Residential Sidewall Sprinklers).

[See new corrected figure]



12.1.11.1.3.png New figure with corrected reference


This comment is to correct the reference in Figure 12.1.11.1.3. Figure should reference 12.1.11.1.3 not 8.10.7.2.1.3

Related Item

FR-733



222 of 518 10/27/2017, 7:12 AM




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: This comment is to correct the reference in Figure 12.1.11.1.3. Figure should reference12.1.11.1.3 not 8.10.7.2.1.3


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12.1.11.1.3


Table 12.1.11.1.3 Positioning of Sprinklers to Avoid Obstructions (Residential Sidewall Sprinklers)




1 (25)


2 (50)


3 (75)


4 (100)


6 (150)


7 (175)


9 (225)

At least 16 ft (4.9 m)to less than 17 ft(5.2 m)

11 (275)

At least 17 ft (5.2 m) or greater 14 (350)


Figure 12.1.11.1.3 Positioning of Sprinkler to Avoid Obstruction (Residential Sidewall Sprinklers).




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Related Item

FR-683





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected



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12.1.11.1.4


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Continuous obstructions projecting from the same wall as the one on which the sidewall sprinkler ismounted shall be in accordance with one of the following arrangements:

(1) Sprinklers shall be in accordance with Table 12.1.11.1.4 and Figure 12.1.11.1.4(a).

(2) Sprinklers shall be permitted to be spaced on opposite sides of obstructions less than 4 ft (1.2 m) inwidth where the distance from the centerline of the obstruction to the sprinklers does not exceed one-half the allowable distance between sprinklers.



Table 12.1.11.1.4 Positioning of Sprinklers to Avoid Obstructions Along Wall (Residential SidewallSprinklers)

Distance from Sidewall

Sprinkler to


Maximum Allowable Distance of Deflector

Above Bottom of

Obstruction (B) [in. (mm)]

Less than 1 ft 6 in. (450 mm) 0 (0)

1 ft 6 in. (450 mm) to less Less than 3 ft (900 mm) 1 (25)

3 ft (900 mm) to less Less than 4 ft (1.2 m) 3 (75)

4 ft (1.2 m) to less Less than 4 ft 6 in. (1.4 m) 5 (125)

4 ft 6 in. (1.4 m) to less Less than 6 ft (1.8 m) 7 (175)


6 ft 6 in. (2.0 m) to less Less than 7 ft (2.1 m) 11 (275)


Note: For A and B, refer to Figure 8 Figure 12 . 10 1 . 7 11 .1.4 (a).

Figure 12.1.11.1.4(a) Positioning of Sprinkler to Avoid Obstruction Along Wall (ResidentialSidewall Sprinklers).

Figure 12.1.11.1.4(b) Obstruction Against Wall (Residential Sidewall Spray Sprinklers).


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Figure 12.1.11.1.4(c) Obstruction Against Wall (Residential Sidewall Spray Sprinklers).






Related Item

FR-683



229 of 518 10/27/2017, 7:12 AM




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected



230 of 518 10/27/2017, 7:12 AM


12.1.11.2.2* Suspended or Floor-Mounted Vertical Obstructions.

The distance from sprinklers to privacy curtains, free-standing partitions, room dividers, and similarobstructions shall be in accordance with Table 12.1.11.2.2 and Figure 12.1.11.2.2(a).

Table 12.1.11.2.2 Suspended or Floor-Mounted Obstructions (Residential Sidewall Sprinklers)

Horizontal Distance (A)Minimum Allowable Distance Below Deflector (B) [in.

(mm)]



4 (100)


6 (150)


8 (200)


91⁄2(240)


121⁄2(315)


151⁄2(390)

More than 30 in. (750 mm) 18 (450)



Figure 12.1.11.2.2(a) Suspended or Floor-Mounted Obstruction (Residential Sidewall Sprinklers).

Figure 12.1.11.2.2(b) Suspended or Floor-Mounted Obstructions (Residential Sprinklers).




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Related Item

FR-683





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected



232 of 518 10/27/2017, 7:12 AM


12.1.11.3.6 Shadow Areas.

Shadow areas shall be permi ed in the protec on area of a sprinkler as long as the cumula ve dry areas do not

exceed 15 2 (1.4 m2) per sprinkler.


While it is true that the obstruction rules currently provide an appropriate guidance for areas not directly within the spray of a discharging sprinkler for standard spray sprinklers it would be appropriate for that language from 13R and 13D regarding shadow areas to included in chapter 12 of NFPA 13 which deals with residential sprinklers. The hazards in a dwelling unit are not different based upon the standard being used and it must be noted that the current obstruction rules allow areas larger then 15 sq ft to be shielded from direct spray from a discharging sprinkler.

Note that the proposed language was taken from NFPA 13R.

Related Item

PI-201





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: Add shadow area rules for residential sprinklers. This is consistent with NFPA 13R and NFPA 13D.The language is very specific that it only applies to walls and partitions and not horizontalobstructions such as ducts, pipes, etc as there are other rules (4 times rule) for those obstructions.

Also, add the annex language and details as found in A.9.1.1.(3)(a) & (b) as found in the FDRto this section


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13.2.8.1.2

Sprinklers shall be arranged to comply with 9.5.5.2, Table 13.2.8.1.2, and Figure 13.2.8.1.2.

Table 13.2.8.1.2 Positioning of Sprinklers to Avoid Obstructions to Discharge (CMSA Sprinklers)

Distance from Sprinkler to


Maximum Allowable Distance of Deflector Above Bottom ofObstruction (B)[in. (mm)]



11⁄2(35)


3 (75)


51⁄2(140)


8 (200)


10 (250)


12 (300)


15 (375)


18 (450)


22 (550)


26 (650)

6 ft (1.8 m) or greater 31 (775)


Figure 13.2.8.1.2 Positioning of Sprinkler to Avoid Obstruction to Discharge (CMSA Sprinklers).


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Related Item

FR-683





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected



235 of 518 10/27/2017, 7:12 AM


13.2.8.3.2

Sprinklers shall be positioned with respect to fluorescent lighting fixtures, ducts, and obstructions more than24 in. (600 mm) wide and located entirely below the sprinklers so that the minimum horizontal distance fromthe near side of the obstruction to the center of the sprinkler is not less than the value specified in Table13.2.8.3.2 and Figure 13.2.8.3.2.

Table 13.2.8.3.2 Obstruction Entirely Below Sprinkler (CMSA Sprinklers)

Minimum Distance to Side of Obstruction(ft) (A)

Distance of Deflector Above Bottom of Obstruction(B)[in. (mm)]

Less than 6 in. (150 mm) 11⁄2(35)

6 in. (150 mm) to less Less than 12 in.(300 mm)

3 (75)


4 (100)


5 (125)


51⁄2(140)


6 (150)


Figure 13.2.8.3.2 Obstruction Entirely Below Sprinkler (CMSA Sprinklers).






Related Item

FR-683


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Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected



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Public Comment No. 82-NFPA 13-2017 [ Section No. 14.2.4 [Excluding any Sub-

Sections] ]

* ESFR sprinklers shall be permitted for use in buildings with unobstructed

and noncombustible

or obstructed construction.



Tyco_K25_ESFR.pdf Page 3 under roof construction

FMDS0200.pdf Page 51 section 2.2.3.4.2


This comment continues the modifications from PI-477 as to where ESFR sprinklers can be used.The use of ESFR sprinklers under obstructed combustible construction is permitted within the sprinkler manufactures data sheets and correlates with the provisions of FM data sheet 2-0



Public Comment No. 316-NFPA 13-2017 [New Section after A.14.2.4]

Related Item



Submitter Full Name: Thomas Noble

Organization: AFSA

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: This comment continues the modifications from PI-477 as to where ESFR sprinklers can be used.

The use of ESFR sprinklers under obstructed combustible construction is permitted within thesprinkler manufactures data sheets and correlates with the provisions of FM data sheet 2-0


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14.2.8.2.4

Deviations from the maximum sprinkler

spacing

spacing shall be permitted to eliminate obstructions created by structural elements (such as trusses,bar joists, and wind bracing) by moving a

single

sprinkler along the branch line a maximum of

1 ft

1 ft (

300 mm

300 mm ) from its allowable spacing, provided coverage

for the sprinklers on that branch line and the sprinklers on the branch line it is moving away from

for that sprinkler does not exceed

110 ft 2

110 ft2 (10.

2 m

2 m2 ) per

sprinkler

sprinkler where all of the following conditions are met:

(1) The average actual floor area protected by the

sprinklers on the moved branch line

moved sprinkler and the adjacent sprinklers

on the adjacent branch lines

shall not

exceed 100 ft 2

exceed 100 ft2 (9.

3 m 2 ) per sprinkler.

3 m2).

(2) Adjacent branch lines shall maintain the same pattern.

(3) In no case shall the distance between sprinklers

exceed 12 ft

exceed 12 ft (3.

7 m

7 m ).

It shall not be permitted to move a branch line where there are moved sprinklers on a branch line thatexceed the maximum sprinkler spacing.


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This issue was resolved in Committee and should not have proceeded to the First Draft. Return to 2016 edition language,

Related Item

FR-832





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: This issue was resolved in Committee and should not have proceeded to the First Draft. Returnto 2016 edition language,


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14.2.11.1.1

Sprinklers shall be arranged to comply with Table 14.2.11.1.1 and Figure 14.2.11.1.1 for obstructions at theceiling, such as beams, ducts, lights, and top chords of trusses and bar joists.

Table 14.2.11.1.1 Positioning of Sprinklers to Avoid Obstructions to Discharge (ESFR Sprinklers)

Distance from Sprinkler to





11⁄2(35)


3 (75)


51⁄2(140)


8 (200)


10 (250)


12 (300)


15 (375)


18 (450)


22 (550)


26 (650)

6 ft (1.8 m) or greater 31 (775)


Figure 14.2.11.1.1 Positioning of Sprinkler to Avoid Obstruction to Discharge (ESFR Sprinklers).


This comment is to support First Revision No 683 and to apply the same changes to relatedtables throughout NFPA 13. (Global Revision) This is what was agreed upon at the first draft


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meeting and will provide consistency throughout the document.Not that similar comments have been submitted to NFPA 13R and NFPA 13D.




Related Item

FR-683





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected



243 of 518 10/27/2017, 7:12 AM



15.3.5 Two inch dry barrel sidewall sprinklers shall not be attached to wet pipe in exterior walls.



IMG_0025.JPG two inch dry sidewall sprinkler in four inch wall

Dry_Sidewall_Freeze_Protection_3.pdf two inch dry sprinkler in finished apartment


Currently, sprinklers are conducting cold into the tee and creating ice plugs. Previous editions of NFPA 13 are to ambiguous and create unnecessary controversy or improper installation, which creates property damage and life safety concerns, as well as false alarms in icy conditions. In multifamily housing, thermostats will likely be lowered while resident is away. Additionally, four inch walls do not allow for proper insulation because the Tee is two and a half inches deep.

Without clarification AHJ's and third party engineers are allowing the two inch dry barrel sprinkler which creates a competitive advantage to the improper installation. In 2011 and 2012, every apartment community in DFW area with two inch dry sprinklers had freeze breaks. Some had over 100 at one community. Some systems were down for extended time periods, and fire watch was impossible because of icy roads. Emergency personal were responding to false alarms which to precedence over other emergencies. In addition, property damage and resident displacement was excessive.

Related Item

http://www.jensenhughes.com/blog/fire-sprinkler-system-freeze-protection/


Submitter Full Name: Clay Shipman

Organization: Shipman Fire

Street Address:

City:

State:

Zip:

Submittal Date: Tue Apr 04 11:21:38 EDT 2017

Committee Statement

CommitteeAction:

Rejected

Resolution: The existing table provides adequate barrel length for proper protection where subject to freezing.The installation shown in the attached images are not compliant with the existing language in NFPA13 since the barrel protrudes into the insulation and the measurement should be taken form theface of the insulation.


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16.3.9.6.2.1

16.3.9.6.2.1 Where non-metallic pipe installed per 16.3.9.6 supplies sprinklers in a private garage within adwelling unit not exceeding 1,000 sq. ft. in area, it may be protected from the garage compartment by notless than the same wall or ceiling sheathing that is required by the applicable building code.


NFPA 13 currently describes automobile parking and showrooms as a Group 1 Ordinary Hazard (A.5.3.1). Generally, the occupancy classification of "automobile parking" is applied to floors and basements of buildings and also to separate structures where large numbers of cars are clustered together, accessible by any person that is a guest of the building or client of the facility within which it is located. But the standard is mute regarding private parking garages within dwelling units, which are addressed separately in the International Building Code. The intent of the building code appears to be that these compartments are considered differently than automobile parking that would be classified as S-2 (public) or U (private). NFPA 13R is very clear regarding its intent that private garages are considered part of the dwelling units and excepts the designer from these OH 1 provisions (7.3.3 and 7.3.3.1).

Though IBC 406.3.1 classifies private garages as Group U, 406.3.4 very specifically excludes private garages adjacent to dwelling units from the separation requirements of 508, which would otherwise be 1-hour for U/R2. Instead, 406.3.4.1 prescribes a single layer of 5/8" Type X gyp board at the ceiling and a single layer of at least 1/2" non-rated gyp board, "... applied to structures supporting the separation from habitable rooms above the garage", which are generally the walls of the garage on which the joists of the floor/ceiling rest. Unless those walls are the separating ones between the subject and an adjacent unit, in which case they must be one-hour. In this arrangement, the private garages are, "... usually considered accessory to the building they serve", according to the 2015 International Building Code Commentary. When they are private and within the dwelling unit, these garages are incidental use areas and considered part of the primary occupancy in which they are located. It's important to also note that IBC 406.3.1 limits a private garage to 1,000 sq.ft. in area, which discourages and arguably precludes using such spaces for automotive service uses and more hazardous fire loading. This harmonizes and coincides with the committee's acceptance of FR 656 and the 1,000 sq. ft. area limit for use of non-metallic piping in OH compartments.

Related Item

First Revision No. 656


Submitter Full Name: Stephen Leyton

Organization: Protection Design Consulting

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:




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Statement: NFPA 13 currently describes automobile parking and showrooms as a Group 1 Ordinary Hazard(A.5.3.1). Generally, the occupancy classification of "automobile parking" is applied to floors andbasements of buildings and also to separate structures where large numbers of cars are clusteredtogether, accessible by any person that is a guest of the building or client of the facility within which itis located. But the standard is mute regarding private parking garages within dwelling units, whichare addressed separately in the International Building Code. The intent of the building code appearsto be that these compartments are considered differently than automobile parking that would beclassified as S-2 (public) or U (private). NFPA 13R is very clear regarding its intent that privategarages are considered part of the dwelling units and excepts the designer from these OH 1provisions (7.3.3 and 7.3.3.1).

Though IBC 406.3.1 classifies private garages as Group U, 406.3.4 very specifically excludes privategarages adjacent to dwelling units from the separation requirements of 508, which would otherwisebe 1-hour for U/R2. Instead, 406.3.4.1 prescribes a single layer of 5/8" Type X gyp board at theceiling and a single layer of at least 1/2" non-rated gyp board, "... applied to structures supporting theseparation from habitable rooms above the garage", which are generally the walls of the garage onwhich the joists of the floor/ceiling rest. Unless those walls are the separating ones between thesubject and an adjacent unit, in which case they must be one-hour. In this arrangement, the privategarages are, "... usually considered accessory to the building they serve", according to the 2015International Building Code Commentary. When they are private and within the dwelling unit, thesegarages are incidental use areas and considered part of the primary occupancy in which they arelocated. It's important to also note that IBC 406.3.1 limits a private garage to 1,000 sq.ft. in area,which discourages and arguably precludes using such spaces for automotive service uses and morehazardous fire loading. This harmonizes and coincides with the committee's acceptance of FR 656and the 1,000 sq. ft. area limit for use of non-metallic piping in OH compartments.


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16.7* Air Venting.

The vent required by 8.1.5 shall be located near a high point in the system to allow air to be removed fromthat portion of the system by one of the following methods:

(1) Manual valve, minimum 1⁄2 in. (15 mm) size

(2) Automatic air vent

Remote inspector’s

(3) I nspector’s test valve

(4) Other approved means


The word remote in this context is vague, provides no necessary information, and is unenforceable. The necessary criteria for locating the vent is already contained in the main body of 16.7.

Related Item

FR-662





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: The current language is provides a reduced amount of air in the system and allows a remote ITCto act as an air vent. An ITC at the riser does not properly vent the air out of the system. Remote isintended to apply to the connection to the sprinkler system.


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16.9.4 Automated Valves.

16.9.4.1

A listed indicating valve with automated controls shall be permitted.

16.9.4.2

A listed automated water control valve assembly with a reliable position indication connected to a remotesupervisory station shall be permitted.

16.9.4.3

An automated water control valve shall be able to be operated manually as well as automatically.



NFPA_13_16-9-4-2-1.docx


The committee originally resolved this submittal on Public Input 262. They felt this was an issue for NFPA 72 to address. I respectfully disagree, a device that is capable of being supervised must be required by NFPA 13, then NFPA 72 should require that device to be properly. Supervision of valve position is very important to NFPA 13, but in this case without the coil being installed on the solenoid the system will not flow water no matter what happens or weather or not the valve is open. Technology is available today to monitor that the coil is in it's installed position

Related Item

262


Submitter Full Name: Kevin Murray

Organization: Fire Trace International

Street Address:

City:

State:

Zip:

Submittal Date: Tue Apr 25 16:57:24 EDT 2017

Committee Statement




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16.9.4.2.1 Removal of an electric actuator from the pre‐action or deluge valve that it controls shall

result in an audible and visual indication of system impairment at the system releasing control panel.


16.9.8.6

Such means shall consist of a tee outlet downstream of the pressure-reducing valve identical in size to thesprinkler system feed, available for connection to field testing devices, or other method approved by theauthority having jurisdiction.


This text provides one appropriate method to achieve the performance requirement of 16.9.8.5 but arbitrarily excludes others. It should be relocated to the annex as a suggested but not required means of compliance.



Public Comment No. 143-NFPA 13-2017 [New Section after A.16.9.8.3]

Related Item

FR-659





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: This text provides one appropriate method to achieve the performance requirement of 16.9.8.5 butarbitrarily excludes others. It should be relocated to the annex as a suggested but not requiredmeans of compliance.


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16.9.11 Floor Control Valve Assemblies.

16.9.11.1

Multistory buildings exceeding two stories in height shall be provided with a floor control valve, check valve,main drain valve, and flow switch for isolation, control, and annunciation of water flow for each individualfloor level.

16.9.11.2

The floor control valve, check valve, main drain valve, and flow switch required by 8 by 16 .2 9 .4 11 .1 shallnot be required where sprinklers on the top level of a multistory building are supplied by piping on the floorbelow.

16.9.11.3

The floor control valve, check valve, main drain valve, and flow switch required by 8 by 16 .2 9 .4 11 .1 shallnot be required where the total area of all floors combined does not exceed the system protection arealimitations of 8 4 .2 5 .1.

16.9.11.4

The requirements of 8 of 16 .2 9 .4 11 shall not apply to dry systems in parking garages.

16.9.11.5 * System Subdivision.

Where individual floor/zone control valves are not provided, a flanged joint or mechanical coupling shall be

used at the riser at each floor for connections to piping serving floor areas in excess of 5000 ft2 (465 m2).


In Section 16.9.11 for Floor Control Valves, the text still references sections from the 2016 edition of the standard (ie. 8.2.1, 8.2.4 & 8.2.4.1). Those references need to be updated to call up the appropriate sections from the new Chapter structure.

Related Item

FR-890




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: In Section 16.9.11 for Floor Control Valves, the text still references sections from the 2016 editionof the standard (ie. 8.2.1, 8.2.4 & 8.2.4.1). Those references need to be updated to call up theappropriate sections from the new Chapter structure.


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16.10.4 * System, Main Drain, or Sectional Drain Connections.

16.10.4.1 *

Provisions shall be made to properly drain all parts of the system.

16.10.4.2

Drain connections for systems supply risers and mains shall be sized as shown in Table 16.10.4.2.

Table 16.10.4.2 Drain Size

Riser or Main Size

[in. (mm)]

Size of Drain Connection

[in. (mm)]

Up to 2 (50) 3 ⁄ 4 (20) or larger

2 1 ⁄ 2 (65), 3 (80), 3 1 ⁄ 2 (90) 1 1 ⁄ 4 (32) or larger

4 (100) and larger 2 (50) or larger

16.10.4.3

Where an interior sectional or floor control valve(s) is provided, it shall be provided with a drain connectionhaving a minimum size as shown in Table 16.10.4.2 to drain that portion of the system controlled by thesectional valve.

16.10.4.4

Drains shall discharge outside or to a drain connection capable of handling the flow of the drain. [SeeFigure A.16.14.1(b).]

16.10.4.5

For those drains serving pressure-reducing valves, the drain, drain connection, and all other downstreamdrain piping shall be sized to permit a flow of at least the greatest system demand supplied by the pressure-reducing valve.

16.10.4.6 Main Drain Test Connections.

16.10.4.6.1

Main drain test connections shall be provided at locations that will permit flow tests of water supplies andconnections.

16.10.4.6.2

Main drain test connections shall be installed that the valve can be opened wide for a sufficient time toassure a proper test without causing water damage.

16.10.4.6.3

Main drain connections shall be sized in accordance with 16.10.4.2.

16.10.4.7

The test connections required by 16.10.4.6 shall be permitted to be used as main drain connections.

16.10.4.8

Where drain connections for floor control valves are tied into a common drain riser, the drain riser shall beone pipe size larger downstream of each size drain connection tying into it.

16.10.4.9

Where subject to freezing, a minimum 4 ft (1.2 m) of exposed drain pipe shall be in a heated area betweenthe drain valve and the exterior wall when drain piping extends through the wall to the outside.


During the rewrite / editing a number of Annex Section A.8.16.2.4 and the corresponding Figure A.8.16.2.4(a) and Figure A.8.16.2.4(b) were deleted, with no substantiation or explanation. The text and the illustrations should be


253 of 518 10/27/2017, 7:12 AM

reinstated as Annex Section A.16.10.4, Figure A.16.10.4(a) and Figure A.16.10.4(b). The missing text and illustrations have stood the test of time and provide extremely valuable information / guidance. They should not be lost as part of the editing process.

Additionally, Annex Section A.8.16.2.4.1 was similarly omitted without substantiation and it too should be retained, as Annex Section A.16.10.4.1.

Related Item

FR-644




Street Address:

City:

State:

Zip:

Submittal Date: Sun May 07 14:04:04 EDT 2017

Committee Statement

CommitteeAction:


Resolution: SR-451-NFPA 13-2017 Use attachment from PC 72 with PC 69 action.

Statement: During the rewrite / editing a number of Annex Section A.8.16.2.4 and the corresponding FigureA.8.16.2.4(a) and Figure A.8.16.2.4(b) were deleted, with no substantiation or explanation. The textand the illustrations should be reinstated as Annex Section A.16.10.4, Figure A.16.10.4(a) andFigure A.16.10.4(b). The missing text and illustrations have stood the test of time and provideextremely valuable information / guidance. They should not be lost as part of the editing process.

Additionally, Annex Section A.8.16.2.4.1 was similarly omitted without substantiation and it tooshould be retained, as Annex Section A.16.10.4.1.


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16.10.4.2 Restore Annex language A.16.10.4.2 (A.8.16.2.4.2 in 2016)

Drain connections for systems supply risers and mains shall be sized as shown in Table 16.10.4.2.

Table 16.10.4.2 Drain Size

Riser or Main Size

[in. (mm)]

Size of Drain Connection

[in. (mm)]

Up to 2 (50) 3⁄4(20) or larger

21⁄2(65), 3 (80), 31⁄2(90) 11⁄4(32) or larger

4 (100) and larger 2 (50) or larger


Annex language for this section from the 2016 edition appears to have been removed from this first draft. This annex language, which was new to the 2016 edition, is very useful to the user. (This annex language should also be added to A.16.4.5.1 as a pointer) Note from submitter - Terra View did not provide the option to add this comment in A.16.10.4.2.

(From 2016) A.8.16.2.4.2 Sizing the main drain connection so that it can flow the sprinkler system demand flow rate provides a practicalmeans for performing the forward flow test of the backflow device as required by 8.17.4.5.1.

Related Item

FR 636


Submitter Full Name: Chase Browning

Organization: Medford Fire Rescue

Street Address:

City:

State:

Zip:

Submittal Date: Wed Apr 12 23:29:48 EDT 2017

Committee Statement

CommitteeAction:




Additionally, Annex Section A.8.16.2.4.1 was similarly omitted without substantiation and it too


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should be retained, as Annex Section A.16.10.4.1.


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16.10.4.6 * Main Drain Test Connections.

16.10.4.6.1

Main drain test connections shall be provided at locations that will permit flow tests of water supplies andconnections.

16.10.4.6.2

Main drain test connections shall be installed that the valve can be opened wide for a sufficient time toassure a proper test without causing water damage.

16.10.4.6.3

Main drain connections shall be sized in accordance with 16.10.4.2.


During the rewrite / editing Figure A.8.17.4.1 was deleted, with no substantiation or explanation. The illustration should be reinstated as Annex Section A.16.10.4.6. The missing figure has been part of NFPA 13 for a great many years (at least 45 to my knowledge). It has stood the test of time and provides extremely valuable information / guidance. It should not be lost as part of the editing process.

Related Item

FR-644




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:






257 of 518 10/27/2017, 7:12 AM


16.14.5.1 Backflow Prevention Valves. Restore Annex language A.16.14.5.1 (A.8.17.4.5.1 in 2016)

Means shall be provided downstream of all backflow prevention valves for forward flow tests at a minimumflow rate of the system demand including hose allowance where applicable.

16.14.5.1.1

The arrangement required in 8.17.4.5.1 shall be serviceable, without requiring the owner to modify thesystem to perform the test.


Annex language for this section from the 2016 edition appears to have been removed from this first draft. This annex language, which has been in the standard for years, is very useful to the user. This annex language has always served as explanatory material for both new and retroactive installations, so I also advise the portion of the restored language related to retroactive installations be placed into a new A.28.6.5

Note from submitter - Terra View did not provide the option to add this comment in A.16.14.5.1

(From 2016 A.8.17.4.5.1) System demand refers to flow rate and pressure.This test is only concerned with testing at the proper flow rate.The full flow test of the backflow prevention valve can be performed with a test header or other connection downstream of the valve. A bypass around the check valve in the fire department connector line with a control valve in the normally closed position can be an acceptable arrangement.When flow to a visible drain cannot be accomplished, closed loop flow can be acceptable if a flowmeter or site glass is incorporatedinto the system to ensure flow. When a backflow prevention device is retroactively installed on a pipe schedule system, the revised hydraulic calculation still follows the pipe schedule method of 11.2.2 with the inclusion of friction loss for the device.

Related Item

FR 636


Submitter Full Name: Chase Browning

Organization: Medford Fire Rescue

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: Annex language for this section from the 2016 edition appears to have been removed from this firstdraft. This annex language, which has been in the standard for years, is very useful to the user. Thisannex language has always served as explanatory material for both new and retroactiveinstallations, so I also advise the portion of the restored language related to retroactive installations


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be placed into a new A.28.6.5

Note from submitter - Terra View did not provide the option to add this comment in A.16.14.5.1

(From 2016 A.8.17.4.5.1) System demand refers to flow rate and pressure.This test is onlyconcerned with testing at the proper flow rate.

The full flow test of the backflow prevention valve can be performed with a test header or otherconnection downstream of the valve. A bypass around the check valve in the fire departmentconnector line with a control valve in the normally closed position can be an acceptablearrangement.

When flow to a visible drain cannot be accomplished, closed loop flow can be acceptable if aflowmeter or site glass is incorporated

into the system to ensure flow. When a backflow prevention device is retroactively installed on apipe schedule system, the revised hydraulic calculation still follows the pipe schedule method of11.2.2 with the inclusion of friction loss for the device.


259 of 518 10/27/2017, 7:12 AM


16.7 Automated Inspection and Testing Devices and Equipment.

16.7.1

Automated inspection devices and equipment shall be as effective as a visual examination.

16.7.2

Automated testing devices and equipment shall produce the same action required by this standardto test a device.

16.7.3

Failure of automated inspection and testing devices and equipment shall not impair the operationof the system unless indicated by an audible and visual trouble signal in accordance with NFPA 72.

16.7.4

Failure of a system or component to pass automated inspection and testing devices and equipmentshall result in an audible and visual trouble signal in accordance with NFPA 72.

16.7.5

Failure of automated inspection and testing devices and equipment shall result in an audible andvisual trouble signal in accordance with NFPA 72.


The text for automated inspection and test components does not appear to be acceptance testing criteria. It is just information for selecting those types of products. Therefore the majority of the text should be relocated to Chapter 16.

Related Item

FR-723




Street Address:

City:

State:

Zip:


Committee Statement


Resolution: This information is acceptance testing criteria and should remain in Chapter 27.


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17.4.1.3.1

Sprinkler piping shall be substantially supported from the building structure, which must support the addedload of the water-filled pipe plus a minimum of 250 lb (115 kg) applied at the point of hanging, except wherepermitted by 17.4.1. 3. 1. 1, 17.4.1.1. 2, 17.4.1.3.3, and 17.4.1.4.1.

17.4.1.3.1.1*

Sprinkler piping may be attached to the panels of joists and trusses provided the weight of the water-filledpipe is less than or equal to 100 lbs. and the point of attachment is concentrically loaded.

A.17.4.1.3.1.1 See Figure A.17.4.1.3.1.1.



Screen_Shot_2017-05-09_at_6.12.18_PM.png Concentric Loading at Panels

Screen_Shot_2017-05-09_at_6.11.27_PM.png Panels Shaded in Red

Screen_Shot_2017-05-09_at_6.11.15_PM.png Panel Points Shaded in Green

Concentrated_Loads_at_Joist_Chords.pdf Vulcraft - Concentrated Loads at Joist Chords


Meet the requirements of the Steel Joist Institute. The joists and trusses already have been evaluated to support 100 lbs. at the panels so there is no need to include the additional 250 lbs. to the structure. See the attached supporting documents.

Related Item

357




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: The standard allows the placement of hangers anywhere along a joist in accordance with17.4.1.3.1. Regulating hanging at specific points should be up to the purview of the joistmanufacturer and structural engineer.


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17.4.1.3.1

Sprinkler piping shall be substantially supported from the building structure, which must support the addedload of the water-filled pipe plus a minimum of 250 250 lb (115 kg) applied at the point of hanging, exceptwhere permitted by 17.4.1.1.2, 17.4.1.3.3, and 17.4.1.4.1.


This additional value assigned to the load of the pipe does not vary. It is always just 250 lbs. This is the only paragraph that includes the phrase "a minimum of" with this variable whereas 17.1.2(1), 17.1.4.1.1, 17.1.4.1.2, Table 17.3.1(a), and 17.5.1.2(1) all simply say "plus 250 lbs".

Related Item

PI-357




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: This additional value assigned to the load of the pipe does not vary. It is always just 250 lbs. This isthe only paragraph that includes the phrase "a minimum of" with this variable whereas 17.1.2(1),17.1.4.1.1, 17.1.4.1.2, Table 17.3.1(a), and 17.5.1.2(1) all simply say "plus 250 lbs".


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17.4.3.4.4.4

Unless flexible

sprinkler

hose fittings in accordance with 17.4.1.3.3.1 and ceilings in accordance with 17.4.1.3.3.2 are used, thehanger closest to the

sprinkler

srinkler pipe shall be of a type that restrains the pipe from upward movement

of the pipe

.


Note that this issue was resolved in Committee action.

Use of an approved ceiling is important factor when used flexible hose fittings. The ceiling must be strong enough to withstand the induced thrust after fusing of a sprinkler at a pressure above 100 psi. This requirement would require other forms of branch piping to restrain against upward movement. This change distiguishes between prevention and restraint. Prevention is absolute and restraint would acknowledge minor movement while a surge clip is being compressor.

Related Item

FR-607





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: Note that this issue was resolved in Committee action.

Use of an approved ceiling is important factor when used flexible hose fittings. The ceiling must bestrong enough to withstand the induced thrust after fusing of a sprinkler at a pressure above 100psi. This requirement would require other forms of branch piping to restrain against upwardmovement. This change distiguishes between prevention and restraint. Prevention is absolute andrestraint would acknowledge minor movement while a surge clip is being compressor.


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17.4.4.9

The unsupported lengths of mains shall be in accordance with the distances in 9.2.3.4.


Delete. This section creates a conflict with the requirements of 17.4.4.10 as revised by FR-610.

Related Item

FR-609





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: Delete. This section creates a conflict with the requirements of 17.4.4.10 as revised byFR-610.


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17.6 Protection Criteria for Rack Storage of Group A Plastic Commodities Stored Up to and Including 25 ft(7.6 m) in Height.

17.6.1 Control Mode Density/Area Sprinkler Protection Criteria for Single-, Double-, and Multiple-RowRacks for Group A Plastic Commodities Stored Up to and Including 25 ft (7.6 m) in Height.

17.6.1.1 Storage 5 ft (1.5 m) or Less in Height.

For the storage of Group A plastics stored 5 ft (1.5 m) or less in height, the sprinkler design criteria formiscellaneous storage specified in Chapter 13 shall be used.

17.6.1.1.1

For storage 5 ft (1.5 m) or less in height that does not meet the definition of Miscellaneous Storage that ison solid shelf racks, in-rack sprinklers shall be provided in accordance with 17.1.5, and ceiling sprinklerprotection shall be provided in accordance with Chapter 13 .

17.6.1.2 Ceiling Sprinkler Water Demand.

See Section C.22 .


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17.6.1.2.1


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For Group A plastic commodities in cartons, encapsulated or nonencapsulated in single-, double-, andmultiple-row racks and with a clearance to ceiling up to and including 10 ft. (3.0 m), ceiling sprinkler water

demand in terms of density [gpm/ft 2 (mm/min)] and area of operation [ft 2 (m 2 )] shall be selected fromFigure 17.6.1.2.1(a) through Figure 17.6.1.2.1(f) .

Figure 17.6.1.2.1(a) Storage 5 ft to 10 ft (1.5 m to 3.0 m) in Height with Up to 10 ft (3.0 m) Clearanceto Ceiling.

Figure 17.6.1.2.1(b) Storage 15 ft (4.6 m) in Height with Up to 10 ft (3.0 m) Clearance to Ceiling.

Figure 17.6.1.2.1(c) Storage 20 ft (6.1 m) in Height with <5 ft (1.5 m) Clearance to Ceiling.

Figure 17.6.1.2.1(d) Storage 20 ft (6.1 m) in Height with 5 ft to 10 ft (1.5 m to 3.0 m) Clearance toCeiling.


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Figure 17.6.1.2.1(e) Storage 25 ft (7.6 m) in Height with <5 ft (1.5 m) Clearance to Ceiling. (See Note2.)

Figure 17.6.1.2.1(f) Storage 25 ft (7.6 m) in Height with 5 ft to 10 ft (1.5 m to 3.0 m) Clearance toCeiling. (See Note 2.)


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17.6.1.2.2

Linear interpolation of design densities and areas of application shall be permitted between storage heightswith the same clearance to ceiling.

17.6.1.2.3

No interpolation between clearance to ceiling shall be permitted.

17.6.1.2.4

An option shall be selected from the appropriate Figure 17.6.1.2.1(a) through Figure 17.6.1.2.1(f) giventhe storage height and clearance being protected. The density/area criteria at the top of each option shall beapplied to the ceiling sprinklers and the in-rack sprinklers shown in the option (if any) shall be provided.Options that do not show multiple-row racks in the figures shall not be permitted to protect multiple-row rackstorage. Notes in each figure shall be permitted to clarify options or to present additional options not shownin the figures.

17.6.1.3

For storage of Group A plastics between 5 ft and 12 ft (1.5 m and 3.7 m) in height, the installationrequirements for extra hazard systems shall apply.


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17.6.1.4 *


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Exposed unexpanded Group A plastics protected with control mode density/area sprinklers shall beprotected in accordance with one of the following:

(1) Maximum 10 ft (3.0 m) storage in a maximum 20 ft (6.1 m) high building with ceiling sprinklers

designed for a minimum 0.8 gpm/ft 2 (32.6 mm/min) density over 2500 ft 2 (232 m 2 ) and no in-racksprinklers required as shown in Figure 17.6.1.4(a)


designed for a minimum 0.45 gpm/ft 2 (18.3 mm/min) density over 2000 ft 2 (186 m 2 ) and one levelof in-rack sprinklers required at alternate transverse flues as shown in Figure 17.6.1.4(b)


designed for a minimum 0.3 gpm/ft 2 (12.2 mm/min) density over 2000 ft 2 (186 m 2 ) and one level ofin-rack sprinklers required in every transverse flue as shown in Figure 17.6.1.4(c)


designed for a minimum 0.45 gpm/ft 2 (18.3 mm/min) density over 2000 ft 2 (186 m 2 ) and one levelof in-rack sprinklers required at alternate transverse flues as shown in Figure 17.6.1.4(d)


designed for a minimum 0.3 gpm/ft 2 (12.2 mm/min) density over 2000 ft 2 (186 m 2 ) and one levelof in-rack sprinklers required in every transverse flue as shown in Figure 17.6.1.4(e)


designed for a minimum 0.6 gpm/ft 2 (24.4 mm/min) density over 2000 ft 2 (186 m 2 ) and one level ofin-rack sprinklers required at alternate transverse flues as shown in Figure 17.6.1.4(f)


designed for a minimum 0.45 gpm/ft 2 (18.3 mm/min) density over 2000 ft 2 (186 m 2 ) and one levelof in-rack sprinklers required in every transverse flue as shown in Figure 17.6.1.4(g)


designed for a minimum 0.8 gpm/ft 2 (32.6 mm/min) density over 1500 ft 2 (139 m 2 ) and one levelof in-rack sprinklers required at alternate transverse flues as shown in Figure 17.6.1.4(h)


designed for a minimum 0.6 gpm/ft 2 (24.4 mm/min 2 ) density over 1500 ft 2 (139 m 2 ) and onelevel of in-rack sprinklers required in every transverse flue as shown in Figure 17.6.1.4(i)


designed for a minimum 0.3 gpm/ft 2 (12.2 mm/min) density over 2000 ft 2 (186 m 2 ) and two levelsof in-rack sprinklers required in every transverse flue as shown in Figure 17.6.1.4(j)

(11) Maximum 25 ft (7.6 m) storage in a maximum 35 ft (11 m) high building with ceiling sprinklers

designed for a minimum 0.8 gpm/ft 2 (32.6 mm/min) density over 1500 ft 2 (139 m 2 ) and one levelof in-rack sprinklers required in every transverse flue as shown in Figure 17.6.1.4(k)

(12) Maximum 25 ft (7.6 m) storage in a maximum 35 ft (11 m) high building with ceiling sprinklers

designed for a minimum 0.3 gpm/ft 2 (12.2 mm/min) density over 2000 ft 2 (186 m 2 ) and two levelsof in-rack sprinklers required in every transverse flue as shown in Figure 17.6.1.4(l)

Figure 17.6.1.4(a) Exposed Nonexpanded Group A Plastic Up to 10 ft (3.0 m) in Height in Up to a20 ft (6.1 m) High Building with No In-Rack Sprinklers.


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Figure 17.6.1.4(b) Exposed Nonexpanded Group A Plastic Up to 10 ft (3.0 m) in Height in Up to a20 ft (6.1 m) High Building with One Level of In-Rack Sprinklers.

Figure 17.6.1.4(c) Exposed Nonexpanded Group A Plastics Up to 10 ft (3.0 m) in Height in Up to a20 ft (6.1 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.6.1.4(d) Exposed Nonexpanded Group A Plastics Up to 15 ft (4.6 m) in Height in Up to a25 ft (7.6 m) High Building with One Level of In-Rack Sprinklers.

Figure 17.6.1.4(e) Exposed Nonexpanded Group A Plastics Up to 15 ft (4.6 m) in Height in Up to a25 ft (7.6 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.6.1.4(f) Exposed Nonexpanded Group A Plastics Up to 20 ft (6.1 m) in Height in Up to a25 ft (7.6 m) High Building with One Level of In-Rack Sprinklers.

Figure 17.6.1.4(g) Exposed Nonexpanded Group A Plastics Up to 20 ft (6.1 m) in Height in Up to a25 ft (7.6 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.6.1.4(h) Exposed Nonexpanded Group A Plastics Up to 20 ft (6.1 m) in Height in Up to a30 ft (9.1 m) High Building with One Level of In-Rack Sprinklers.

Figure 17.6.1.4(i) Exposed Nonexpanded Group A Plastics Up to 20 ft in (6.1 m) Height in Up to a30 ft (9.1 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.6.1.4(j) Exposed Nonexpanded Group A Plastics Up to 20 ft (6.1 m) in Height in Up to a30 ft (9.1 m) High Building with Two Levels of Closely Spaced In-Rack Sprinklers.

Figure 17.6.1.4(k) Exposed Nonexpanded Group A Plastics Up to 25 ft (7.6 m) in Height in Up to a35 ft (10.7 m) High Building with One Level of Closely Spaced In-Rack Sprinklers.


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Figure 17.6.1.4(l) Exposed Nonexpanded Group A Plastics Up to 25 ft (7.6 m) in Height in Up to a35 ft (10.7 m) High Building with Two Levels of Closely Spaced In-Rack Sprinklers.

17.6.1.5 In-Rack Sprinkler Requirements Where Control Mode Density/Area Sprinklers Are Being Used atCeiling.

17.6.1.5.1 In-Rack Sprinkler Clearance.


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The minimum of 6 in. (150 mm) vertical clear space shall be maintained between the sprinkler deflectorsand the top of a tier of storage.

(A)

Sprinkler discharge shall not be obstructed by horizontal rack members.

17.6.1.5.2

The spacing of in-rack sprinklers shall be in accordance with Figure 17.6.1.2.1(a) through Figure17.6.1.2.1(f) .

17.6.1.5.3

In-rack sprinklers shall be located at an intersection of transverse and longitudinal flues while not exceedingthe maximum spacing rules.

17.6.1.5.4

Where distances between transverse flues exceed the maximum allowable distances, sprinklers shall beinstalled at the intersection of the transverse and longitudinal flues, and additional sprinklers shall beinstalled between transverse flues to meet the maximum distance rules.

17.6.1.5.5

Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacing rules.

17.6.1.5.6 In-Rack Sprinkler Water Demand.

The water demand for sprinklers installed in racks shall be based on simultaneous operation of the mosthydraulically remote sprinklers as follows:

(1) Eight sprinklers where only one level is installed in racks

(2) Fourteen sprinklers (seven on each top two levels) where more than one level is installed in racks

17.6.1.5.7 In-Rack Sprinkler Discharge Pressure.

Sprinklers in racks shall discharge at not less than 15 psi (1.0 bar) for all classes of commodities. (SeeSection C.19 .)

17.6.2 CMSA Sprinklers for Rack Storage of Group A Plastic Commodities Stored Up to and Including25 ft (7.6 m) in Height.

17.6.2.1

Protection of single-, double-, and multiple-row rack storage for nonexpanded Group A plastic commoditiesshall be in accordance with Table 17.6.2.1 .

Table 17.6.2.1 CMSA Sprinkler Design Criteria for Single-, Double-, and Multiple-Row Racks of Group APlastic Commodities Stored Up and Including 25 ft (7.6 m) in Height

Storage Arrangement Commodity Class Maximum Storage Height Maximum Ceiling/Roof Height K-Factor/

Orientation Type of System Number of Design Sprinklers Minimum OperatingPressure ft m ft m psi bar Single-, double-, and multiple-row racks (no open-top containers) Cartonednonexpanded plastics 20 6.1 25 7.6 11.2 (160) Upright Wet 15 50 3.4 16.8 (240) Upright Wet 15 22 1.5 19.6(280) Pendent Wet 15 16 1.1 30 9.1 11.2 (160) Upright Wet

Wet 30

20 50

75 3.4 5.2 16.8 (240) Upright Wet 15* 22 1.5 19.6 (280) Pendent Wet 15 16 1.1 25 7.6 30 9.1 11.2 (160)Upright Wet 15 + 1 level of in-rack 50 3.4 16.8 (240) Upright Wet 15* 22 1.5 19.6 (280)Pendent Wet 15 16 1.1 25 7.6 35 11 11.2 (160) Upright Wet 30 + 1 level of in-rack 50 3.4 Wet 20 + 1 level ofin-rack 75 5.2 16.8 (240) Upright Wet 30 + 1 level of in-rack 22 1.5 Wet 20 + 1 level of in-rack 35 2.4 19.6(280) Pendent Wet 15 25 1.7 20 6.1 25 7.6 11.2 (160) Upright Wet 15 50 3.4 Exposed nonexpandedplastics 16.8 (240) Upright Wet 15 22 1.5 20 6.1 30 9.1 11.2 (160) Upright Wet 30 50 3.4 Wet 20 75 5.2 16.8(240) Upright Wet 15* 22 1.5 25 7.6 30 9.1 11.2 (160) Upright Wet 15 + 1 level of in-rack 50 3.4 16.8 (240)Upright Wet 15* 22 1.5 25 7.6 35 11 11.2 (160) Upright Wet 30 + 1 level of in-rack 50 3.4 Wet 20 + 1 level of


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in-rack 75 5.2 16.8 (240) Upright Wet 30 + 1 level of in-rack 22 1.5 Wet 20 + 1 level of in-rack 35 2.4

*Minimum 8 ft (2.4 m) aisle.

17.6.2.1.1

CMSA sprinklers shall not be permitted to protect storage on solid shelf racks unless the solid shelf racksare protected with in-rack sprinklers in accordance with 17.1.5.

17.6.2.1.1.1

Where solid shelves are used, in-rack sprinklers shall be installed in every level below the highest solidshelf.

17.6.2.2

Protection shall be provided as specified in Table 17.6.2.1 or appropriate NFPA standards in terms ofminimum operating pressure and the number of sprinklers to be included in the design area.

17.6.2.3 Open Wood Joist Construction.

17.6.2.3.1

Where CMSA sprinklers are installed under open wood joist construction, firestopping in accordance with17.6.2.3.2 shall be provided or the minimum operating pressure of the sprinklers shall be 50 psi (3.4 bar)for a K-11.2 (160) sprinkler or 22 psi (1.5 bar) for a K-16.8 (240) sprinkler.

17.6.2.3.2

Where each joist channel of open wood joist construction is fully firestopped to its full depth at intervals notexceeding 20 ft (6.1 m), the lower pressures specified in Table 17.6.2.1 shall be permitted to be used.

17.6.2.4 Preaction Systems.

For the purpose of using Table 17.6.2.1 , preaction systems shall be classified as dry pipe systems.

17.6.2.5

Building steel shall not require special protection where Table 17.6.2.1 is applied as appropriate for thestorage configuration.

17.6.2.6 In-Rack Sprinkler Requirements Where CMSA Sprinklers Are Used at Ceiling.

17.6.2.6.1

In-rack sprinklers shall be installed at the first tier level at or above one-half of the storage height.

17.6.2.6.2

The minimum of 6 in. (150 mm) vertical clear space shall be maintained between the sprinkler deflectorsand the top of a tier of storage.

(A)

Sprinkler discharge shall not be obstructed by horizontal rack members.

17.6.2.6.3

In-rack sprinklers shall be located at an intersection of transverse and longitudinal flues.

17.6.2.6.4

The maximum horizontal distance between in-rack sprinklers shall be 5 ft (1.5 m).

17.6.2.6.5

Where distances between transverse flues exceed the maximum allowable distances, sprinklers shall beinstalled at the intersection of the transverse and longitudinal flues, and additional sprinklers shall beinstalled between transverse flues to meet the maximum distance rules.

17.6.2.6.6

Where no transverse flues exist, in-rack sprinklers shall not exceed the maximum spacing rules.

17.6.2.6.7 In-Rack Sprinkler Water Demand.

The water demand for sprinklers installed in racks shall be based on simultaneous operation of the mosthydraulically remote eight sprinklers.


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17.6.2.6.8 In-Rack Sprinkler Discharge Pressure.

Sprinklers in racks shall discharge at not less than 15 psi (1.0 bar) for all classes of commodities. (SeeSection C.19 .)

17.6.3 Special Design for Rack Storage of Plastics Commodities Stored Up to and Including 25 ft (7.6 m)in Height.

17.6.3.1 Slatted Shelves.

17.6.3.1.1

Slatted rack shelves shall be considered equivalent to solid rack shelves where the shelving is notconsidered open rack shelving or where the requirements of 17.6.3.1 are not met. (See Section C.20 .)

17.6.3.1.2

A wet pipe system that is designed to provide a minimum of 0.6 gpm/ft 2 (24.4 mm/min) density over a

minimum area of 2000 ft 2 (186 m 2 ) or K-14.0 (200) ESFR sprinklers operating at a minimum of 50 psi(3.4 bar), K-16.8 (240) sprinklers operating at a minimum of 32 psi (2.2 bar), or K-25.2 (360) ESFRsprinklers operating at a minimum of 15 psi (1.0 bar) shall be permitted to protect single- and double-rowracks with slatted rack shelving racks where all of the following conditions are met:

(1) Sprinklers shall be K-11.2 (160), K-14.0 (200), or K-16.8 (240) orifice spray sprinklers with atemperature rating of ordinary, intermediate, or high and shall be listed for storage occupancies orshall be K-14.0 (200), K-16.8 (240), or K-25.2 (360) ESFR.

(2) The protected commodities shall be limited to Class I through Class IV, Group B plastics, Group Cplastics, cartoned (expanded and unexpanded) Group A plastics, and exposed (unexpanded) Group Aplastics.

(3) Slats in slatted rack shelving shall be a minimum nominal 2 in. (50 mm) thick by maximum nominal6 in. (150 mm) wide with the slats held in place by spacers that maintain a minimum 2 in. (50 mm)opening between each slat.

(4) Where K-11.2 (160), K-14.0 (200), or K-16.8 (240) orifice sprinklers are used, there shall be no slattedshelf levels in the rack above 12 ft (3.7 m). Open rack shelving using wire mesh shall be permitted forshelf levels above 12 ft (3.7 m).

(5) Transverse flue spaces at least 3 in. (75 mm) wide shall be provided at least every 10 ft (3.0 m)horizontally.

(6) Longitudinal flue spaces at least 6 in. (150 mm) wide shall be provided for double-row racks.Longitudinal flue spaces shall not be required when ESFR sprinklers are used.

(7) The aisle widths shall be at least 7 1 ⁄ 2 ft (2.3 m).

(8) The maximum roof height shall be 27 ft (8.2 m) or 30 ft (9.1 m) where ESFR sprinklers are used.

(9) The maximum storage height shall be 20 ft (6.1 m).

(10) Solid plywood or similar materials shall not be placed on the slatted shelves so that they block the 2 in.(50 mm) spaces between slats, nor shall they be placed on the wire mesh shelves.


It appears that section 17.6 includes requirements from the 2016 edition, which were intended to be relocated to chapter 25 for in-rack sprinklers. The requirements of Section 17.6 have been relocated to 25.9.3 as Rack Storage of Group A Commodities Up To and Including 25 ft (7.6m) in Height

Related Item

FR-645




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Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: It appears that section 17.6 includes requirements from the 2016 edition, which were intended tobe relocated to chapter 25 for in-rack sprinklers. The requirements of Section 17.6 have beenrelocated to 25.9.3 as Rack Storage of Group A Commodities Up To and Including 25 ft (7.6m) inHeight


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18.2.3.1

The flexible couplings shall be installed as follows:

(1)

(2)

(3)

(4) Within 12 in. (300 mm) above and within 24 in. (600 mm) below the floor in multistory buildings

(5) * In risers up to 7 ft in length terminating above the roof assembly or top landing, the flexiblecoupling shall not be required above the assembly.

(6) On both sides of concrete or masonry walls within 1 ft (300 mm) of the wall surface, unless clearanceis provided in accordance with 18.4

(7)

(8) Within 24 in. (600 mm) of the top of drops exceeding 15 ft (4.6 m) in length to portions of systemssupplying more than one sprinkler, regardless of pipe size

(9) Within 24 in. (600 mm) above and 24 in. (600 mm) below any intermediate points of support for a riseror other vertical pipe

A.18.2.3.1(2)(a). See Figures A.18.2.3.1(2)(a) (Ken Wagoner e-mailed revised drawings that were notincluded as annex material. PI - 485)


When standpipe risers terminate at the top floor, the coupling above the floor level provides no benefit for the protection of pipe.

Related Item

485




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



* Within 24 in. (600 mm) of the top and bottom of all risers, unless the following provisions are met:

In risers less than 3 ft (900 mm) in length, flexible couplings shall be permitted to be omitted.

In risers 3 ft to 7 ft (900 mm to 2.1 m) in length, one flexible coupling shall be adequate.

* Within 24 in. (600 mm) of building expansion joints


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Statement: When standpipe risers terminate at the top floor, the coupling above the floor level provides nobenefit for the protection of pipe.


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18.5.5.11

The lateral sway bracing required by requirements of 18.5.5 shall be permitted to be omitted when18.5.5.11.1 for branch lines or 18.5.5.11.2 for mains is met.

18.5.5.11.1

Branch lines shall comply with the following:The branch lines shall be individually supported by wraparoundu-hooks or u-hooks arranged

not apply where U type hooks of the wraparound type or those U type hooks arranged to keep pipe tightto the underside of the structural

element provided the legs are bent out at least 30 degrees from the vertical and the maximum length ofeach leg and the rod size satisfies the conditions of Table 18.5.11.8(a) , Table 18.5.11.8(b) , and Table18.5.11.8(c) .

At least 75 percent of all the hangers on the branch line shall meet the requirements of 18.5.5.11.2(1) .

Consecutive hangers on the branch line shall not be permitted to exceed the limitation in 18.5.5.11.2(1) .

18.5.5.11.2

Mains shall comply with all the following:The main piping shall be individually supported by wraparoundu-hooks or u-hooks arranged to keep pipe tight to the underside of the structural element

element shall be permitted to be used to satisfy the requirements for lateral sway bracing, provided thelegs are bent out at

least

least 30 degrees from the vertical and the maximum length of each

leg

leg and the rod size satisfies the conditions of Table 18.5.11.8(a) , Table 18.5.11.8(b) ,

and

and Table 18.5.11.8(c) .

At least 75 percent of all the hangers on the main shall meet the requirements of 18.5.5.11.2(1) .

Consecutive hangers on the main shall not be permitted to exceed the limitation in 18.5.5.11.2(1) .

The seismic coefficient ( C p ) shall not exceed 0.5.

The nominal pipe diameter shall not exceed 6 in. (152 mm) for feed mains and 4 in. (102 mm) for crossmains.

Hangers shall not be omitted in accordance with 17.4.4.3 , 17.4.4.4 , or 17.4.4.5 .



Revert to 2016 text and modify reference to 18.5.5 (old 9.3.5.5). The committee voted to resolve theactions of PI-101 and PI-79, which resulted in FR-617. These changes should not be included in thedocument as shown.

Related Item

FR-617



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Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: The first draft language provides needed restrictions so that some sway brace mechanics areaddressed during the sprinkler design process.


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Public Comment No. 210-NFPA 13-2017 [ Sections 18.5.5.11.1, 18.5.5.11.2 ]

Sections 18.5.5.11.1, 18.5.5.11.2

18.5.5.11.1

Branch lines shall comply with the following:

(1) The branch lines shall be individually supported by wraparound u-hooks or u-hooks arranged to keeppipe tight to the underside of the structural element provided the legs are bent out at least 30 degreesfrom the vertical and the maximum length of each leg and the rod size satisfies the conditions of Table18.5.11.8(a), Table 18.5.11.8(b), and Table 18.5.11.8(c).

(2) At least 75 percent of all the hangers on the branch line shall meet the requirements of 18.5.5.11.2(1).

(3) Consecutive hangers on the branch line shall not be permitted to exceed the limitation in18.5.5.11.2(1).

18.5.5.11.2

Mains shall comply with all the following:

(1) The main piping shall be individually supported by wraparound u-hooks or u-hooks arranged to keeppipe tight to the underside of the structural element provided the legs are bent out at least 30 degreesfrom the vertical and the maximum length of each leg and rod size satisfies the conditions of Table18.5.11.8(a), Table 18.5.11.8(b), and Table 18.5.11.8(c).

(2) At least 75 percent of all the hangers on the main shall meet the requirements of 18.5.5.11.2(1).

(3) Consecutive hangers on the main shall not be permitted to exceed the limitation in 18.5.5.11.2(1).

(4) The seismic coefficient (Cp) shall not exceed 0.5.

(5) The nominal pipe diameter shall not exceed 6 in. (152 mm) for feed mains and 4 in. (102 mm) for crossmains.

(6) Hangers shall not be omitted in accordance with 17.4.4.3, 17.4.4.4, or 17.4.4.5.


The pipe may be laid on top of the structural element. This would be common in sprinkler retrofit applications where a suspended ceiling is attached to the underside the the joists.

Related Item

79




Street Address:

City:

State:

Zip:


Committee Statement

Committee Rejected but see related SR


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Action:


Statement: The pipe may be laid on top of the structural element. This would be common in sprinkler retrofitapplications where a suspended ceiling is attached to the underside the the joists.


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18.5.8.1*

Tops of risers exceeding 3 ft (900 mm) in length shall be provided with a four-way brace.

18.5.8.1.1* Risers up to 7 ft in length terminating above the roof assembly or top landing, the four-way braceshall not be required.

A.18.5.8.1.1 See Figures


When fire department connections, standpipe risers, or similar terminate at the top floor or above the roof level, the four-way brace does not provide any benefit.

Seismic Application - Design Data 12.26 Rev. A (Page 9)Victaulic grooved products have consistently demonstrated the ability to withstand considerable forces during earthquakes. When exposed to bending forces, they have remained intact. A bending moment will occur when the joint deflects beyond its maximum allowable angular deflection.

Minimum Required Bending Moment at Coupling on Standard Wall PipeCoupling Size 4 in. - Bending Moment 3645 ft-lb Coupling Size 6 in. - Bending Moment 7085 ft-lb

Related Item

485




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: When fire department connections, standpipe risers, or similar terminate at the top floor or abovethe roof level, the four-way brace does not provide any benefit.

Seismic Application - Design Data 12.26 Rev. A (Page 9)

Victaulic grooved products have consistently demonstrated the ability to withstand considerableforces during earthquakes. When exposed to bending forces, they have remained intact. A bendingmoment will occur when the joint deflects beyond its maximum allowable angular deflection.

Minimum Required Bending Moment at Coupling on Standard Wall Pipe


288 of 518 10/27/2017, 7:12 AM

Coupling Size 4 in. - Bending Moment 3645 ft-lb

Coupling Size 6 in. - Bending Moment 7085 ft-lb


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18.5.12 *

Fasteners.

18.

[Revert to 2016 language and associated figures and renumber accordingly.]

9.3. 5.12.1

The designated angle category for the fastener(s) used in the sway brace installation shall bedetermined in

accordance

accordance with Figure

18

9 . 3. 5.12.1 .

Figure 18

9 .

5.12.1 Designation of Angle Category Based on Angle of Sway Brace and Fastener Orientation.

18.

3. 5.12.2 *

For individual fasteners, unless

alternative allowable

alternate allowable loads are determined and certified by a registered

professional

professional engineer, the loads determined in

18


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9 . 3. 5.9 shall not

exceed

exceed the allowable loads provided in Table

18.5.12.2(a) through Table 18.5.12.2(i) or 18.5.12.7 .

Table 18.5.12.2(a) Maximum Load for Wedge Anchors in 3000 psi (207 bar) Lightweight CrackedConcrete on Metal Deck

Wedge Anchors in 3000 psi Lightweight Cracked Concrete on Metal Deck (lb) Diameter

(in.) Embedment

(in.) A B C D E F G H I Pr * Pr Pr Pr Pr Pr Pr Pr Pr ≤2.0 ≤1.1 ≤0.7 ≤1.2 ≤1.1 ≤1.1 ≤1.4 ≤0.

9

≤0

.

8

3

⁄ 8 2 117 184 246 — — — — — — 1 ⁄ 2 2 3 ⁄ 8 164 257 344

— — — — — — 5 ⁄ 8 3 1 ⁄ 8 214 326 424 — — — — — — Diameter

.

(in.) Embedment

(in.) A B C D E F G H I Pr Pr Pr Pr Pr Pr Pr Pr Pr 2.1–3.

5

1

.

2–1.8 0.8–1.0 1.3–1.7 1.2–1.8 1.2–2.0 1.5–1.9 1.0–1.3 0.9–1.1 3 ⁄ 8 2 69 127 196

— — — — — — 1 ⁄ 2 2 3 ⁄ 8 97 178 274

— — — — — — 5 ⁄ 8 3 1 ⁄ 8 133 232 346 — — — — — — Diameter

(in.) Embedment

(in.) A B C D E F G H I Pr Pr Pr Pr Pr Pr Pr Pr Pr 3.6–5.0 1.9–2.5 1.1–1.3 1.8–2.2 1.9–2.5 2.1–2.

— — — — — — 1 ⁄ 2 2 3 ⁄ 8 67 136 228

— — — — — — 5 ⁄ 8 3 1 ⁄ 8 93 179 292 — — — — — —Diameter

(in.) Embedment


— — — — — — 1 ⁄ 2 2 3 ⁄ 8 51 106 196

— — — — — — 5 ⁄ 8 3 1 ⁄ 8 71 146 252— — — — — —


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* Pr = Prying Factor Range. (Refer to Annex for additional information.)

1 lb = 0.45 kg

Table 18.5.12.2(b) Maximum Load for Wedge Anchors in 3000 psi (207 bar) Lightweight CrackedConcrete

Wedge Anchors in 3000 psi LightweightCracked Concrete (lb) Diameter

(in.) Embedment

(in.) A B C D E F G H I Pr * Pr Pr Pr Pr Pr Pr Pr Pr ≤2.0 ≤1.1 ≤0.7 ≤1.2 ≤1.1 ≤1.1 ≤1.4 ≤0.9 ≤0.8

(in.) Embedment




Revert to 2016 text and modify reference to 18.5.12 (old 9.3.5.12). The committee voted to resolve theactions of PI-586, which resulted in FR-630. These changes should not be included in thedocument as shown.

Related Item

FR-630





Street Address:

City:

State:

Zip:


Committee Statement


Resolution: The tables have been revised and new tables added in section 18.5.12 see SR#12.


293 of 518 10/27/2017, 7:12 AM


18.6.3.1

The location of the restraint from end of the line shall not be greater than 36 in. (900 mm) for 1 in. (25 mm)

pipe, 48 in. (1219 mm) for 1 1 ⁄ 4 in. (32 mm) pipe, and 60 in. (1.5 m) for 1 1 ⁄ 2 in. (40 mm) or largerpipe.


Delete. The addition of this language is too restrictive and does not allow flexibility.

Related Item

FR-620





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: Section 18.6.3.1 provides the spacing requirements that are applicable to 18.6.3 and need toremain in the standard to provide guidance to users.


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19.2 General Design Approaches.

The requirements of Section 19.2 shall apply to all sprinkler systems unless modified by a specific sectionof Chapter 11 19 or Chapter 12 20 .

19.2.1

A building or portion thereof shall be permitted to be protected in accordance with any applicable designapproach at the discretion of the designer.

19.2.2* Adjacent Hazards or Design Methods.

For buildings with two or more adjacent hazards or design methods, the following shall apply:

(1) Where areas are not physically separated by a draft curtain, barrier, or partition capable of delayingheat from a fire in one area from fusing sprinklers in the adjacent area, the required sprinkler protectionfor the more demanding design basis shall extend 15 ft (4.6 m) beyond its perimeter.

(2) The requirements of 19.2.2(1) shall not apply where the areas are separated by a draft curtain, orbarrier located above an aisle, where the aisle has a minimum 2 ft (600 mm) horizontal separation fromthe adjacent hazard on each side, or a partition that is capable of delaying heat from a fire in one areafrom fusing sprinklers in the adjacent area.

(3) The requirements of 19.2.2(1) shall not apply to the extension of more demanding criteria from anupper ceiling level to beneath a lower ceiling level where the difference in height between the ceilinglevels is at least 2 ft (600 mm), located above an aisle, where the aisle has a minimum 2 ft (600 mm)horizontal separation from the adjacent hazard on each side.

19.2.3

For hydraulically calculated systems, the total system water supply requirements for each design basisshall be determined in accordance with the procedures of Section 19.6 unless modified by a section ofChapter 11 19 or Chapter 12 20 .

19.2.4 Water Demand.

19.2.4.1*

The water demand requirements shall be determined from the following:

(1) Occupancy hazard fire control approach and special design approaches of Chapter 11

(2) Storage design approaches of Chapter 12 20 through Chapter 20 25

(3) Special occupancy approaches of Chapter 22 26

19.2.4.2*

The minimum water demand requirements for a sprinkler system shall be determined by adding the hosestream allowance to the water demand for sprinklers.

19.2.5 Water Supplies.

19.2.5.1

The minimum water supply shall be available for the minimum duration specified in Chapter 11.

19.2.5.2*

Tanks shall be sized to supply the equipment that they serve.

19.2.5.3*

Pumps shall be sized to supply the equipment that they serve.

19.2.6 Hose Allowance.


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19.2.6.1 Systems with Multiple Hazard Classifications.

For systems with multiple hazard classifications, the hose stream allowance and water supply duration shallbe in accordance with one of the following:

(1) The water supply requirements for the highest hazard classification within the system shall be used.

(2) The water supply requirements for each individual hazard classification shall be used in thecalculations for the design area for that hazard.

(3)

19.2.6.2*

Water allowance for outside hose shall be added to the sprinkler requirement at the connection to the citymain or a private fire hydrant, whichever is closer to the system riser.

19.2.6.3

Where inside hose connections are planned or are required, the following shall apply:

(1) A total water allowance of 50 gpm (190 L/min) for a single hose connection installation shall be addedto the sprinkler requirements.

(2) A total water allowance of 100 gpm (380 L/min) for a multiple hose connection installation shall beadded to the sprinkler requirements.

(3) The water allowance shall be added in 50 gpm (190 L/min) increments beginning at the most remotehose connection, with each increment added at the pressure required by the sprinkler system designat that point.

19.2.6.3.1

Where the system is a combined sprinkler/standpipe system (Class I or Class III) and the building is fullysprinklered in accordance with NFPA 13, no inside hose demand shall be required at any of the standpipeoutlets.

19.2.6.4*

When hose valves for fire department use are attached to wet pipe sprinkler system risers in accordancewith 16.15.2, the following shall apply:

(1) The sprinkler system demand shall not be required to be added to standpipe demand as determinedfrom NFPA 14.

(2) Where the combined sprinkler system demand and hose stream allowance of Table 19.3.3.1.2 exceedsthe requirements of NFPA 14, this higher demand shall be used.

(3) For partially sprinklered buildings, the sprinkler demand, not including hose stream allowance, asindicated in Figure 19.3.3.1.1 shall be added to the requirements given in NFPA 14.

19.2.7* High Volume Low Speed (HVLS) Fans.

The installation of HVLS fans in buildings equipped with sprinklers, including ESFR sprinklers, shall complywith the following:

(1) The maximum fan diameter shall be 24 ft (7.3 m).

(2) The HVLS fan shall be centered approximately between four adjacent sprinklers.

(3) The vertical clearance from the HVLS fan to sprinkler deflector shall be a minimum of 3 ft (0.9 m).

(4) All HVLS fans shall be interlocked to shut down immediately upon a waterflow alarm. Where thebuilding is protected with a fire alarm system, this interlock shall be in accordance with therequirements of NFPA 72.


In Sections 19.2, 19.2.3 and 19.2.4.1, the references are from the 2016 edition of the NFPA 13. These matters need to be revised to match the new chapter structure for the standard.

* For systems with multiple hazard classifications where the higher classification only lies within single

rooms less than or equal to 400 ft2 (37 m2) in area with no such rooms adjacent, the water supplyrequirements for the principal occupancy shall be used for the remainder of the system.


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Related Item

FR-647




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: In Sections 19.2, 19.2.3 and 19.2.4.1, the references are from the 2016 edition of the NFPA 13.These matters need to be revised to match the new chapter structure for the standard.


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19.3.3.1.1.1

The maximum design area for miscellaneous and low-piled storage shall be 3000 ft2 (279 m2).


This text appears as 19.3.3.1.2.1. It should be relocated as a subsection of the density/area curve items; not water supply and hose stream allowances.

See also PC for addition of former 13.2.1 truncated density/area table in annex.



Public Comment No. 172-NFPA 13-2017 [Section No. 19.3.3.1.2.1]


Related Item

PI-167





Street Address:

City:

State:

Zip:


Committee Statement


Resolution: This is redundant text and has been added to Chapter 4, section 4.3.1.7.2.


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19.3.3.1.2.1

The maximum design area for miscellaneous and low-piled storage shall be 3000 ft 2 (279 m 2 ).


Relocate to 19.3.3.1.1.1 for clarity.



Public Comment No. 170-NFPA 13-2017 [New Section after 19.3.3.1.1] Suggested relocation for clarity


Related Item

PI-167





Street Address:

City:

State:

Zip:


Committee Statement



Statement: This section has been deleted and the text has been relocated to Chapter 4.


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19.3.3.2.3.1

Where listed quick-response sprinklers, including extended coverage quick-response sprinklers, are usedthroughout a system or portion of a system having the same hydraulic design basis, the system area ofoperation shall be permitted to be reduced without revising the density as indicated in Figure 19.3.3.2.3.1when all of the following conditions are satisfied:

(1) Wet pipe system

(2) Light hazard or ordinary hazard occupancy

(3) 20 ft (6.1 m) maximum ceiling height

(4) No unprotected ceiling pockets as allowed by 10.2.9 and 11.2.7 exceeding 32 ft2 (3.0 m2)

(5) No unprotected areas above cloud ceilings as allowed by 9.2.7

Figure 19.3.3.2.3.1 Design Area Reduction for Quick-Response Sprinklers. (in the figure, makesure the "less than or equal to" sign is printed correctly before "20 ft" on the third note)


In the figure that was re-drawn after the reorganization, the sign did not print correctly in the note, which alters the meaning of the figure incorrectly.

Related Item

FR647



300 of 518 10/27/2017, 7:12 AM



Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: In the figure that was re-drawn after the reorganization, the sign did not print correctly in thenote, which alters the meaning of the figure incorrectly.


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Public Comment No. 68-NFPA 13-2017 [ Sections 19.6, 19.7, 19.8, 19.9 ]

Move Sections 19.6, 19.7, 19.8, 19.9

19.6

to a new Chapter 27 and renumber the proposed Chapter 27 and all subsequent chapters.

27.2 Hydraulic Calculation Procedures.

19 27 .6 2 .1* General.

19 27 .6 2 .1.1

A calculated system for a building, or a calculated addition to a system in an existing sprinklered building,shall supersede the rules in this standard governing pipe schedules, except that all systems shall continueto be limited by area.

19 27 .6 2 .1.2

Pipe sizes shall be no less than 1 in. (25 mm) nominal for black or galvanized steel piping and 3⁄4 in.(20 mm) nominal for copper tubing or brass, stainless steel, or nonmetallic piping listed for fire sprinklerservice unless permitted by 28.5 and 28.6.

19 27 .6 2 .1.3

The size of pipe, number of sprinklers per branch line, and number of branch lines per cross main shallotherwise be limited only by the available water supply.

19 27 .6 2 .1.4*

Unless required by other NFPA standards, the velocity of water flow shall not be limited when hydrauliccalculations are performed using the Hazen–Williams or Darcy Weisbach formulas.

19 27 .6 2 .1.5

However, sprinkler spacing and all other rules covered in this and other applicable standards shall beobserved.

19 27 .6 2 .1.6

Hydraulic calculations shall extend to the effective point of the water supply where the characteristics of thewater supply are known.

19 27 .6 2 .2 Formulas.

19 27 .6 2 .2.1 Friction Loss Formula.

19 27 .6 2 .2.1.1

Pipe friction losses shall be determined on the basis of the Hazen–Williams formula, as follows:

[19 27 .4 2 .2.1

where:

p = frictional resistance (psi/ft of pipe)

Q = flow (gpm)

C = friction loss coefficient

d = actual internal diameter of pipe (in.)


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19 27 .6 2 .2.1.2

For SI units, the following equation shall be used:

[19 27 .4 2 .2.1

where:

pm = frictional resistance (bar/m of pipe)

Qm = flow (L/min)

C = friction loss coefficient

dm = actual internal diameter (mm)

19 27 .6 2 .2.1.3

For antifreeze systems greater than 40 gal (150 L) in size, the friction loss shall also be calculated using theDarcy–Weisbach formula:

[19 27 .4 2 .2.1

where:

ΔP = friction loss (psi)

f = friction loss factor from Moody diagram

l = length of pipe or tube (ft)

ρ = density of fluid (lb/ft3)

Q = flow in pipe or tube (gpm)

d = inside diameter of tube (in.)

19 27 .6 2 .2.2 Velocity Pressure Formula.

Velocity pressure shall be determined on the basis of the following formula:

[19 27 .4 2 .2.2

where:

Pv = velocity pressure (psi) (SI, 1 psi = 0.0689 bar)

Q = flow (gpm) (SI, 1 gal = 3.785 L)

D = inside diameter (in.) (SI, 1 in. = 25.4 mm)

19 27 .6 2 .2.3 Normal Pressure Formula.

Normal pressure (Pn) shall be determined on the basis of the following formula:

[19.4.2.3]

where:

Pn = normal pressure

Pt = total pressure [psi (bar)]

Pv = velocity pressure [psi (bar)]

19 27 .6 2 .2.4 Hydraulic Junction Points.

19 27 .6 2 .2.4.1

Pressures at hydraulic junction points shall balance within 0.5 psi (0.03 bar).


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19 27 .6 2 .2.4.2

The highest pressure at the junction point, and the total flows as adjusted, shall be carried into thecalculations.

19 27 .6 2 .2.4.3

Pressure balancing shall be permitted through the use of a K-factor developed for branch lines or portionsof systems using the formula in 19.6.2.5.

19 27 .6 2 .2.5 K-Factor Formula.

K-factors, flow from an orifice, or pressure from an orifice shall be determined on the basis of the followingformula:

[19 27 .4 2 .2.5

where:

Kn = equivalent K at a node

Q = flow at the node

P = pressure at the node

19 27 .6 2 .3 Equivalent Pipe Lengths of Valves and Fittings.

19 27 .6 2 .3.1 Pipe and Fittings.


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19 27 .6 2 .3.1.1

Table 19 27 .6 2 .3.1.1 shall be used to determine the equivalent length of pipe for fittings and devicesunless manufacturer’s test data indicate that other factors are appropriate.

Table 19 Table 27 .6 2 .3.1.1 Equivalent Schedule 40 Steel Pipe Length Chart

Fittings and Valves Expressed in Equivalent Fe

Fittingsand

Valves

1⁄2 in. 3⁄4 in. 1 in. 11⁄4 in. 11⁄2 in. 2 in. 21⁄2 in. 3 in. 31⁄2 in. 4 in.

(15 mm) (20 mm) (25 mm) (32 mm) (40 mm) (50 mm) (65 mm) (80 mm) (90 mm) (100 mm)

45°elbow

— 1 (0.3) 1 (0.3) 1 (0.3) 2 (0.6) 2 (0.6) 3 (0.9) 3 (0.9) 3 (0.9) 4 (1.2)

90°standard

elbow1 (0.3) 2 (0.6) 2 (0.6) 3 (0.9) 4 (1.2) 5 (1.5) 6 (1.8) 7 (2.1) 8 (2.4)

10

(3)

90°long-turn

elbow0.5 (0.2) 1 (0.3) 2 (0.6) 2 (0.6) 2 (0.6) 3 (0.9) 4 (1.2) 5 (1.5) 5 (1.5) 6 (1.8)

Tee orcross(flow

turned90°)

3 (0.9) 4 (1.2) 5 (1.5) 6 (1.8) 8 (2.4)

10

(3)

12 (3.7) 15 (4.6) 17 (5.2) 20 (6.1)

Butterflyvalve

— — — — — 6 (1.8) 7 (2.1)

10

(3)

— 12 (3.7)

Gatevalve

— — — — — 1 (0.3) 1 (0.3) 1 (0.3) 1 (0.3) 2 (0.6)

Vanetype flow

switch 6 (1.8) 9 (2.7) 10 (3) 14 (4.3) 17 (5.2) 22 (6.7)

Swingcheck*

— — 5 (1.5) 7 (2.1) 9 (2.7) 11 (3.3) 14 (4.3) 16 (4.9) 19 (5.8) 22 (6.7)

Note: Information on 1⁄2 in. pipe is included in this table only because it is allowed under 8.15.19.4 and8.15.19.5 (Note - Need to correct these section references) .

*Due to the variation in design of swing check valves, the pipe equivalents indicated in this table areconsidered average.

19 27 .6 2 .3.1.2

For saddle-type fittings having friction loss greater than that shown in Table 19.6.3.1.1, the increasedfriction loss shall be included in hydraulic calculations.

19 27 .6 2 .3.1.3 Equivalent Length Modifier.

19 27 .6 2 .3.1.3.1

For internal pipe diameters different from Schedule 40 steel pipe [Schedule 30 for pipe diameters 8 in.(200 mm) and larger], the equivalent length shown in Table 19.6.3.1.1 shall be multiplied by a factor derivedfrom the following formula:

[19 27 .4 2 .3.1


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19 27 .6 2 .3.1.3.2

The factor thus obtained shall be further modified as required by Table 19.6.3.1.1. This table shall apply toother types of pipe listed in Table 19.6.3.1.1 only where modified by factors from 19.6.3.1.1 and 19.6.3.2.

19 27 .6 2 .3.2 C Factors.

Table 19 27 .6 2 .3.1.1 shall be used with a Hazen–Williams C factor of 120 only.

19 27 .6 2 .3.2.1

For other values of C, the values in Table 19 27 .6 2 .3.1.1 shall be multiplied by the factors indicated inTable 19 27 .6 2 .3.2.1.

Table 19 Table 27 .6 2 .3.2.1 C Value Multiplier

Value of C 100 130 140 150

Multiplying factor 0.713 1.16 1.33 1.51

Note: These factors are based upon the friction loss through the fitting being independent of the C factoravailable to the piping.

19 27 .6 2 .3.3 Valves.

Specific friction loss values or equivalent pipe lengths for alarm valves, dry pipe valves, deluge valves,strainers, and other devices shall be made available to the authority having jurisdiction.

19 27 .6 2 .3.4

Hydraulic design calculations shall include a design area selected to include ceiling sprinklers adjacent tothe water curtain.

19 27 .6 2 .3.5 Differing Values.

Specific friction loss values or equivalent pipe lengths for listed fittings not in Table 7.4.1 (Note: needcorrect section reference) shall be used in hydraulic calculations where these losses or equivalent pipelengths are different from those shown in Table 19 27 .6 2 .3.1.1.

19 27 .6 2 .4* Calculation Procedure.

19 27 .6 2 .4.1*

For all systems the design area shall be the hydraulically most demanding based on the criteria ofChapter 11, Chapter 12, (Note: Need correct chapter references) or the special design approaches inaccordance with the requirements of Chapter 22 (Note: need correct reference) .

19 27 .6 2 .4.1.1 Room Design Method.

Where the design is based on the room design method, the calculation shall be based on the room andcommunicating space, if any, that is hydraulically the most demanding.

19 27 .6 2 .4.2 Density/Area Method.

19 27 .6 2 .4.2.1*

Where the design is based on the density/area method, the design area shall be a rectangular area havinga dimension parallel to the branch lines at least 1.2 times the square root of the area of sprinkler operation(A) used, which shall permit the inclusion of sprinklers on both sides of the cross main.

19 27 .6 2 .4.2.2

Any fractional sprinkler shall be carried to the next higher whole sprinkler.

19 27 .6 2 .4.2.3

In systems having branch lines with an insufficient number of sprinklers to fulfill the 1.2 requirement, thedesign area shall be extended to include sprinklers on adjacent branch lines supplied by the same crossmain.

19 27 .6 2 .4.2.4*

Where the available floor area for a specific area/density design criteria, including any extension of area asrequired by 19.2.2 and Section 20.10, (Note: need correct section references) is less than the requiredminimum design area, the design area shall be permitted to only include those sprinklers within theavailable design area.


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19 27 .6 2 .4.2.5

Where the total design discharge from these operating sprinklers is less than the minimum requireddischarge determined by multiplying the required design density times the required minimum design area,an additional flow shall be added at the point of connection of the branch line to the cross main furthestfrom the source to increase the overall demand, not including hose stream allowance, to the minimumrequired discharge.

19 27 .6 2 .4.3 CMSA Sprinkler Method.

19 27 .6 2 .4.3.1

For CMSA sprinklers, the design area shall be a rectangular area having a dimension parallel to the branchlines at least 1.2 times the square root of the area protected by the number of sprinklers to be included inthe design area. The design area protected by the number of sprinklers to be used by the 1.2 rule shall bebased on the maximum allowable area per sprinkler.

19 27 .6 2 .4.3.2

Any fractional sprinkler shall be carried to the next higher whole sprinkler.

19 27 .6 2 .4.3.3

In systems having branch lines with an insufficient number of sprinklers to fulfill the 1.2 requirement, thedesign area shall be extended to include sprinklers on adjacent branch lines supplied by the same crossmain.

19 27 .6 2 .4.4 ESFR Sprinkler Method.

For ESFR sprinklers, the design area shall consist of the most hydraulically demanding area of 12sprinklers, consisting of four sprinklers on each of three branch lines, unless other specific numbers ofdesign sprinklers are required in other sections of this standard.

19 27 .6 2 .4.5* Gridded Systems.

19 27 .6 2 .4.5.1

For gridded systems, the designer shall verify that the hydraulically most demanding area is being used.

19 27 .6 2 .4.5.2

A minimum of two additional sets of calculations shall be submitted to demonstrate peaking of demand areafriction loss when compared to areas immediately adjacent on either side along the same branch lines,unless the requirements of 19.6.4.5.3 are met.

19 27 .6 2 .4.5.3

Computer programs that show the peaking of the demand area friction loss shall be acceptable based on asingle set of calculations.

19 27 .6 2 .4.6 Design Densities.

19 27 .6 2 .4.6.1*

System piping shall be hydraulically designed using design densities and areas of operation in accordancewith 19.3.3.2 or Chapter 12 (Note: need correct references) as required for the occupancies or hazardsinvolved.

19 27 .6 2 .4.6.2*

The density shall be calculated on the basis of floor area of sprinkler operation. Where sprinklers areinstalled under a sloped ceiling, the area used for this calculation shall be the horizontal plane below thesprinklers.

19 27 .6 2 .4.6.3

The area covered by any sprinkler used in hydraulic design and calculations shall be the horizontaldistances measured between the sprinklers on the branch line and between the branch lines in accordancewith 9.5.2 (Note: need correct section reference) .

19 27 .6 2 .4.6.4

Where sprinklers are installed above and below a ceiling or in a case where more than two areas aresupplied from a common set of branch lines, the branch lines and supplies shall be calculated to supply thelargest water demand.


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19 27 .6 2 .4.6.5*

For sloped ceiling applications, the area of sprinkler application for density calculations shall be based uponthe projected horizontal area.

19 27 .6 2 .4.7* Design Area Sprinklers.

19 27 .6 2 .4.7.1

Each sprinkler in the design area and the remainder of the hydraulically designed system shall discharge ata flow rate at least equal to the stipulated minimum water application rate (density) multiplied by the area ofsprinkler operation.

19 27 .6 2 .4.7.1.1

Where sprinklers are required to discharge a specific flow or pressure rather than a density, each sprinklerin the design area shall discharge at a flow or pressure at least equal to the minimum required.

19 27 .6 2 .4.7.2*

Where the design area is equal to or greater than the area in Table 19 27 .6 2 .4.7.2 for the hazard being

protected by the sprinkler system, the discharge for sprinklers protecting small compartments 55 ft2

(5.1 m2) or less, such as closets, washrooms, and similar compartments that are in the design area, shallbe permitted to be omitted from the hydraulic calculations.

Table 19 Table 27 .6 2 .4.7.2 Minimum Design Area

Occupancy HazardClassification

Minimum Design Area to Omit Discharge from Sprinklers in Small

Compartments in Design Area [ft2 (m2)])

Light hazard–wet pipesystem 1500 (139)

Light hazard–dry pipesystem 1950 (181)

Ordinary hazard–wet pipesystem 1500 (139)

Ordinary hazard–dry pipesystem 1950 (181)

Extra hazard–wet pipesystem 2500 (232)

Extra hazard–dry pipesystem 3250 (300)

19 27 .6 2 .4.7.2.1

The sprinklers in these small compartments shall be capable of discharging the minimum densityappropriate for the hazard they protect in accordance with Figure 19.3.3.1.1.

19 27 .6 2 .4.7.2.2

The requirements of 19 27 . 6 2 .4.7.2 shall only apply where the area of application is equal to or greaterthan the area shown in Table 19 27 .6 2 .4.7.2 for the appropriate hazard classification (including a30 percent increase for dry pipe systems).

19 27 .6 2 .4.7.3

The requirements of 19 27 . 6 2 .4.7.1.1 to include every sprinkler in the design area shall not apply wheresprinklers are provided above and below obstructions such as wide ducts or tables.

19 27 .6 2 .4.7.3.1

Sprinklers under the obstruction shall not be required to be included in the hydraulic calculation of theceiling sprinklers.

19 27 .6 2 .4.7.3.2

Where the piping to sprinklers under obstructions follows the same sizing pattern as the branch lines, noadditional hydraulic calculations shall be required for sprinklers under obstructions.


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19 27 .6 2 .4.7.4

Water demand of sprinklers installed in concealed spaces shall not be required to be added to the ceilingdemand.

19 27 .6 2 .4.7.5

Calculations shall begin at the hydraulically most remote sprinkler.

19 27 .6 2 .4.7.6

The calculated pressure at each sprinkler shall be used to determine the discharge flow rate for thatparticular sprinkler.

19 27 .6 2 .4.7.7

Where sprinklers are installed under a sloped ceiling, the area shall be calculated on a horizontal planebelow the sprinklers.

19 27 .6 2 .4.8 Friction Loss.


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19 27 .6 2 .4.8.1

Pipe friction loss shall be calculated in accordance with the Hazen–Williams formula with C values fromTable 19 27 .6 2 .4.8.1, as follows:

(1) Pipe, fittings, and devices such as valves, meters, flow switches in pipes 2 in. (50 mm) or less in size,and strainers shall be included, and elevation changes that affect the sprinkler discharge shall becalculated.

(2) Tie-in drain piping shall not be included in the hydraulic calculations.

(3) The loss for a tee or a cross shall be calculated where flow direction change occurs based on theequivalent pipe length of the piping segment in which the fitting is included.

(4) The tee at the top of a riser nipple shall be included in the branch line, the tee at the base of a risernipple shall be included in the riser nipple, and the tee or cross at a cross main–feed main junctionshall be included in the cross main.

(5) Fitting loss for straight-through flow in a tee or cross shall not be included.

(6) The loss of reducing elbows based on the equivalent feet value of the smallest outlet shall becalculated.

(7) The equivalent feet value for the standard elbow on any abrupt 90-degree turn, such as the screw-typepattern shall be used.

(8) The equivalent feet value for the long-turn elbow on any sweeping 90-degree turn, such as a flanged,welded, or mechanical joint-elbow typeshall be used. (See Table 19 27 .6 2 .3.1.1.)

(9) Friction loss shall be excluded for the fitting directly connected to a sprinkler.

(10) Losses through a pressure-reducing valve shall be included based on the normal inlet pressurecondition. Pressure loss data from the manufacturer's literature shall be used.

Table 19 Table 27 .6 2 .4.8.1 Hazen–Williams C Values

Pipe or Tube C Value*

Unlined cast or ductile iron 100

Black steel (dry systems including preaction) 100

Black steel (wet systems including deluge) 120

Galvanized steel (dry systems including preaction) 100

Galvanized steel (wet systems including deluge) 120

Plastic (listed) all 150

Cement-lined cast- or ductile iron 140

Copper tube, brass or stainless steel 150

Asbestos cement 140

Concrete 140

*The authority having jurisdiction is permitted to allow other C values.

19 27 .6 2 .4.8.2*

For antifreeze systems greater than 40 gal (150 L) in size, the pipe friction loss shall be calculated using theDarcy-Weisbach equation shown in 19.6.2.1.3 using a Moody diagram and ℇ ? -factors that arerepresentative of aged pipe otherwise following the methodology presented in 19 27 . 6 2 .4.8.1.

19 27 .6 2 .4.9* Orifice Plates.

19 27 .6 2 .4.9.1

Orifice plates shall not be used for balancing the system.

19 27 .6 2 .4.9.2

Unless the requirements of 19 27 . 6 2 .4.9.3 or 19 27 . 6 2 .4.9.4 are met, mixing of sprinklers of differentK-factors by reducing the K-factor of adjacent sprinklers on the same branch line leading back to the mainfor the purpose of minimizing sprinkler over discharge shall not be permitted.


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19 27 .6 2 .4.9.3

Sprinklers with different K-factors shall be acceptable for special use such as exposure protection, smallrooms or enclosures, or directional discharge. (See 3.3.196 for definition of small rooms.)

19 27 .6 2 .4.9.4

Extended-coverage and residential sprinklers with a different K-factor shall be acceptable for part of theprotection area where installed in accordance with their listing.

19 27 .6 2 .4.10* Pressures.

19 27 .6 2 .4.10.1

When calculating flow from an orifice, the total pressure (Pt) shall be used, unless the calculation method of

19 27 . 6 2 .4.10.2 is utilized.

19 27 .6 2 .4.10.2

Use of the normal pressure (Pn) calculated by subtracting the velocity pressure from the total pressure shall

be permitted. Where the normal pressure is used, it shall be used on all branch lines and cross mainswhere applicable.

19 27 .6 2 .4.10.3

Flow from a sprinkler shall be calculated using the nominal K-factor except that the manufacturer's adjustedK-factors shall be utilized for dry-type sprinklers.

19 27 .6 2 .4.11 Minimum Operating Pressure.

19 27 .6 2 .4.11.1

Minimum operating pressure of any sprinkler shall be 7 psi (0.5 bar).

19 27 .6 2 .4.11.2

Where a higher minimum operating pressure for the desired application is specified in the listing of thesprinkler, this higher pressure shall be required.

19 27 .6 2 .4.12 Maximum Operating Pressure.

For extra hazard occupancies, palletized, solid-piled, bin box, back-to-back shelf storage, shelf storage, orrack storage, the maximum operating pressure of any sprinkler shall be 175 psi (12 bar).

19 27 .6 2 .5 In-Rack Sprinklers.

19 27 .6 2 .5.1

Pipes to in-rack sprinklers shall be sized by hydraulic calculations.

19 27 .6 2 .5.2

Water demand of sprinklers installed in racks or water curtains shall be added to the ceiling sprinkler waterdemand at the point of connection. Demands shall be balanced to the higher pressure. (See Chapter 8.)

19 27 . 7 3 Hose Allowance.

Water allowance for outside hose shall be added to the sprinkler and inside hose requirement at theconnection to the city water main or a yard hydrant, whichever is closer to the system riser.

19 27 . 8 4 Hydraulic Calculation Forms.

19 27 .8 4 .1 General.

Hydraulic calculations shall be prepared on form sheets that include a summary sheet, detailed worksheets,and a graph sheet. [See Figure A.19 27 .8 4 .2(a), Figure A.19 27 .8 4 .3, and Figure A.19 27 .8 4 .4 forcopies of typical forms.]


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19 27 .8 4 .2* Summary Sheet.

The summary sheet shall contain the following information, where applicable:

(1) Date

(2) Location

(3) Name of owner and occupant

(4) Building number or other identification

(5) Description of hazard (for storage applications, the commodity classification, storage height, and rackconfiguration shall be included)

(6) Name and address of contractor or designer

(7) Name of approving agency

(8) System design requirements, as follows:

(9) Design area of water application, ft 2 (m 2 ).

(10) Minimum rate of water application (density), gpm/ft 2 (mm/min). Where sprinklers are listed withminimum water application in gpm (L/min) or pressure in psi (bar), the minimum rate of waterapplication shall be indicated in gpm (L/min) or pressure, psi (bar).

(11) Area per sprinkler, ft 2 (m 2 ).

(12) Total water requirements as calculated, including allowance for inside hose, outside hydrants, andwater curtain and exposure sprinklers

(13) Allowance for in-rack sprinklers, gpm (L/min)

(14) Limitations (dimension, flow, and pressure) on extended coverage or other listed special sprinklers

19 27 .8 4 .3* Detailed Worksheets.

Detailed worksheets or computer printout sheets shall contain the following information:

(1) Sheet number

(2) Sprinkler description and discharge constant (K)

(3) Hydraulic reference points

(4) Flow in gpm (L/min)

(5) Pipe size

(6) Pipe lengths, center-to-center of fittings

(7) Equivalent pipe lengths for fittings and devices

(8) Friction loss in psi/ft (bar/m) of pipe

(9) Total friction loss between reference points

(10) In-rack sprinkler demand balanced to ceiling demand

(11) Elevation head in psi (bar) between reference points

(12) Required pressure in psi (bar) at each reference point

(13) Velocity pressure and normal pressure if included in calculations

(14) Notes to indicate starting points or reference to other sheets or to clarify data shown

(15)

(16) Combined K-factor calculations for sprinklers on drops, armovers, or sprigs where calculations do notbegin at the sprinkler

* Diagram to accompany gridded system calculations to indicate flow quantities and directions for lineswith sprinklers operating in the remote area


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19 27 .8 4 .4* Graph Sheet.

A graphic representation of the complete hydraulic calculation shall be plotted on semiexponential graph

paper (Q1.85) and shall include the following:

(1) Water supply curve

(2) Sprinkler system demand

(3) Hose allowance (where applicable)

(4) In-rack sprinkler demand (where applicable)

19 27 .8 4 .5 Hydraulic Reports.

19 27 .8 4 .5.1* General.

19 27 .8 4 .5.1.1

Hydraulic calculations shall be prepared on form sheets that include a summary sheet, a graph sheet, awater supply analysis, a node analysis, and detailed worksheets.


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19 27 .8 4 .5.1.2


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The data shall be presented in the order shown in Figure 19 27 .8 4 .5.1.2(a) through Figure19 27 .8 4 .5.1.2(d).

Figure 19 Figure 27 .8 4 .5.1.2(a) Summary Sheet.

Figure 19 Figure 27 .8 4 .5.1.2(b) Graph Sheet.

Figure 19 Figure 27 .8 4 .5.1.2(c) Supply and Node Analysis Sheet.


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Figure 19 Figure 27 .8 4 .5.1.2(d) Detailed Worksheet.


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19 27 .8 4 .5.2 Summary Sheet.

The summary sheet as shown in Figure 19.8.5.1.2(a) shall contain the following information, whereapplicable:

(1) Project name and date

(2) Location (including street address)

(3) Owner or expected occupant of space being designed

(4) Name, address, and phone number of installing contractor

(5) Name and phone number of designer

(6) Authority having jurisdiction

(7) Standard or document system is being designed to, including the edition of the document

(8) Design area number and location

(9) Drawing or sheet number where design area is located

(10) Occupancy or commodity classification and information

(11) For storage applications (including miscellaneous), additional information including storage height,ceiling height, storage configuration, aisle width, orientation of upright or pendent, sprinkler K-factorand sprinkler temperature, and the table and or curve utilized in the design

(12) System type, including the system volume with type of protection system indicated in the notes

(13) Sprinkler type, including coverage and response type

(14) Slope of roof or ceiling within the design area

(15) System design requirements, as follows:

(16) Design area of application, ft 2 (m 2 )

(17) Minimum rate of water application (density), gpm/ft 2 (mm/min)

(18) Area per sprinkler, ft 2 (m 2 )

(19) Number of sprinklers calculated

(20) Total water requirements as calculated, including allowance for inside hose, outside hydrants, watercurtain, and exposure sprinklers, and allowance for in-rack sprinklers, gpm (L/min)

(21) Ceiling height if used for quick response sprinkler reduction

(22) Elevation of highest calculated sprinkler

(23) Water supply information, including the following:

(24) Date and time of test

(25) Location of the test and flow hydrant(s)

(26) Source of the water for the flow test

(27) Elevation of the test hydrant relative to the finished floor

(28) Size of fire pump, gpm @ psi

(29) Size of on-site water tank

(30) Notes that include peaking information for calculations performed by a computer program, type ofpreaction system, limitations (dimension, flow, and pressure) on extended-coverage or other listedspecial sprinklers, system type, including the system volume


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19 27 .8 4 .5.3 Graph Sheet.

A graphic representation of the complete hydraulic calculation shall be plotted on semiexponential graph

paper (Q1.85) as shown in Figure 19 27 .8 4 .5.1.2(b) and shall include the following:

(1) Water supply curve

(2) Sprinkler system demand

(3) Hose demand (where applicable)

(4) In-rack sprinkler demand (where applicable)

(5) Additional pressures supplied by a fire pump or other source (when applicable)

19 27 .8 4 .5.4 Supply Analysis.

Information summarized from the graph sheet as shown in Figure 19 27 .8 4 .5.1.2(c) shall include thefollowing:

(1) Node tag at the source

(2) Static pressure [psi (bar)] available at the source

(3) Residual pressure [psi (bar)] available at the source

(4) Total flow [gpm (L/min)] available at the source

(5) Available pressure [psi (bar)] at the source when the total calculated demand is flowing

(6) Total calculated demand [gpm (L/min)] at the source

(7) Required pressure [psi (bar)] when flowing total calculated demand

19 27 .8 4 .5.5 Node Analysis.

Organized information as shown in Figure 19 27 .8 4 .5.1.2(c) regarding the node tags given to eachhydraulic reference point on the system as indicated on the shop drawings shall include the followinginformation:

(1) Node tag for each specific point on the system used in the hydraulic calculations

(2) Elevation in ft (m) of each node tag

(3) K-factor of flowing nodes (such as sprinklers)

(4) Hose allowance in gpm (L/min) requirements for the node tag

(5) Pressure in psi (bar) at the node

(6) Discharge in gpm (L/min) calculated at the node

(7) Notes that indicate any special requirements for the node


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19 27 .8 4 .5.6 Detailed Worksheets.

Detailed worksheets as shown in Figure 19 27 .8 4 .5.1.2(d) or computer printout sheets shall contain thefollowing information:

(1) Sheet number

(2) Hydraulic reference points used in each step

(3) Elevation in ft (m) at each hydraulic reference point

(4) Sprinkler description and discharge constant (K) for the flowing reference point

(5) Flow in gpm (L/min) for the flowing reference point (when applicable)

(6) Total flow in gpm (L/min) through each step

(7) Nominal pipe size in in. (mm)

(8) Actual internal diameter of pipe in in. (mm)

(9) Quantity and length in ft (m) of each type of fitting and device

(10) Pipe lengths in ft (m), center-to-center of fittings

(11) Equivalent pipe lengths in ft (m) of fittings and devices for the step

(12) Total equivalent length in ft (m) of pipes and fitting for the step

(13) C-factor used in each step

(14) Friction loss in psi/ft (bar/m) of pipe

(15) Sum of the pressures from the previous step (starting pressure at beginning)

(16) Elevation head in psi (bar) between reference points

(17) Total friction loss in psi (bar) between reference points

(18) Required pressure in psi (bar) at each reference point

(19) Notes and other information shall include the following:

(20) Velocity pressure and normal pressure if included in calculations

(21) In-rack sprinkler demand balanced to ceiling demand

(22) Notes to indicate starting points or reference to other sheets or to clarify data shown

(23) Diagram to accompany gridded system calculations to indicate flow quantities and directions forlines with sprinklers operating in the remote area

(24) Combined K-factor calculations for sprinklers on drops, armovers, or sprigs where calculations donot begin at the sprinkler

(25) The pressure [psi/(bar)] loss assigned the backflow device when included on a system

(26) Friction factor and Reynolds number when the Darcy–Weisbach equation is used

19 27 . 9 5 Pipe Schedules.

Pipe schedules shall not be used, except in existing systems and in new systems or extensions to existingsystems described in Chapter 11. Water supplies shall conform to 19.3.2.

19 27 .9 5 .1* General.

19 27 .9 5 .1.1

The pipe schedule sizing provisions shall not apply to hydraulically calculated systems.

19 27 .9 5 .1.2

Sprinkler systems having sprinklers with K-factors other than 5.6 nominal, listed piping material other thanthat covered in Table 7.3.1.1, extra hazard Group 1 and Group 2 systems, and exposure protection systemsshall be hydraulically calculated.


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19 27 .9 5 .1.3

The number of automatic sprinklers on a given pipe size on one floor shall not exceed the number given in19.9.2, 19.9.3, or 19.9.4 for a given occupancy.

19 27 .9 5 .1.4* Size of Risers.

Each system riser shall be sized to supply all sprinklers on the riser on any one floor as determined by thestandard schedules of pipe sizes in 19.9.2, 19.9.3, or 19.9.4.

19 27 .9 5 .1.5 Slatted Floors, Large Floor Openings, Mezzanines, and Large Platforms.

Buildings having slatted floors or large unprotected floor openings without approved stops shall be treatedas one area with reference to pipe sizes, and the feed mains or risers shall be of the size required for thetotal number of sprinklers.

19 27 .9 5 .1.6 Stair Towers.

Stair towers, or other construction with incomplete floors, if piped on independent risers, shall be treated asone area with reference to pipe sizes.

19 27 .9 5 .2 Schedule for Light Hazard Occupancies.

19 27 .9 5 .2.1 Branch Lines.

19 27 .9 5 .2.1.1

Unless permitted by 19 27 . 9 5 .2.1.2 or 19 27 . 9 5 .2.1.3, branch lines shall not exceed eight sprinklers oneither side of a cross main.

19 27 .9 5 .2.1.2

Where more than eight sprinklers on a branch line are necessary, lines shall be permitted to be increasedto nine sprinklers by making the two end lengths 1 in. (25 mm) and 11⁄4 in. (32 mm), respectively, and thesizes thereafter standard.

19 27 .9 5 .2.1.3

Ten sprinklers shall be permitted to be placed on a branch line, making the two end lengths 1 in. (25 mm)and 11⁄4 in. (32 mm), respectively, and feeding the tenth sprinkler by a 21⁄2 in. (65 mm) pipe.

19 27 .9 5 .2.2 Pipe Sizes.

19 27 .9 5 .2.2.1

Pipe sizes shall be in accordance with Table 19 27 .9 5 .2.2.1.

Table 19 Table 27 .9 5 .2.2.1 Light Hazard Pipe Schedules

Steel Copper

1 in. (25 mm) 2 sprinklers 1 in.(25 mm) 2 sprinklers

11⁄4 in. (32 mm) 3 sprinklers 11⁄4 in. (32 mm) 3 sprinklers


2 in. (50 mm) 10 sprinklers 2 in. (50 mm) 12 sprinklers




4 in. (100 mm) See Section 8.2 4 in. (100 mm) See Section 8.2

19 27 .9 5 .2.2.2

Each area requiring more sprinklers than the number specified for 31⁄2 in. (90 mm) pipe in Table19 27 .9 5 .2.2.1 and without subdividing partitions (not necessarily fire walls) shall be supplied by mains orrisers sized for ordinary hazard occupancies.


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19 27 .9 5 .2.3

Where sprinklers are installed above and below ceilings in accordance with Figure 19 27 .9 5 .2.3(a)through Figure 19.9.2.3(c), and such sprinklers are supplied from a common set of branch lines or separatebranch lines from a common cross main, such branch lines shall not exceed eight sprinklers above andeight sprinklers below any ceiling on either side of the cross main.

Figure 19 Figure 27 .9 5 .2.3(a) Arrangement of Branch Lines Supplying Sprinklers Above andBelow Ceiling.

Figure 19 Figure 27 .9 5 .2.3(b) Sprinkler on Riser Nipple from Branch Line in Lower Fire Area.

Figure 19 Figure 27 .9 5 .2.3(c) Arrangement of Branch Lines Supplying Sprinklers Above,Between, and Below Ceilings.


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19 27 .9 5 .2.4

Unless the requirements of 19 27 . 9 5 .2.5 are met, pipe sizing up to and including 2 1⁄2 in. (65 mm) shall beas shown in Table 19 27 .9 5 .2.4 utilizing the greatest number of sprinklers to be found on any two adjacentlevels.

Table 19 Table 27 .9 5 .2.4 Number of Sprinklers Above and Below Ceiling

Steel Copper






19 27 .9 5 .2.5

Branch lines and cross mains supplying sprinklers installed entirely above or entirely below ceilings shall besized in accordance with Table 19 27 .9 5 .2.2.1.

19 27 .9 5 .2.6*

Where the total number of sprinklers above and below a ceiling exceeds the number specified in Table19 27 .9 5 .2.4 for 21⁄2 in. (65 mm) pipe, the pipe supplying such sprinklers shall be increased to 3 in.(75 mm) and sized thereafter according to the schedule shown in Table 19 27 .9 5 .2.2.1 for the number ofsprinklers above or below a ceiling, whichever is larger.

19 27 .9 5 .3 Schedule for Ordinary Hazard Occupancies.

19 27 .9 5 .3.1

Unless permitted by 19 27 . 9 5 .3.2 or 19 27 . 9 5 .3.3, branch lines shall not exceed eight sprinklers oneither side of a cross main.

19 27 .9 5 .3.2

Where more than eight sprinklers on a branch line are necessary, lines shall be permitted to be increasedto nine sprinklers by making the two end lengths 1 in. (25 mm) and 11⁄4 in. (32 mm), respectively, and thesizes thereafter standard.

19 27 .9 5 .3.3

Ten sprinklers shall be permitted to be placed on a branch line, making the two end lengths 1 in. (25 mm)and 11⁄4 in. (32 mm), respectively, and feeding the tenth sprinkler by a 21⁄2 in. (65 mm) pipe.

19 27 .9 5 .3.4

Pipe sizes shall be in accordance with Table 19 27 .9 5 .3.4.

Table 19 Table 27 .9 5 .3.4 Ordinary Hazard Pipe Schedule

Steel Copper







31⁄2 in .(90 mm) 65 sprinklers 31⁄2 in. (90 mm) 75 sprinklers




8 in. (200 mm) See Section 8.2 8 in. (200 mm) See Section 8.2


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19 27 .9 5 .3.5

Where the distance between sprinklers on the branch line exceeds 12 ft (3.7 m) or the distance betweenthe branch lines exceeds 12 ft (3.7 m), the number of sprinklers for a given pipe size shall be in accordancewith Table 19 27 .9 5 .3.5.

Table 19 Table 27 .9 5 .3.5 Number of Sprinklers — Greater Than 12 ft (3.7 m) Separations

Steel Copper




Note: For other pipe and tube sizes, see Table 22.5.3.4 (Note: need correct reference) .

19 27 .9 5 .3.6

Where sprinklers are installed above and below ceilings and such sprinklers are supplied from a commonset of branch lines or separate branch lines supplied by a common cross main, such branch lines shall notexceed eight sprinklers above and eight sprinklers below any ceiling on either side of the cross main.

19 27 .9 5 .3.7

Pipe sizing up to and including 3 in. (76 mm) shall be as shown in Table 19.9.3.7 in accordance with Figure19 27 .9 5 .2.3(a), Figure 19.9.2.3(b), and Figure 19.9.2.3(c) utilizing the greatest number of sprinklers to befound on any two adjacent levels.

Table 19 Table 27 .9 5 .3.7 Number of Sprinklers Above and Below a Ceiling

Steel Copper







19 27 .9 5 .3.8

Branch lines and cross mains supplying sprinklers installed entirely above or entirely below ceilings shall besized in accordance with Table 19.9.3.4 or Table 19.9.3.5.

19 27 .9 5 .3.9*

Where the total number of sprinklers above and below a ceiling exceeds the number specified in Table19.9.3.7 for 3 in. (80 mm) pipe, the pipe supplying such sprinklers shall be increased to 31⁄2 in. (90 mm) orlarger and sized thereafter according to the schedule shown in Table 19.9.2.2.1 or Table 19.9.3.4 for thenumber of sprinklers above or below a ceiling, whichever is larger.

19 27 .9 5 .3.10

Where the distance between the sprinklers protecting the occupied area exceeds 12 ft (3.7 m) or thedistance between the branch lines exceeds 12 ft (3.7 m), the branch lines shall be sized in accordance witheither Table 19.9.3.5, taking into consideration the sprinklers protecting the occupied area only, or Table19.9.3.7, whichever requires the greater size of pipe.

19 27 .9 5 .4* Extra Hazard Occupancies.

Extra hazard occupancies shall be hydraulically calculated.


The hydraulic calculations should not be separated from the working plan requirements and should not be before the design approaches for storage. In the flow of the proposed new standard, the design approaches for storage are separated from the design approaches for light, ordinary and extra hazard occupancies by the calculation rules. That just does not flow correctly. It forces the user to circle backwards through the standard for storage protection.


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Public Comment No. 67-NFPA 13-2017 [Section No. 4.6]

Related Item

FR-914 Rewrite of Chapter 19




Street Address:

City:

State:

Zip:

Submittal Date: Fri May 05 15:44:26 EDT 2017

Committee Statement

CommitteeAction:

Accepted


Statement: The hydraulic calculations should not be separated from the working plan requirements and shouldnot be before the design approaches for storage. In the flow of the proposed new standard, thedesign approaches for storage are separated from the design approaches for light, ordinary andextra hazard occupancies by the calculation rules. That just does not flow correctly. It forces theuser to circle backwards through the standard for storage protection.


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x.1 Hydraulically calculated fire sprinkler systems shall be designed to ensure the requiredsystem pressure is a minimum of ten percent but not less than ten (10) psi below the availablesupply pressure.

x.2 The maximum velocity for use in hydraulic calculations shall be 32 ft/sec (9.8 m/sec).


Most water supplies fluctuate through the day, week, month and year, with the range in pressure movement exceeding several psi. In developing communities the water supply changes greatly over time. The use of a safety factor will aid to overcome these deficiencies.

The second part is: The purpose of this amendment is to limit the velocity in calculations. Other NFPA Codes/Standards have maximum velocity limits. For example in fire fighting piping is 20 ft/sec as NFPA 20 and 35 ft/sec in inspection, test and stationary pumps as NFPA 1963.

Related Item

PI 577

PI 576




Affilliation: Self

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: Having velocity limits on fire pumps is not a reason for imposing velocity limits on sprinklercalculations. While attention needs to be paid to fluctuations in the water supply setting a PSIlimitation is inappropriate based on varying water supplies.


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20.1.1

Miscellaneous and low-piled storage, meeting the criteria of Chapter 4, shall be protected in accordancewith the relative occupancy hazard criteria reference in that section. Table 20.1.1

Insert A new Table, an udated version of Table 13.2.1 from the 2016 edition of NFPA 13:

Table 20.1.1 Discharge Criteria for Miscellaneous and Low-Piled Storage


In the First Draft Report, Table 13.2.1 has been deleted and replaced with text in Chapter 4 and a reference the current 20.1.1 reference in Chapter 20 back to Chapter 4. However to deternine the required design criteria, the user must then go to Chapter 19 for the associated OH or EH curve in Figure 19.3.3.1.1. This makes the determination of the required protection awkward and hard to discern and is not at all necessary.

The new Table 20.1.1 needs to be updated, from the previous Table 13.2.1, since minimum durations have been revised in the First Draft Report. (ie. OH2 designs can now be reduced to a 60 minute duration, in lieu of the 90 from Table 13.2.1. Similarly, EH1 designs can now be reduced from 120 minutes to 90.

Additionally, at the 1st Draft Meeting the TC voted in favour of PI-513 to allow Class IV on Racks to 12 ft. to be protected as OH2 with 1 level of in-rack sprinklers, but this item has not been addressed in the rewrite. In light of this, a new Table 20.1.1 should be inserted, to provide the needed clarity and to offer all acceptable options.

Related Item

Pi-513

FR-911




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: Former Table 13.2.1 has been added back into the 2019 edition as Table 4.3.1.7.1 in order to makeit easier for the end user to find ceiling only criteria for miscellaneous and low-piled storageapplications. For in-rack information the user must go to Chapter 25.


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Sections] ]

Commodity classification and the corresponding protection requirements shall be determined based on themakeup of individual storage units (ie. , unit load, pallet load, or module held together in some manner andnormally transported by material-handling equipment ) .


The intent of this Comment is to return the text to that from the 2016 edition of NFPA 13. In the First Draft Report, Section 20.3.1 it states that a commodity must be held together and normally transported by material handling equipment. This is very limiting and does not match the reality of many typical storage configurations. Shelf storage, solid piles, loose cartons/containers placed on racks and bin box storage do not fit that profile, so the new text should not be accepted.

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Statement: The intent of this Comment is to return the text to that from the 2016 edition of NFPA 13. In the FirstDraft Report, Section 20.3.1 it states that a commodity must be held together and normallytransported by material handling equipment. This is very limiting and does not match the reality ofmany typical storage configurations. Shelf storage, solid piles, loose cartons/containers placed onracks and bin box storage do not fit that profile, so the new text should not be accepted.


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20.3.2.5 Slave Pallet.

Where solid, flat-bottom, combustible pallets are used for rack storage of Class I through IV commodity upto 25 ft in height in combination with CMDA sprinklers, Section 20.xxxx 21.4.1.4.7 shall apply. (See FigureA.3.9.1.10.). For other situations where solid, flat-bottom, combustible pallets are used, judgment shall beused to decide whether the fire protection needs to be increased.


The reference in Chapter 20 did not seem correct. I believe that the intent was to reference the one section where we tell the user what to do with slave pallets, which ended up in Chapter 21. However, this section in Chapter 21 only applies to rack storage up to 25 ft in height of Class I - IV commodities. For other commodities, we have never required an increase in ceiling sprinkler design (probably because there were in-rack sprinklers involved). During the rewrite, there was a decision to insert a warning in the "General" chapter, but we should not make new requirements for all storage when we do that.

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Resolution: SR-311-NFPA 13-2017 There wasn't sufficient technical substantiation for changing the existingrequirement.

Statement: The reference in Chapter 20 did not seem correct. I believe that the intent was to reference the onesection where we tell the user what to do with slave pallets, which ended up in Chapter 21. However,this section in Chapter 21 only applies to rack storage up to 25 ft in height of Class I - IVcommodities. For other commodities, we have never required an increase in ceiling sprinkler design(probably because there were in-rack sprinklers involved). During the rewrite, there was a decisionto insert a warning in the "General" chapter, but we should not make new requirements for allstorage when we do that.


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20.3.5 Encapsulation. Whether or not a commodity is encapsulated shall not be used in thedetermination of the commodity classification. If an increase in fire protection is necessary due to theencapsulation, the requirements of Chapters 20 through 24 will include such additional protection.


The rewrite had a section number and title here with no text, which violates the style manual. I attempted to put in language that fits with the theme of this section. Alternatively, the committee could just eliminate the section number and title.

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Resolution: The Technical Committee agreed with the submitter's alternate approach to delete thesection.


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Sections] ]

On floor storage of commodities on pallets or other storage aids that form horizontal spaces between tiersof storage shall be considered as palletized storage.


Duplicate from chapter 3.3.149 belong in Chapter 3

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First Draft Report


Submitter Full Name: William Smith

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Statement: Duplicate From Chapter 3.3.8.1. Belongs in Chapter 3


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20.5.2.1 Closed Array.

Where the vertical flues between pallet loads are 6 in. (152 mm) or less, the arrangement shall beconsidered closed array.


Duplicate From Chapter 3.3.8.1. Belongs in Chapter 3

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20.5.2.2 Open Array.

Where the vertical flues between pallet loads are greater than 6 in. (152 mm), the arrangement shall beconsidered open array.


Duplicate from chapter 3.3.8.3. Belongs in Chapter 3

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20.5.2.3 Pile Stability, Stable Piles.

Those arrays where collapse, spillage of contents, or leaning of stacks across flue spaces is not likely tooccur soon after initial fire development shall be considered as stable piles.


Duplicate from Chapter 3.3.153. Belongs in Chapter 3.

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20.5.2.4 * Pile Stability, Unstable Piles.

Those arrays where collapse, spillage of contents, or leaning of stacks across flue spaces occurs soonafter initial fire development shall be considered as unstable piles.


Duplicate From Chapter 3.3.154. Belongs in Chapter 3

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20.5.3 Solid-Piled Storage.

Storage of commodities stacked on each other shall be considered as solid piled storage.


Where solid piled storage has vertical flues between the piles of 6 in. (152 mm) or less, the storagearrangement shall be considered as closed array.

20.5.3.2 Open Array.

Where solid piled storage has vertical flues between the piles that are greater than 6 in. (152 mm), thestorage arrangement shall be considered as open array.

20.5.3.3 Pile Stability, Stable Piles.

Those arrays where collapse, spillage of content, or leaning of stacks across flue spaces is not likely tooccur soon after initial fire development shall be considered as stable piles.

20.5.3.4 * Pile Stability, Unstable Piles.

Those arrays where collapse, spillage of contents, or leaning of stacks across flue spaces occurs soonafter initial fire development shall be considered as unstable piles.


All of these definitions are found in Chapter 3 and are duplicates. They belong in Chapter 3.

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Statement: All of these definitions are found in Chapter 3 and are duplicates. They belong in Chapter 3.


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Storage of commodities stacked on each other shall be considered as solid piled storage.


Duplicate from Chapter 3.3.199. Belongs in Chapter 3

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Statement: All of these definitions are found in Chapter 3 and are duplicates. They belong in Chapter 3.


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20.5.4 Bin Box Storage.

Storage in five-sided wood, metal, or cardboard boxes with open face on the aisles in which boxes are self-supporting or supported by a structure so designed that little or no horizontal or vertical space existsaround boxes shall be considered as bin box storage.



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Statement: Duplicate From Chapter 3.3.18. Belongs in Chapter 3


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20.5.5 Shelf Storage.

Storage on structures up to and including 30 in. (0.76 m) deep and separated by aisles at least 30 in. (0.76m) wide shall be considered as shelf storage.



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20.5.6 Back-to-Back Shelf Storage.

Two solid or perforated shelves up to 30 in. (0.76 m) in depth each, not exceeding a total depth of 60 in.(1.52 m), separated by a longitudinal vertical barrier such as plywood, particleboard, sheet metal, orequivalent, with a maximum 0.25 in. (6.4 mm) diameter penetrations and no longitudinal flue space and amaximum storage height of 15 ft (4.57 m) shall be considered as back-to-back storage.



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Sections] ]

Racks on fixed rails or guides that can be moved back and forth only in a horizontal, two-dimensional planeshall be protected as movable racks.


Duplicate From Chapter 3.3.126. Belongs in Chapter 3.

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Statement: Duplicate From Chapter 3.3.126. Belongs in Chapter 3.


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20.5.8.1 Open Rack.

Racks without shelving or with shelving in racks that are fixed in place with shelves having a solid surface

and a shelf area equal to or less than 20 ft 2 (1.9 m 2 ) or with shelves having a wire mesh, slatted surface,or other material with openings representing at least 50 percent of the shelf area, including the horizontalarea of rack members and where the flue spaces are maintained, shall be protected as open rack.



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20.5.8.2 Shelving.

20.5.8.2.1 Rack Shelf Area.

The area of the horizontal surface of a shelf in a rack defined by perimeter aisle(s) or nominal 6 in. (152mm) flue spaces on all four sides, or by the placement of loads that block openings that would otherwiseserve as the required flue spaces, shall be considered to determine the rack shelf area.

20.5.8.2.2 Slatted Shelf Rack.

A rack where shelves are fixed in place with a series of narrow individual solid supports used as the shelfmaterial and spaced apart with regular openings shall be protected as a slatted shelf rack.

20.5.8.2.3 Solid Shelf Rack.

A rack that is not defined as an open rack where shelves are fixed in place with a solid, slatted, or wiremesh barrier used as the shelf material and having limited openings in the shelf area shall be protected asa solid shelf rack.

20.5.8.2.4 Solid

Shelving

.

The area of a shelf shall be measured by perimeter aisle or flue space on all four sides or by theplacement of loads that block openings that would otherwise serve as the required flue spaces.

20.5.8.2.4.1

Shelving material that is less than 50 percent open, or placement of loads that block openings that would

otherwise serve as the required flue spaces, greater than 20 ft2 (1.9 m2) in area shall be treated as solidshelf racks.

20.5.8.2. 4. 2

Where multiple-row racks of any height have no longitudinal flue or where double-row racks with storage up25 ft (7.6 m) in height have no longitudinal flue, the situation shall not be considered solid shelves wheretransverse flues exist at maximum 5 ft (1.5 m) intervals, and additional in-rack sprinklers shall not berequired in accordance with 16 with 25 .1. 6.3. 1 and 16 25 .1. 6.3. 2.


Duplicate information in Chapter 3. Belongs in Chapter 3. Revisions to references to the correct locations.

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CommitteeAction:

Accepted


Statement: Duplicate information in Chapter 3. Belongs in Chapter 3. Revisions to references to thecorrect locations.


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20.5.8.3.2 Aisle Width.

The horizontal dimension between the face of the loads in racks under consideration shall determine theaisle width for protection criteria.



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The space between rows of storage perpendicular to the direction of loading with a width not exceeding 24in. (610 mm) between storage shall be considered as the longitudinal flue.



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Sections] ]

The space between rows of storage parallel to the direction of loading shall be considered as thetransverse flue. (See Figure A.3.9.3.6.)



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20.5.8.5 Bulkhead.

A vertical barrier across the rack shall be considered a bulkhead.



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Statement: Duplicate from Chapter 3.3.20. Belongs in Chapter 3


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20.5.8.6 Horizontal Barrier.

A solid barrier in the horizontal position covering the entire rack, including all flue spaces at certain heightincrements, to prevent vertical fire spread shall be considered a horizontal barrier.



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20.5.8.7 Single-Row Racks.

Racks that have no longitudinal flue space and that have a depth up to 6 ft (1.8 m) with aisles having awidth of at least 3.5 ft (1.1 m) between loads on racks shall be protected as single-row racks.



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20.5.8.8 Double-Row Racks.

Racks less than or equal to 12 ft (3.7 m) in depth or single-row racks placed back to back having anaggregate depth up to 12 ft (3.7 m), with aisles having an aisle width of at least 3.5 ft (1.1 m) betweenloads on racks shall be protected as double-row racks.



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20.5.8.9 Multiple-Row Racks.

Racks greater than 12 ft (3.7 m) in depth or single- or double-row racks separated by aisles less than 3.5 ft(1.1 m) wide having an overall width greater than 12 ft (3.7 m) shall be protected as multiple-row racks.



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20.5.8.10 Movable Racks.

Racks on fixed rails or guides that can be moved back and forth only in a horizontal, two-dimensional planeshall be protected as movable racks.



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20.5.8.11 Portable Racks.

Racks that are not fixed in place and can be arranged in any number of configurations shall be protectedas portable racks.



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20.5.9 Rubber Tires.

Paragraphs

20.5.9.1

through 20.5.9.7 cover the general terms of rubber tire storage that identify which type of protectioncriteria shall be used in Chapters 21 to 24.

20.5.9.1 Banded Tires.

When tires are strapped together, they shall be considered as banded.

20.5.9.2 Horizontal Channel.

Any uninterrupted space in excess of 5 ft (1.5 m) in length between horizontal layers of stored tires shall beconsidered as the horizontal channel.

20.5.9.3 Laced Tire Storage.

Tires stored where the sides of the tires overlap, creating a woven or laced appearance, shall beconsidered as laced tire storage. [See Figure A.3.9.4.9(g).]

20.5.9.4 On-Side Tire Storage.

Tires stored horizontally or flat shall be considered as on-side storage.

20.5.9.5 On-Tread Tire Storage.

Tires stored vertically or on their treads shall be considered as on-tread storage.

20.5.9.6 Palletized Tire Storage.

Storage on portable racks of various types utilizing a conventional pallet as a base shall be considered aspalletized storage.

20.5.9.7 Pyramid Tire Storage.

On-floor storage in which tires are formed into a pyramid to provide pile stability shall be considered aspyramid storage.

20.5.9.8 Water Supplies.

Total water supplies shall be capable of providing flow for automatic sprinklers, hose streams, and foamsystems (if provided) for the duration required in Table 20.12.2.6.


Duplicate definitions from Chapter 3. Belongs in Chapter 3

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Committee Statement



Statement: Duplicate definitions from Chapter 3. Belongs in Chapter 3


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20.5.10 Roll Paper.

Paragraphs

20.5.

9.1 through 20.5.9.11 cover the general terms of roll paper that identify which type of protection criteria shallbe used in Chapters 21 through 24.

20.5. 10.1 Paper.

Storage of all kinds of felted sheets made from natural fibrous materials, usually vegetable but sometimesmineral or animal, and formed on a fine wire screen from water suspension, where stored in rolled formshall be protected as roll paper storage.

20.5.10.2 Closed Array (Paper).

Where a vertical storage arrangement in which the distances between columns in both directions are short[not more than 2 in. (50 mm) in one direction and 1 in. (25 mm) in the other], the storage array shall beconsidered as closed array.

20.5.10.3 Open Array (Paper).

Where a vertical storage arrangement in which the distance between columns in both directions is lengthy(all vertical arrays other than closed or standard), the storage array shall be considered as open array.

20.5.10.4 Standard Array (Paper).

Where a vertical storage arrangement in which the distance between columns in one direction is short [1in. (25 mm) or less] and is in excess of 2 in. (50 mm) in the other direction, the storage array shall beconsidered as standard array.

20.5.10.5 Banded Roll Paper Storage.

Where rolls are provided with a circumferential steel strap [ 3 ⁄ 8 in. (9.5 mm) or wider] at each end of theroll, the rolls shall be considered banded.

20.5.10.6 Column.

A single vertical stack of rolls shall be considered a column.

20.5.10.7 Core.

The central tube around which paper is wound to form a roll shall be considered as the core.

20.5.10.8 Horizontal Roll Paper Storage.

Rolls stored with the cores in the horizontal plane (on-side storage) shall be considered as horizontalstorage.

20.5.10.9 Vertical Roll Paper Storage.

Rolls stored with the cores in the vertical plane (on-end storage) shall be considered as vertical storage.

20.5.10.10 Wrapped Roll Paper Storage.

Rolls provided with a complete heavy kraft covering around both sides and ends shall be considered aswrapped storage.

20.5.10.11 Roll Paper Storage Height.

The maximum vertical distance above the floor at which roll paper is normally stored shall be consideredas the storage height.

20.5.10.12 Protection Criteria for Roll Paper Storage.

20.5.10. 13 2

Wet pipe systems shall be used in tissue storage areas.


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20.5.10. 13 2 .1

The water supply design shall include the demand of the automatic sprinkler system plus the hose streamallowance plus, where provided, the high-expansion foam system for the duration specified in Table20.12.2.6.

20.5.10. 14 3

Horizontal storage of heavyweight or mediumweight paper shall be protected as a closed array.

20.5.10. 15 4

Mediumweight paper shall be permitted to be protected as heavyweight paper where wrapped completelyon the sides and both ends, or where wrapped on the sides only with steel bands. Wrapping material shallbe either a single layer of heavyweight paper with a basis weight of 40 lb (18.1 kg) or two layers ofheavyweight paper with a basis weight of less than 40 lb (18.1 kg).

20.5.10. 16 5

Lightweight paper or tissue paper shall be permitted to be protected as mediumweight paper wherewrapped completely on the sides and both ends, or where wrapped on the sides only with steel bands.Wrapping material shall be either a single layer of heavyweight paper with a basis weight of 40 lb (18.1 kg)or two layers of heavyweight paper with a basis weight of less than 40 lb (18.1 kg).

20.5.10. 17 6

For purposes of sprinkler system design criteria, lightweight class paper shall be protected as tissue.


Duplicate definitions from Chapter 3. Belongs in Chapter 3

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Statement: Duplicate definitions from Chapter 3. Belongs in Chapter 3


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20.5.11 Plastic Motor Vehicle Components.

Group A plastic automotive components and associated packaging material consisting of exposed,expanded Group A plastic dunnage, instrument panels, and plastic bumper fascia shall be permitted to beprotected as defined in Chapter 23.

20.5.11.1

Automotive components covered in this section shall not include the storage of air bags, tires, and seats onportable racks. Paragraphs 20.5.11.1 through 20.5.11.3 cover the general terms of plastic motor vehiclecomponents that identify which protection criteria shall be used in Chapter 23.

20.5.11.2 Automotive Components on Portable Racks.

Instrument panels, windshields, metal and plastic gasoline tanks, heater housings, door panels, interiortrim, bumper fascia, wiring harnesses, sheet metal, body components, engines, driveline components,steering mechanisms, auxiliary motors, and lighting, all with or without expanded Group A plastic dunnage,shall be permitted to be protected as automotive components in Chapter 23.


Where portable racks have vertical flues between the racks that are 6 in. (152 mm) or less, the storagearrangement shall be considered as closed array.


Duplicate from Chapter 3. Belongs in Chapter 3

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Statement: Duplicate from Chapter 3. Belongs in Chapter 3


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20.5.12 Retail Display/Storage.

Paragraph 20.5.7.1 covers the general terms of retail display/storage that identify which type of protectioncriteria shall be used in Chapters 21 through 24.


This paragraph has no bearing in this location. Paragraph 20.5.7.1 deals with movable rack only, and is currently addressed.

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Accepted


Statement: This paragraph has no bearing in this location. Paragraph 20.5.7.1 deals with movable rackonly, and is currently addressed.


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20.5.13 Baled Cotton Storage.

Paragraph 20.5.13.1 covers the general terms of baled cotton storage that identify which type ofprotection criteria shall be used in Chapter 21.

20.5.13.1 Tiered Storage.

An arrangement in which bales are stored directly on the floor, two or more bales high, shall be consideredas tiered storage.


Paragraph 20.5.13.1 is currently defined in Chapter 3. This definition belongs in Chapter 3. Chapter 21 defines the protection requirements.

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Accepted


Statement: Paragraph 20.5.13.1 is currently defined in Chapter 3. This definition belongs in Chapter 3.Chapter 21 defines the protection requirements.


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20.5.14 Cartoned Record Storage.

Paragraphs

20.5.14.1

and 20.5.14.2 cover the general terms of cartoned record storage that identify which type of rack andshelving criteria shall be used in Chapters 21 through 24.

20.5.14.1 Cartoned Records Storage.

The protection criteria in Chapter 21 for cartoned records storage shall be based on a Class III commodityconsisting predominantly of paper records in cardboard cartons.

20.5.14.2 * Catwalk.

For the purposes of cartoned records storage, catwalks shall be considered a storage aid consisting ofeither open metal grating or solid horizontal barriers supported from a rack storage system that is utilizedas a walkway for access to storage at elevated levels.


The Protection Criteria is provided in Chapter 21 and Definitions are currently located in Chapter 3.

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Statement: The Protection Criteria is provided in Chapter 21 and Definitions are currently located inChapter 3.


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20.6.4.2 3

Protection of Class I-IV commodities with excessive clearance from the top of storage to the ceilingsprinkler deflectors spray sprinklers using CMDA criteria that exceed the maximum allowable clearance inTable 20.6.4.2 shall be in accordance with Table 20.6.4.2 3 .

Table 20.6.4.2 Class 3 Class I Through Class IV Commodities

Storage ConfigurationWhere the

clearance toceiling exceeds

Protection is based upon thestorage height that would

result in a clearance to ceilingof…

In-rack Sprinklers*

Palletized, solid-piled, binbox, shelf, or back-to-backshelf storage

20 ft (6.1 m)20 ft (6.1 m) N/A

Rack storage up to andincluding 25 ft (7.6 m) inheight

20 ft (6.1 m)20 ft (6.1 m) Permitted as alternative

to presumed clearanceof 20 ft (6.1 m)

Rack storage over 25 ft (7.6m) in height



*When applying the supplemental in-rack sprinkler option, the ceiling density is based upon the givenstorage height with an assumed acceptable clearance to ceiling. Provide one level of supplemental, quickresponse in-rack sprinklers located directly below the top tier of storage and at every flue spaceintersection.


This eliminates the use of the word "excessive", which is not enforceable and clarifies that this rule only applies to CMDA approaches. The Tables for CMSA and ESFR sprinklers handle the maximum clearance situation in a much better manner and do not need to be addressed in this general section.





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Committee Statement

CommitteeAction:



Statement: This eliminates the use of the word "excessive", which is not enforceable and clarifies that this ruleonly applies to CMDA approaches. The Tables for CMSA and ESFR sprinklers handle themaximum clearance situation in a much better manner and do not need to be addressed in thisgeneral section.


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20.6.4.3 4

Protection of Plastic and Rubber commodities with excessive clearance from the top of storage to theceiling sprinkler deflectors using spray sprinklers with CMDA criteria having clearance exceeding theallowable limits of Table 20.6.4.2 shall be in accordance with Table 20.6.4.3 4 .

Table 20.6.4.3 Plastics 4 Plastics and Rubber Commodities

Storage ConfigurationWhere the

clearance toceiling exceeds

Protection is based upon thestorage height that would

result in a clearance to ceilingof…

In-rack Sprinklers*

Palletized, solid-piled, binbox, shelf, or back-to-backshelf storage

20 ft (6.1 m)20 ft (6.1 m) N/A

Rack storage up to andincluding 25 ft (7.6 m) inheight



Rack storage over 25 ft (7.6m) in height

10 ft (3.1 m)N/A Required

*If in-rack sprinklers are required for the actual storage height with an acceptable clearance to ceiling, in-rack sprinklers are installed as indicated by that criteria. Provide one level of supplemental, quick responsein-rack sprinklers located directly below the top tier of storage and at every flue space intersection.


This eliminates the use of the word "excessive", which is not enforceable and clarifies that these maximum clearance rules only apply to spray sprinklers using CMDA criteria. The situation with CMSA and ESFR sprinklers is handled much better in the Tables in Chapters 22 and 23 and does not need to be addressed here. Also, this helps to clarify that it is the ceiling clearance being calculated here, not the sprinkler clearance. The difference can be about 22 inches depending on the type of construction of the ceiling, and we have gone to great lengths to tell people how to measure this in previous parts of this section.





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FR 801




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Committee Statement

CommitteeAction:



Statement: This eliminates the use of the word "excessive", which is not enforceable and clarifies that thesemaximum clearance rules only apply to spray sprinklers using CMDA criteria. The situation withCMSA and ESFR sprinklers is handled much better in the Tables in Chapters 22 and 23 and doesnot need to be addressed here. Also, this helps to clarify that it is the ceiling clearance beingcalculated here, not the sprinkler clearance. The difference can be about 22 inches depending onthe type of construction of the ceiling, and we have gone to great lengths to tell people how tomeasure this in previous parts of this section.


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20.6.4.4 2

For spray sprinkler CMDA criteria where the clearance to ceiling exceeds those identified in Table20.6.4.4 2 , the requirements of 20 Table 60 .6.4. 5 through 3 and Table 20.6.4. 10 shall 4 shall apply.

Table 20.6.4.4 Maximum 2 Maximum Clearance from Top of Storage to Ceiling for CMDA ProtectionCriteria

Commodity Class I to IV Group A Plastic

Palletized, Solid-Piled, Bin Box, Shelf, or Back-to-Back Shelf Storage 20 ft (6.1 m) 20 ft (6.1 m)

Rack Storage up to 25 ft (7.6 m) 20 ft (6.1 m) 10 ft (3.1 m)

Rack Storage > 25 ft (7.6 m) 10 ft (3.1 m) 10 ft (3.1 m)


This table should come first. It establishes the maximum clearance for each type of storage protected by spray sprinklers using CMDA criteria.





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Committee Statement

CommitteeAction:



Statement: This table should come first. It establishes the maximum clearance for each type of storageprotected by spray sprinklers using CMDA criteria.


366 of 518 10/27/2017, 7:12 AM

Public Comment No. 182-NFPA 13-2017 [ Sections

20.6.4.5, 20.6.4.6, 20.6.4.7, 20.6.4.8, 20.6.4.9 ]

Sections 20.6.4.5, 20.6.4.6, 20.6.4.7, 20.6.4.8, 20.6.4.9

20.6.4.5

Where the clearance to ceiling exceeds 20 ft (6.1 m) for palletized, solid-piled, bin box, shelf, or back-to-back shelf storage, the protection shall be based on the storage height that would result in a clearance toceiling of 20 ft (6.1 m).

20.6.4.6

Where the clearance to ceiling exceeds 20 ft (6.1 m) for rack storage of Class I through IV storage up toand including 25 ft (7.6 m) in height, the protection shall be based upon the storage height that would resultin a clearance to ceiling of 20 ft (6.1 m) or providing one level of supplemental, quick-response in-racksprinklers in accordance with Chapter 25 .

20.6.4.7

Where the clearance to ceiling exceeds 10 ft (3.0 m) for rack storage of Class I to IV above 25 ft (7.6 m) inheight or Group A plastic up to 25 ft (7.6 m) in height, protection shall be based upon the storage heightthat would result in a clearance to ceiling of 10 ft (3.0 m) or providing one level of supplemental, quick-response in-rack sprinklers in accordance with Chapter 25 .

20.6.4.8

Where the clearance exceeds 10 ft (3.0 m) for rack storage of Group A plastic above 25 ft (7.6 m) inheight,, protection shall be based on providing one level of supplemental, quick-response in-rack sprinklersin accordance with Chapter 25 .

20.6.4.9

When applying the supplemental in-rack sprinkler option, the ceiling density shall be based upon the givenstorage height with an assumed acceptable clearance to ceiling.


All of this material is redundant with the tables earlier in 20.6.4.




Related Item

FR 801




Street Address:

City:

State:

Zip:


Committee Statement


367 of 518 10/27/2017, 7:12 AM



Statement: All of this material is redundant with the tables earlier in 20.6.4.


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20.6.4.10 5

If in-rack sprinklers are required for the actual storage height with an acceptable clearance to ceiling, in-rack sprinklers shall be installed as indicated by that criteria.


This section is important and needs to stay. I intentionally did not include it in the proposal to remove many of the previous sections. While this renumbering would have probably happened without my submitting this comment, I wanted to be clear that I did not intend to omit this section.



Public Comment No. 182-NFPA 13-2017 [Sections20.6.4.5, 20.6.4.6, 20.6.4.7, 20.6.4.8, 20.6.4.9]

Related Item

FR 801




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: This section is important and needs to stay. I intentionally did not include it in the proposal toremove many of the previous sections. While this renumbering would have probably happenedwithout my submitting this comment, I wanted to be clear that I did not intend to omit this section.


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20.7.2

The following unsprinklered combustible concealed spaces shall not require a minimum design area of

sprinkler operation of 3000 ft2 (280 m2):

(1) Noncombustible and limited-combustible concealed spaces with minimal combustible loading havingno access. The space shall be considered a concealed space even with small openings such as thoseused as return air for a plenum.

(2) Noncombustible and limited-combustible concealed spaces with limited access and not permittingoccupancy or storage of combustibles. The space shall be considered a concealed space even withsmall openings such as those used as return air for a plenum.

(3) Combustible concealed spaces filled entirely with noncombustible insulation.

(4) Concealed spaces where rigid materials are used and the exposed surfaces have a flame spreadindex of 25 or less and the materials have been demonstrated to not propagate fire more than 10.5 ft(3.2 m) when tested in accordance with ASTM E 84, Standard Test Method for Surface BurningCharacteristics of Building Materials, or ANSI/UL 723, Standard for Test for Surface BurningCharacteristics of Building Materials, extended for an additional 20 minutes in the form in which theyare installed in the space.

(5) Concealed spaces in which the exposed materials are constructed entirely of fire retardant–treatedwood as defined by NFPA 703.

(6) Concealed spaces over isolated small compartments not exceeding 55 ft2 (5.1 m2) in area.

(7) Vertical pipe chases under 10 ft2 (0.9 m2), provided that in multifloor buildings the chases arefirestopped at each floor using materials equivalent to the floor construction. Such pipe chases shallcontain no sources of ignition, piping shall be noncombustible, and pipe penetrations at each floor shallbe properly sealed.

(8) Exterior columns under 10 ft2 (0.9 m2) in area formed by studs or wood joists, supporting exteriorcanopies that are fully protected with a sprinkler system.

(9) Cavities within unsprinklered wall spaces.


This needs to be consistent with Chapter 19, which accepted this chance at the First Draft. There are two other items that are in Chapter 19 that are not here, but I have not had time to compare them to see what else is missing.

Related Item

FR 898




Street Address:

City:

State:

Zip:



370 of 518 10/27/2017, 7:12 AM

Committee Statement

CommitteeAction:

Accepted


Statement: This needs to be consistent with Chapter 19, which accepted this chance at the First Draft. Thereare two other items that are in Chapter 19 that are not here, but I have not had time to comparethem to see what else is missing.


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20.12.2.5

When hose valves for fire department use are attached to wet pipe sprinkler system risers in accordancewith 16.15.2, the following shall apply:

(1) The water supply shall not be required to be added to standpipe demand as determined from NFPA 14.

(2) Where the combined sprinkler system demand and hose stream allowance of Chapter 12 andChapters 14 through 20 through 25 exceeds the requirements of NFPA 14, this higher demand shallbe used.

(3) For partially sprinklered buildings, the sprinkler demand, not including hose stream allowance, asindicated in Chapter 12 and Chapters 14 through 20 through 25 shall be added to the requirementsgiven in NFPA 14.


In Section 20.12.2.5 the references are from the 2016 edition of the NFPA 13. These matters need to be revised to match the new chapter structure for the standard.

Related Item

FR-210




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: In Section 20.12.2.5 the references are from the 2016 edition of the NFPA 13. These mattersneed to be revised to match the new chapter structure for the standard.


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Sections] ]

Where fireproofing of building columns is not provided and storage heights are in excess of 15 ft (4.6 m),protection of building columns located wholly or partially within the rack footprint inclusive of flue spaces orwithin 12 in. (300 mm) of the footprint shall be protected in accordance with one of the following:

(1) In-rack sprinklers

(2) Sidewall sprinklers at the 15 ft (4.6 m) elevation, pointed toward one side of the steel column

(3) Provision of ceiling sprinkler density for a minimum of 2000 ft2 (186 m2) with ordinary 165°F (74°C) orhigh-temperature 286°F (140°C) rated sprinklers as shown in Table 20.15.1 for storage heights above15 ft (4.6 m), up to and including 20 ft (6.1 m)

(4) Provision of CMSA or ESFR ceiling sprinkler protection

Table 20.15.1 Ceiling Sprinkler Densities for Protection of Steel Building Columns

Commodity Classification

Aisle Width

4 ft (1.2 m) 8 ft (2.4 m)

gpm/ft2 (L/min)/m2 gpm/ft2 (L/min)/m2

Class I 0.37 15.1 0.33 13.4

Class II 0.44 17.9 0.37 15.1

Class III 0.49 20.0 0.42 17.1

Class IV and Group A plastics 0.68 27.7 0.57 23.2


In the First Draft Report, Section 20.15.1 only addresses Class I to IV commodities. Section 17.1.4 of the 2016 edition of NFPA 13, contains the provisions for column protection are provided of Group A plastics, which are the same as for Class IV. This Comment is to bring that information over into the new Chapter 20.

Related Item

FR-910




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted



373 of 518 10/27/2017, 7:12 AM

Statement: In the First Draft Report, Section 20.15.1 only addresses Class I to IV commodities. Section 17.1.4of the 2016 edition of NFPA 13, contains the provisions for column protection are provided of GroupA plastics, which are the same as for Class IV. This Comment is to bring that information over intothe new Chapter 20.


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20.16 Alternative Protection Scheme A.

Class I, II, III, IV commodities requiring a greater level of protection than is available from the overheadsprinkler system shall be permitted to be protected in accordance with 20.16.1.1 through 20.16.1.7 .

20.16.1

Class I, II, III, IV, and Group A plastic commodities requiring a greater level of protection than is availablefrom the overhead sprinkler system shall be permitted to be protected in accordance with 20.16.1.1through 20.16.1.7 .

20.16.1.1

Where the storage rack will not be solely dedicated to the storage of commodities requiring a greater levelof protection than is available from the overhead sprinkler system, either of the following shall apply:

(1) Extend the protection prescribed by Section 20.16 horizontally one pallet load in all directionsbeyond the commodity storage area requiring the higher level of protection.

(2) Install a vertical barrier to segregate the commodities requiring the higher level of protection from anyadjacent commodities.

20.16.1.2

Commodities that can be protected by the ceiling-level sprinkler system shall be permitted to be storedvertically above and horizontally adjacent to the portions of the storage rack equipped as prescribed bySection 20.16 .

20.16.1.3 Horizontal Barriers.

Horizontal barriers shall be installed at every tier level of the dedicated storage rack where the rack isequipped with solid shelves.

20.16.1.3.1

Where the dedicated storage rack is open-frame, horizontal barriers shall be installed at vertical incrementsnot exceeding 12 ft (3.6 m).

20.16.1.3.2

The barriers shall span horizontally so that all flue spaces within the rack bay are covered.

20.16.1.3.3

A maximum 3 in. (75 mm) wide gap shall be permitted at rack uprights.

20.16.1.3.4

The solid barrier shall be installed on a horizontal plane within a rack, beneath which in-rack sprinklersshall be installed, as follows:

(1) The barrier shall be constructed of minimum 22 gauge (0.7 mm) sheet metal or of minimum 3 ⁄ 8 in.(10 mm) plywood.

(2) The barrier shall extend to both aisle faces of the racks, covering up both the longitudinal and thetransverse flue spaces of the rack bays in which they are installed.

(3) The barrier shall be fitted to within 3 in. (75 mm) of any vertical rack member or other equipment thatwould create an opening, such as vertical in-rack sprinkler pipe drops.

20.16.1.4 In-Rack Sprinklers.


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Minimum K-8.0 (K-115) quick-response sprinklers (ceiling-level or in-rack) shall be installed beneath eachhorizontal barrier. The deflector of the sprinkler shall be located as close to the underside of the horizontalbarrier as possible.

20.16.1.4.1 Single-Row Racks.

(A)

For single-row racks, sprinklers shall be installed at each rack upright and at each rack mid-bay as shownin Figure 20.16.1.4.1(A) .

Figure 20.16.1.4.1(A) Alternative Protection for Single-Row Racks.

(B)

The maximum linear spacing between sprinklers shall not exceed 5 ft (1.5 m).

20.16.1.4.2 Double-Row Racks.


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(A)

For double-row racks, sprinklers shall be installed at each rack upright within the longitudinal flue spaceand at the face of the rack and at the mid-bay face of each rack bay as shown in Figure 20.16.1.4.2(A) .

Figure 20.16.1.4.2(A) Alternative Protection for Double-Row Racks.

(B)

The maximum linear spacing between sprinklers shall not exceed 5 ft (1.5 m) at the rack face and 10 ft(3.0 m) within the longitudinal flue space.

20.16.1.4.3 Multiple-Row Racks.


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(A)

For multiple-row racks, an alternating sprinkler arrangement shall be installed within adjacent transverseflue spaces as shown in Figure 20.16.1.4.3(A) , with sprinklers at the face of each flue space.

Figure 20.16.1.4.3(A) Alternative Protection for Multiple-Row Racks.

(B)

The maximum linear spacing between sprinklers at the face and at each alternating bay shall not exceed 5ft (1.5 m) and shall not exceed 10 ft (3.0 m) between sprinklers at every other bay.

20.16.1.5

The design of an in-rack sprinkler system shall be based on a minimum flow of 60 gpm (230 L/min) fromthe most remote six sprinklers for single-row racks or the most remote eight sprinklers for both double-rowand multiple-row racks.

20.16.1.6

The in-rack sprinkler demand shall not be required to be hydraulically balanced with the ceiling-levelsprinkler system.

20.16.1.7 Ceiling Sprinkler System.

The ceiling-level sprinkler system shall be designed based on the highest commodity hazard not protectedby the criteria prescribed by 20.16 .


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The existing Alternative Protection In-rack Sprinkler option is repeated in Section 20.16 and Section 25.8 in the First Draft. I suggest deleting Section 20.16 and consolidating all of the Alternative Protection In-rack Sprinkler options to 25.8 to make NFPA 13 easier to use.

Related Item

FR-903


Submitter Full Name: Steven Wolin

Organization: Reliable Automatic Sprinkler Co., Inc.

Street Address:

City:

State:

Zip:


Committee Statement


Resolution: See the SR created by the committee to address Chapter 25.


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20.17 Alternative Protection Scheme B

The protection of Group A plastic commodities requiring a greater level of protection than is available fromthe overhead sprinkler system shall be permitted to be protected in accordance with 20.17.1.2.10.1through 20.17.1.2.10.7.

20.17.1.2.10.1 Where the storage rack will not be solely dedicated to the storage of commodities requiringa greater level of protection than is available from the overhead sprinkler system, either of the following shall apply:

(1) Extend the protection prescribed by 20. 17.1.2.10 horizontally one pallet load in all directions beyondthe commodity storage area requiring the higher level of protection.

(2) Install a vertical barrier to segregate the commodities requiring the higher level of protection fromany adjacent commodities.

20.17.1.2.10.2 Commodities that can be protected by the ceiling level sprinkler system shall be permittedto be stored vertically above and horizontally adjacent to the portions of the storage rack equippedas prescribed by 20. 17.1.2.10.

20.17.1.2.10.3 Horizontal Barriers. Horizontal barriers shall be installed at every tier level of thededicated storage rack where the rack is equipped with solid shelves.

20.17.1.2.10.3.1 Where dedicated storage of cartoned Group A plastic commodity is in open-frameracks, horizontal barriers shall be installed at vertical increments not exceeding 30 ft (9.1 m).

20. 17.1.2.10.3.2 Where dedicated storage of exposed Group A plastic commodity is in open-frameracks, horizontal barriers shall be installed at vertical increments not exceeding 20 ft (6.1 m).

20. 17.1.2.10.3.3 The barriers shall span horizontally so that all flue spaces within the rack bay arecovered.

20. 17.1.2.10.3.4 A maximum 3 in. (75 mm) wide gap shall be permitted at rack uprights.

20. 17.1.2.10.3.5 The solid barrier shall be installed on a horizontal plane within a rack, beneathwhich in-rack sprinklers shall be installed, as follows:

(A) The barrier shall be constructed of minimum 22 gauge (0.7 mm) sheet metal or of minimum 3 ⁄ 8in. (10 mm) plywood.

(B) The barrier shall extend to both ends and both aisle faces of the racks covering up boththe longitudinal and transverse flue spaces of the rack bays in which they are installed.

(C) The barrier shall be fitted to within 3 in. (75 mm) of any vertical rack member or other equipmentthat would create an opening, such as vertical in-rack sprinkler pipe drops.

20. 17.1.2.10.4 In-Rack Sprinklers. Intermediate temperature extended coverage CMDA pendentstorage sprinklers with a nominal K-factor of K-25.2 (360) shall be installed beneath each horizontalbarrier. The deflector of the sprinkler shall be located as close to the underside of the horizontal barrier aspossible.

17.1.2.10.4.1 Single-Row Racks.

(A) For single-row racks, sprinklers shall be installed at each rack mid-bay as shown inFigure 20. 17.1.2.10.4.1(A) for cartoned Group A plastic commodity and Figure 20. 17.1.2.10.4.1(B)for exposed Group A plastic commodity.

(B) The maximum linear spacing between sprinklers shall not exceed 10 ft (3.1 m).

17.1.2.10.4.2 Double-Row Racks .

(A) For double-row racks, sprinklers shall be installed within the longitudinal flue space at each rackmidbay as shown in Figure 20. 17.1.2.10.4.2(A) for cartoned Group A plastic commodity andFigure 20. 17.1.2.10.4.2(B) for exposed Group A plastic commodity.


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17.1.2.10.4.3 Multiple-Row Racks.

(A) For multiple-row racks with an overall depth between aisles not exceeding 15 ft 6 in. (4.7 m),an alternating sprinkler arrangement shall be installed within adjacent transverse flue spaces asshown in Figure 20. 17.1.2.10.4.3(A) for cartoned Group A plastic commodity andFigure 20. 17.1.2.10.4.3(B) for exposed Group A plastic commodity.

(B) The maximum linear spacing between sprinklers at the face shall not exceed 10 ft (3.1 m) andshall not exceed 10 ft (3.1 m) between sprinklers at every other bay.

20. 17.1.2.10.5 The design of an in-rack sprinkler system shall be based on a minimum flow of 138 gpm(520 L/min) from the most remote five sprinklers for single-row and double-row racks or the most remotenine sprinklers (three at each face and three in-between) for multiple-row racks.

20. 17.1.2.10.6 The in-rack sprinkler demand shall not be required to be hydraulically balanced withthe ceiling-level sprinkler system.

20. 17.1.2.10.7 Ceiling Sprinkler System. The ceiling-level sprinkler system shall be designed based onthe highest commodity hazard not protected by the criteria prescribed by 20. 17.1.2.10.


As proposed in CI-931 based on PI-453. This section should have been an FR based on balloting.

The proposed section adds criteria for extended coverage K-25.2 pendent in-rack sprinklers. The proposed criteria is based on a series of full-scale fire tests conducted at UL. The proposed section mirrors the existing Alternative Protection criteria for consistency.

Related Item

CI-931





Street Address:

City:

State:

Zip:


Committee Statement


Resolution: See the SR created by the committee addressing Chapter 25.


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20.17 Protection of Car Stackers and Car Lift Systems.

20.17.1 Car stackers and car lift systems with cars stacked 2 vertically shall be protected as an extrahazard group 2 occupancy. Reduction in overhead area of application shall be allowed in accordance with20.17.3

20.17.2 Car stackers and car lift systems with cars stacked more than 2 vertically shall be protected asfollows:

1. An automatic overhead wet-pipe sprinkler system designed to Extra Hazard Group 1. Reductionin the overhead area of application shall be allowed in accordance with 20.17.3; and

2. Standard coverage sidewall sprinklers listed for ordinary hazard shall be provided under eachparking level, including the bottom level if the car stacker or car lift system is provided with a pit. Each sidewall sprinkler shall cover an area not to exceed 80 square feet; and

3. Flow from all sprinklers in the area of application including those at the ceiling and those beloweach level of the car stacker shall be included in the hydraulic calculation.

20.17.3 The area of application of the overhead system may be reduced from the required 2500 sq. ft. butnot less than 1500 square feet if

(1) 1-hour fire rated walls are provided to separate the car stacker areas from the standard parking stalls,and

(2) The car stacker areas are divided up into areas by 1-hour fire rated walls, and

(3) One-hour fire rated walls are provided to separate the car stacker areas from any other areas in thegarage, though no separation is required from the drive aisles.


Currently, NFPA 13 does not address how to handle cars in car stacker and car lift systems when they are stacked more than two vertically. The proposed added language addresses this gap.

Related Item

PI-218


Submitter Full Name: Sagiv Weiss-Ishai

Organization: San Francisco Fire Department

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: No technical data was submitted to support the proposed design schemes. The TechnicalCommittee encourages the submitter to resubmit next cycle with technical data to support theproposal. The committee is aware of the testing that was performed by BRE of the UK.


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21.3.4

The ceiling-only protection criteria specified in Chapter 17 for Chapter 21 for rack storage of Group Aplastic commodities shall be permitted to be used for solid-piled and palletized storage of the samecommodity at the same height and clearance to ceiling.


Corrected Chapter reference.

Related Item

FR 782




Street Address:

City:

State:

Zip:


Committee Statement



Statement: Corrected Chapter reference.


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Public Comment No. 197-NFPA 13-2017 [ Sections 21.3.5, 21.3.6, 21.3.7 ]

Sections 21.3.5, 21.3.6, 21.3.7

21.3.5 3.1 *

For Table 21.3.3(a) and Table 21.3.3(b), the design areas shall be as follows:

(1) The area shall be a minimum of 2500 ft2 (232 m2).

(2) Where Table 21.3.3(a) and Table 21.3.3(b) allow densities and areas to be selected in accordance withCurve EH1 and Curve EH2 of Figure 13.2.1, any density/area from the curves in Figure 13.2.1 shall bepermitted. When selecting a point from the EH1 or EH2 density/area curves of Figure 13.2.1, thefollowing area reductions shall be permitted:

(3) For K-8.0 (115) sprinklers used with Curve EH1, the design area shall be permitted to be reduced

by 25 percent, but not below 2000 ft 2 (186 m 2 ), where high temperature sprinklers are used.

(4) For K-11.2 (160) or larger sprinklers, the design area shall be permitted to be reduced by

25 percent, but not below 2000 ft 2 (186 m 2 ), regardless of temperature rating.

(5) For closed arrays, the area shall be permitted to be reduced to 2000 ft2 (186 m2).

21.3.6 3.2 *

Interpolation of densities between storage heights shall be permitted.

21.3. 6.1

Densities shall be based on the 2500 ft 2 (232 m 2 ) design area.

21.3.6.2 3.3

Interpolation of ceiling/roof heights shall not be permitted.

21.3.7 5

For storage of Group A plastics between 5 ft (1.5 m) and 12 ft (3.7 m) in height, the installationrequirements for extra hazard systems shall apply.


Some of the information is redundant and can be eliminated. The rest of the information in 21.3.5 and 21.3.6 specifically applies to 21.3.3 and should be subsections to that sections, rather than after that section. Finally, section 21.3.7 needs to be renumbered to 21.3.5 since there is already a section 21.3.4.

Related Item

FR 782




Street Address:

City:

State:

Zip:



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Committee Statement

CommitteeAction:

Accepted


Statement: Some of the information is redundant and can be eliminated. The rest of the information in 21.3.5and 21.3.6 specifically applies to 21.3.3 and should be subsections to that sections, rather thanafter that section. Finally, section 21.3.7 needs to be renumbered to 21.3.5 since there is already asection 21.3.4.


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21.5.4.4

The minimum water supply requirements for a hydraulically designed occupancy hazard fire controlsprinkler system shall be determined by adding the hose stream allowance from Table 21.5.4.4 to thewater supply for sprinklers determined in Section 17.3.

Table 21.5.4.4 Hose Stream Allowance and Water Supply Duration Requirements for Rack Storage ofGroup A Plastic Commodities Stored Over 25 ft (7.6 m) in Height

Commodity Classification Storage Height Inside Hose Total Combined Inside and Outside Hose Duration(minutes) ft m gpm L/min gpm L/min Plastic >25 >7.6 0, 50, or 100 0, 190, or 380 500 1900 120


Section 21.5.4.4 and Table 21.5.4.4 are redundant. They deal with hose stream and water supply issues that are addressed in Section 20.12.2.6 and Table 20.12.2.6. Therefore, this redundat information should be deleted.

Related Item

FR-900




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: Section 21.5.4.4 and Table 21.5.4.4 are redundant. They deal with hose stream and water supplyissues that are addressed in Section 20.12.2.6 and Table 20.12.2.6. Therefore, this redundatinformation should be deleted.


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21.6.2

Reduced-Discharge Density. Where high-expansion foam systems are installed in accordance withNFPA 11, a reduction in sprinkler discharge density to one-half the density specified in Table 21.6.1(a) or0.24 gpm/ft2 (9.8 mm/min), whichever is higher, shall be permitted.


Section 21.8.1.3 about reduced density with the use of Hi-X foam should be moved to 21.6.2 to go with the applicable subject of tire storage.

Related Item

FR-900




Street Address:

City:

State:

Zip:


Committee Statement


Resolution: This is redundant text and is found in Chapter 20.


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21.6.1 Ceiling Systems.


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Protection of rubber tire storage shall be selected from Table 21.6.1(a) or Table 21.6.1(b).

Table 21.6.1(a) Protection Criteria for Rubber Tire Storage Using Control Mode Density/Area Sprinklers

Piling Method

Pile Height

[ft (m)]

SprinklerDischarge Density

[gpm/ft2 over ft2

( mm/min over m2)]

(see Note 1)

Areas of Application

[ft2(m2)]

(see Note 1)

OrdinaryTemperature

High

Temperature

(see Note 1)

(1) On-floor storage Up to 5 (1.5) 0.19 (0 7 .72 7 ) 2000 (186) 2000 (186)

(a) Pyramid piles, on-sideOver 5 (1.5) to12 (3.7)

0.30 (1 12 .1 2 ) 2500 (232) 2500 (232)

(b) Other arrangementssuch that no horizontalchannels are formed (seeNote 2)

Over 12 (3.7)to 18 (5.5)

0.60 (2 24 .3 4 ) Not allowed 2500 (232)

(2) On-floor storage Up to 5 (1.5) 0.19 (0 7 .72 7 ) 2000 (186) 2000 (186)

Tires, on-treadOver 5 (1.5) to12 (3.7)

0.30 (1 12 .1 2 ) 2500 (232) 2500 (232)

(3) Palletized portable rackstorage

Up to 5 (1.5) 0.19 (0 7 .72 7 ) 2000 (186) 2000 (186)

On-side or on-tread

Over 5 (1.5) to20 (6.1)

See Table 18.4(b) — —

Over 20 (6.1)to 30 (9.1)

0.30 (1 12 .1 2 ) plushigh-expansion foam

3000 (280) 3000 (280)

(4) Palletized portable rackstorage, on-side

Up to 5 (1.5) 0.19 (0 7 .72 7 ) 2000 (186) 2000 (186)

Over 5 (1.5) to20 (6.1)

See Table 18.4(b) — —

Over 20 (6.1)to 25 (7.6)

0.60 (2 24 .2 4 ) and Not allowed 5000 (465)

0.90 (3 36 .4 7 ) (seeNote 3) or

Not allowed 3000 (280)

0.75 (2 30 .8 6 ) with1-hour fire-resistiverating of roof andceiling assembly


(5) Open portable rackstorage, on-side or on-tread

Up to 5 (1.5) 0.19 (0 7 .72 7 ) 2000 (186) 2000 (186)

Over 5 (1.5) to12 (3.7)

0.60 (2 24 .2 4 ) 5000 (465) 3000 (280)

Over 12 (3.7)to 20 (6.1)

0.60 (2 24 .2 4 ) and Not allowed 5000 (465)

0.90 (3 36 .4 7 ) (seeNote 3) or



3000 (280) 3000 (280)

(6) Open portable rackstorage, laced

Over 12 (3.7)to 20 (6.1)

0.60 (2 24 .2) and Not allowed 5000 (465)

0.90 (3 36 .4 7 ) (seeNotes 3 and 5)



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Piling Method

Pile Height

[ft (m)]

SprinklerDischarge Density

[gpm/ft2 over ft2

( mm/min over m2)]

(see Note 1)

Areas of Application

[ft2(m2)]

(see Note 1)

OrdinaryTemperature

High

Temperature

(see Note 1)

(7) Single-, double-, andmultiple-row fixed rackstorage on pallets, on-side,or on-tread without shelves

Up to 5 (1.5) 0.19 (0 7 .72 7 ) 2000 (186) 2000 (186)

Over 5 (1.5) to20 (6.1)

See Table 18.4(b) or0.40 (1 16 .5 3 ) plusone level in-racksprinklers or

3000 (280) 3000 (280)


3000 (280) 3000 (280)

Over 20 (6.1) to 30 (9.1)

0.30(1 12 .1 2 ) plushigh-expansionfoam


(8) Single-, double-, andmultiple-row fixed rackstorage without pallets orshelves, on-side or on-tread

Up to 5 (1.5) 0.19 (0 7 .72 7 ) 2000 (186) 2000 (186)

Over 5 (1.5) to12 (3.7)

0.60 (2 24 .2 4 ) 5000 (465) 3000 (280)

0.40 (1 16 .5 3 )plus one level in-rack sprinklers

3000 (280)3000(280)

Over 12 (3.7)to 20 (6.1)

0.60 (2 24 .2 4 ) and Not allowed 5000 (465)

0.90 (3 36 .4 7 ) (seeNote 3) or


0.40 (1 16 .5 3 ) plusone level in-racksprinklers or

3000 (280) 3000 (280)

0.30 (1 12 .1 2 ) plus high-expansion foam

3000 (280) 3000 (280)

Over 20 (6.1) to 30 (9.1)

0.30(1 12 .1 2 ) plushigh-expansionfoam


Notes:

(1) Sprinkler discharge densities and areas of application are based on a maximum clearance to ceiling of10 ft (3.0 m) with the maximum height of storage anticipated.

(2) Laced tires on-floor, vertical stacking on-side (typical truck tires), and off-road tires. Laced tires are notstored to a significant height by this method due to the damage inflicted on the tire (i.e., bead).

(3) Water supply shall fulfill both requirements.

(4) Shelf storage of rubber tires shall be protected as solid rack shelving.


391 of 518 10/27/2017, 7:12 AM

(5) This protection scheme is for use with K-16.8 (240) or larger control mode sprinklers only. Maximumclearance to ceiling can be increased to 14 ft (4.3 m) with this scheme.

Table 21.6.1(b) Control Mode Density/Area Sprinklers System Density (gpm/ft2 over ft2) for PalletizedPortable Rack Storage and Fixed Rack Storage of Rubber Tires with Pallets Over 5 ft (1.5 m) to 20 ft(3.7 m) in Height

Storage Height

[ft (m)]

Sprinkler Temperature

High Temperature Ordinary Temperature

>5 to 10 (1.5 to 3.0) 0.32/2000 (8. 1.2 /186) 0.32/2000 (8. 1.2 /186)

>10 to 12 (3.0 to 3.7) 0.39/2000 (1 15 .5 9 /186) 0.39/2600 (1 15 .5 9 /241)

>12 to 14 (3.7 to 4.3) 0.45/2000 (1 18 .7 3 /186) 0.45/3200 (1 18 .7 3 /300)

>14 to 16 (4.3 to 4.9) 0.5/2300 (1 20 .9 4 /214) 0.5/3700 (1 20 .9 4 /345)

>16 to 18 (4.9 to 5.5) 0.55/2600 (2 22 .1 4 /241) 0.55/4400 (2 22 .1 4 /410)

>18 to 20 (5.5 to 6.1) 0.6/3000 (2 24 .3 4 /280) 0.6/5000 (2 24 .3/465)


Editorial revision to correct metric density values.

Related Item

CI-810


Submitter Full Name: Audrey Goldstein

Organization: S Netanel Engineers and Consultants

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: Still minor errors compared to manual of conversion. The committee has been directed tocorrelate all metric conversions.


392 of 518 10/27/2017, 7:12 AM


21.8.1.2

A wet pipe system that is designed to provide a minimum of 0.6 gpm/ft2 (24.4 mm/min) density over a

minimum area of 2000 ft2 (186 m2) shall be permitted to protect single-row and double-row racks withslatted rack shelving where all of the following conditions are met:

(1) Sprinklers shall be K-11.2 (160), K-14.0 (200), or K-16.8 (240) orifice spray sprinklers with atemperature rating of ordinary, intermediate, or high and shall be listed for storage occupancies.

(2) The protected commodities shall be limited to Class I through Class IV, Group B plastics, Group Cplastics, cartoned (expanded and nonexpanded) Group A plastics, and exposed (nonexpanded) GroupA plastics.

(3) Slats in slatted rack shelving shall be a minimum nominal 2 in. (50 mm) thick by maximum nominal6 in. (150 mm) wide, with the slats held in place by spacers that maintain a minimum 2 in. (50 mm)opening between each slat.



(6) Longitudinal flue spaces at least 6 in. (152 mm) wide shall be provided for double-row racks.

(7) The aisle widths shall be at least 71⁄2 ft (2.3 m).

(8) The maximum roof height shall be 27 ft (8.2 m).


(10) Solid plywood or similar materials shall not be placed on the slatted shelves so that they block the 2 in.(50 mm) spaces between slats, nor shall they be placed on wire mesh shelves.


For slatted shelves in Section 21.8.1.2 the requirement for 6" longitudinal flues was deleted without and substantiation. Without any technical justification for the deletion, this requirement must be re-inserted.

Related Item

FR-900




Street Address:

City:

State:

Zip:


Committee Statement

Committee Rejected but see related SR


393 of 518 10/27/2017, 7:12 AM

Action:


Statement: For slatted shelves in Section 21.8.1.2 the requirement for 6" longitudinal flues was deletedwithout and substantiation. Without any technical justification for the deletion, this requirementmust be re-inserted.


394 of 518 10/27/2017, 7:12 AM


21.8.1.3 Reduced-Discharge Density.

Where high-expansion foam systems are installed in accordance with NFPA 11, a reduction in sprinkler

discharge density to one-half the density specified in Table 21.6.1(a) or 0.24 gpm/ft 2 (9.8 mm/min),whichever is higher, shall be permitted.


Section 21.8.1.3 about reduced density with the use of Hi-X foam should be moved to 21.6.2 to go with the applicable subject of tire storage.

Related Item

FR-900




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: Section 21.8.1.3 about reduced density with the use of Hi-X foam should be moved to 21.6.2 togo with the applicable subject of tire storage.


395 of 518 10/27/2017, 7:12 AM


21.11.6.2.1

Ceiling sprinklers spaced to cover a maximum of 100 ft2 (9.3 m2) shall be standard-response spraysprinklers with K-factors per Section 12 Section 21 .6 1 .


In Section 21.11.6.2.1 the reference to Section 20.6 is from the 2016 edition of the NFPA 13. This matter needs to be revised to match the new chapter structure for the standard.

Related Item

FR-900




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: In Section 21.11.6.2.1 the reference to Section 20.6 is from the 2016 edition of the NFPA 13. Thismatter needs to be revised to match the new chapter structure for the standard.


396 of 518 10/27/2017, 7:12 AM


23.1.2.3 Temperature Ratings.

Sprinkler temperature ratings for ESFR sprinklers shall be ordinary unless 8 9 .3 4 .2 requires intermediate-or high-temperature ratings.


In Section 23.1.2.3 the references are from the 2016 edition of the NFPA 13. These matters need to be revised to match the new chapter structure for the standard.

Related Item

FR-902




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:


Resolution: SR-328-NFPA 13-2017 Sprinkler temperature ratings are found in the installation Chapter 14.

Statement: In Section 23.1.2.3 the references are from the 2016 edition of the NFPA 13. These matters needto be revised to match the new chapter structure for the standard.


397 of 518 10/27/2017, 7:12 AM


23.1.4

The ceiling design criteria for single-, double-, and multiple-row racks in Chapter 23 shall be based on openrack configurations as defined in 3.9. 3.7 139 .4.

23.1.4.1

ESFR sprinklers shall not be permitted to protect storage on solid shelf racks unless the solid shelf racksare protected with in-rack sprinklers in accordance with Chapter 25.

23.1.4. 2

ESFR sprinklers shall not be permitted to protect storage on solid shelf racks unless the solid shelf racksare protected with in-rack sprinklers in accordance with 16.

1.

6.

23. 1 .4.2.1

Where solid shelves are used, in-rack sprinklers shall be installed in every level below the highest solidshelf.

23.1.4.3 2

ESFR sprinklers shall not be permitted to protect storage with open top containers.

23.1.4.4 3

ESFR sprinkler systems shall be designed such that the minimum operating pressure is not less than thatindicated in Table 23.5.1 for type of storage, commodity, storage height, and building height involved.


Revised to update the reference to the definition for open racks and to delete a duplicate line.

Related Item

FR-902




Street Address:

City:

State:

Zip:


Committee Statement



Statement: Revised to update the reference to the definition for open racks and to delete a duplicate line.


398 of 518 10/27/2017, 7:12 AM


23.3.1

Protection of palletized and solid-piled storage of Class I through Class IV commodities shall be inaccordance with Table 23.3.1.

Table 23.3.1 ESFR Protection of Palletized and Solid-Piled Storage of Class I Through Class IVCommodities

Commodity

MaximumStorageHeight

MaximumCeiling/Roof

HeightNominalK-Factor

Orientation

MinimumOperatingPressure

ft m ft m psi bar

Class I, II, III, or IV,encapsulated andnonencapsulated (no open-top containers)

20 6.1 25 7.6

14.0 (200)Upright/pendent

50 3.4


35 2.4

22.4 (320) Pendent 25 1.7

25.2 (360) Pendent 15 1.0

25 7.6

30 9.1


50 3.4


35 2.4

22.4 (320) Pendent 25 1.7

25.2 (360) Pendent 15 1.0

32 1014.0 (200)

Upright/pendent

60 4.1

16.8 (240) Upright/pendent 42 2.9

30 9.1 35 11


75 5.2


52 3.6

22.4 (320) Pendent 35 2.4

25.2 (360) Pendent 20 1.4

35 11 40 12

16.8 (240) Pendent 52 3.6

22.4 (320) Pendent 40 2.7

25.2 (360) Pendent 25 1.7

35 11 45 1422.4 (320) Pendent 40 2.7

25.2 (360) Pendent 40 2.7

40 12 45 1422.4 (320) Pendent 40 2.7

25.2 (360) Pendent 40 2.7



.1491243140559 K28 approval

EX5085-20150407-CertificateofCompliance.pdf


399 of 518 10/27/2017, 7:12 AM


Please add k28 sprinkler on table 23.3.1 and wherever applicable

Related Item

Table 23.3.1




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: This is new material and cannot be added to NFPA 13 at this time. This is outside the scope ofthe K28's listing.


400 of 518 10/27/2017, 7:12 AM



401 of 518 10/27/2017, 7:12 AM

23.4.2


402 of 518 10/27/2017, 7:12 AM

Protection of palletized and solid-piled storage of cartoned or exposed nonexpanded plastic and cartonedexpanded or exposed expanded plastic shall be in accordance with Table 23.4.2.

Table 23.4.2 ESFR Protection of Palletized and Solid-Piled Storage of Group A Plastic Commodities

StorageArrangement Commodity

MaximumStorage Height

MaximumCeiling/Roof

HeightNominalK-Factor Orientation


ft m ft m psi bar

Palletized andsolid-piledstorage (noopen-topcontainers)

Cartonednonexpanded

plastic20 6.1

25 7.6

14.0

(200)

Upright/

pendent

50 3.4

16.8

(240)

Uprigh

pende

22.4

(320)

25.2

(360)

30 9.1

14.0

(200)

16.8

(240)

22.4

(320)

25.2

(360)

3511 10.7

14.0

(200)

16.8

(240)

22.4

(320)

25.2

(360)

40 12 .2

16.8

(240)

22.4

(320)


403 of 518 10/27/2017, 7:12 AM



MaximumCeiling/Roof



ft m ft m psi bar

25.2

(360)

4514 13.7

22.4

(320)

25.2

(360)

25 7.6

30 9.1

14.0

(200)

Upright/

pendent

50

16.8

(240)

Upright/

pendent

35

22.4

(320)

Pendent 25

25.2

(360)

Pendent 15

3210 9.7

14.0

(200)

Upright/

pendent

60

16.8

(240)

Upright/

pendent

42

3511 10.7

14.0

(200)

Uprightorpendent

75

16.8

(240)

Upright/

pendent

52

22.4

(320)

Pendent 35

25.2

(360)

Pendent 20

40 12 .2

16.8

(240)

Pendent 52

22.4

(320)

Pendent 40


404 of 518 10/27/2017, 7:12 AM



MaximumCeiling/Roof



ft m ft m psi bar

25.2

(360)

Pendent 25

4514 13.7

22.4

(320)

Pendent 40

25.2

(360)

Pendent 40

30 9.1

3511 10.7

14.0

(200)

Upright/

pendent

75

16.8

(240)

Upright/

pendent

52

22.4

(320)

Pendent 35

25.2

(360)

Pendent 20

40 12 .2

16.8

(240)

Pendent 52

22.4

(320)

Pendent 40

25.2

(360)

Pendent 25

4514 13.7

22.4

(320)

Pendent 40

25.2

(360)

Pendent 40

35 10.7 40 12 .2

16.8

(240)

Pendent 52

22.4

(320)

Pendent 40

25.2

(360)

Pendent 25


405 of 518 10/27/2017, 7:12 AM



MaximumCeiling/Roof



ft m ft m psi bar

4514 13.7

22.4

(320)

Pendent 40

25.2

(360)

Pendent 40

40 12.2 4514 13.7

22.4

(320)

Pendent 40

25.2

(360)

Pendent 40

Exposednonexpanded

plastic20 6.1

25 7.6

14.0

(200)

Pendent 50 3.4

16.8

(240)

Pendent 35 2.4

30 9.1

14.0

(200)

Pendent 50 3.4

16.8

(240)

Pendent 35 2.4

3511 10.7

14.0

(200)

Pendent 75 5.2

16.8

(240)

Pendent 52 3.6

40 12 .2

16.8

(240)

Pendent 52 3.6

25 7.6

30 9.1

14.0

(200)

Pendent 50

16.8

(240)

Pendent 35

32 9.7

14.0

(200)

Pendent 60

16.8

(240)

Pendent 42


406 of 518 10/27/2017, 7:12 AM



MaximumCeiling/Roof



ft m ft m psi bar

3511 10.7

14.0

(200)

Pendent 75

16.8

(240)

Pendent 52

40 12 .2

16.8

(240)

Pendent 52

22.4

(320)

Pendent 50

25.2

(360)

Pendent 50

30 9.1

3511 10.7

14.0

(200)

Pendent 75

16.8

(240)

Pendent 52

40 12 .2

16.8

(240)

Pendent 52

22.4

(320)

Pendent 50

25.2

(360)

Pendent 50

35 11 40 12 .2

16.8

(240)

Pendent 52

22.4

(320)

Pendent 50

25.2

(360)

Pendent 50

Cartonedexpanded

plastic20 6.1 25 7.6

14.0

(200)

Upright/

pendent

50 3.4

16.8

(240)

Upright/

pendent

35 2.4


407 of 518 10/27/2017, 7:12 AM



MaximumCeiling/Roof



ft m ft m psi bar

30 9.1

14.0

(200)

Upright/

pendent

50 3.4

16.8

(240)

Upright/

pendent

35 2.4

25 7.6

30 9.1

14.0

(200)

Upright/

pendent

50 3.4

16.8

(240)

Upright/

pendent

35 2.4

3210 9.7

14.0

(200)

Pendent 60 4.1

16.8

(240)

Upright/

pendent

42 2.9

Exposed*expanded

plastic25 7.6 40 12 .2

25.2

(360)

Pendent 60 4.1

*Applies to closed array storage only.



metric_conversion.doc wrong metric conversion


I kindly recommend the Technical Committee to back review to 2010 Edition all Imperial to Metric conversion. Most of new rounded numbers are very different from reality and are causing huge troubles for non-US application of NFPA13, mostly because changes are not uniform for all tables + diagrams. If you want to round all numbers as new standard values (i.e. 45ft = 14m instead of 13.7m) do it, but everywhere, not only for some tables. One foot rounding more or less will affect a lot in warehouses costs. Thanks so much to pay attention

Related Item

table 23.4.2




Street Address:

City:

State:

Zip:



408 of 518 10/27/2017, 7:12 AM

Committee Statement

CommitteeAction:

Rejected

Resolution: Still minor errors compared to manual of conversion. The committee has been directed tocorrelate all metric conversions.


409 of 518 10/27/2017, 7:12 AM

Since you introduced Metric converted tables and diagrams, many troubles have been caused in Europe for

NFPA application. Building height discrepancy +/‐ 300mm due to wrong conversion from Imperial sizes, may

affect billions dollars. More, you applied new wrong/rounded Imperial‐to‐Metric conversions not for all

diagrams, but only for some of them, increasing the confusion. Therefore I kindly ask you to apply the old

and right conversions till 2010 edition to cancel any misunderstanding. To resume, most of significant:

10.7m = 35ft NO 11m

12.2m = 40ft NO 12m

13.7m = 45ft NO 14m‐ 0.3m = 1ft. A warehouse may be 1ft taller it means a huge volume of goods, but

that’s wrong

All above is for every table and diagram where you introduced new “wider” rounding in metric conversion.

It means a huge change in design approach for storages, but if you want to do that, you have to do it

homogeneous everywhere, not spotted as 2013 + 2016 editions


23.7.4.1

The maximum sprinkler deflector distance below the ceiling shall be 14 18 in. (350 mm).


While it is acknowledge that the testing was conducted with a 14 in. deflctor distance, the K-25.2 ESFR sprinklers are listed with an 18 in. deflector distance and these installations should be allowed to follow the listing parameters of the sprinklers. The large pipe sizes and large frame sizes associated with ESFR sprinklers are such that installing to the 14 in. level can become extremely difficult, so the lower elevations should be permitted. If the protection scheme is so sensitive to the deflector distance that was used during the testing cannot be varied, that criteria should never have been accepted into the NFPA standard.

Related Item

PI-459

FR-785




Street Address:

City:

State:

Zip:


Committee Statement


Resolution: 14 inches is in accordance with the fire tests that have been run.


410 of 518 10/27/2017, 7:12 AM


23.7.4.1

The maximum sprinkler deflector distance below the ceiling shall be 14 in. (350 mm).


An FDS model was performed on a 35'-0" tall, double row rack configuration with a fire in the middle of four sprinklers at an elevation of 18" below a 40'-0" deck and an elevation of 14" below the same deck using a rapid fire growth model consistent with exposed expanded group A plastics. The model produced the time the average temperature of four sprinklers reached the 212 degree activation point. The results indicated that a 1/2 second delay was observed between the 14" and 18" elevation. The fire growth on a T-squared fire resulted in a growth of 963 kW which equates to less than 1% of the total fire growth. Therefore, the current criteria for all ESFR 25.2 requirements of a maximum 18" to the deck should be maintained and acceptable. Additionally, The current 2016 edition of NFPA 13 does not require a 14" maximum deck height. If this requirement is added to the 2019 Edition, it will not only affect the constructability of the system, but the current systems being installed with an 18" deflector design.

Related Item





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: 14 inches is in accordance with the fire tests that have been run. The modeling referenced in thesubstantiation was not submitted for the committee to review.


411 of 518 10/27/2017, 7:12 AM

Public Comment No. 179-NFPA 13-2017 [ New Section after 23.13 ]

23.13.1 Slatted rack shelves shall be considered equivalent to solid rack shelves where theshelving is not considered open rack shelving or where the requirements of 23.13.2 are not met.(see Section C.20.)

23.13.2 A wet pipe system that is designed to provide a minimum of 0.6 gpm/ft2 (24.4 mm/min) densityover a minimum area of 2000 ft2 (186 m2) or K-14.0 (200) ESFR sprinklers operating at a minimum of 50psi (3.4 bar), K-16.8 (240) sprinklers operating at a minimum of 32 psi (2.2 bar), K-22.4 (320) ESFRsprinklers operating at a minimum of 25 psi (1.7 bar), or K-25.2 (360) ESFR sprinklers operating at aminimum of 15 psi (1.0 bar) shall be permitted to protect single-row and double-row racks with slatted rackshelving where all of the following conditions are met:

(1) Sprinklers shall be K-11.2 (160), K-14.0 (200), or K-16.8 (240) orifice spray sprinklers with atemperature rating of ordinary, intermediate, or high and shall be listed for storage occupancies or shallbe K-14.0 (200), K-16.8 (240), K-22.4 (320) ESFR, or K-25.2 (360) ESFR.

(2) The protected commodities shall be limited to Class I through Class IV, Group B plastics, Group Cplastics, cartoned (expanded and nonexpanded) Group A plastics, and exposed (nonexpanded) Group Aplastics.

(3) Slats in slatted rack shelving shall be a minimum nominal 2 in. (50 mm) thick by maximum nominal 6in. (150 mm) wide, with the slats held in place by spacers that maintain a minimum 2 in. (50 mm) openingbetween each slat.



(6) Longitudinal flue spaces at least 6 in. (150 mm) wide shall be provided for double-row racks.Longitudinal flue spaces shall not be required where ESFR sprinklers are used.

(7) The aisle widths shall be at least ⁷¹⁄2 ft (2.3 m).

(8) The maximum roof height shall be 27 ft (8.2 m) or 30 ft (9.1 m) where ESFR sprinklers are used.


(10) Solid plywood or similar materials shall not be placed on the slatted shelves so that they block the 2in. (50 mm) spaces between slats, nor shall they be placed on wire mesh shelves.


No subsections have been relocated to the Slatted Shelves heading. Add the requirements for slatted shelves from NFPA 13 (2016) 16.2.4.1 and 17.2.4.1 for protection. Changing wording from unexpanded to nonexpanded for consistency throughout NFPA 13. This should also be considered for addition in Chapter 25.

Related Item

FR-902





Street Address:


412 of 518 10/27/2017, 7:12 AM

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: In the First Draft Report, Chapter 23, Section 23.13 for Slatted Shelves consists of just a title line.ESFR protection of slatted shelves is covered in 16.2.4.1 and 17.2.4.1 of NFPA 13-2016, so thatinformation needs to be brought forward into this new ESFR chapter.


413 of 518 10/27/2017, 7:12 AM


23.13 Slatted Shelves.

23.13.1* Slatted rack shelves shall be considered equivalent to solid rack shelves where the shelving isnot considered open rack shelving or where the requirements of 23.13.1 are not met. (See Section C.20.)

23.13.2 A wet pipe system that is designed to provide K-14.0 (200) ESFR sprinklers operating at aminimum of 50 psi (3.4 bar), K-16.8 (240) sprinklers operating at a minimum of 32 psi (2.2 bar), or K-25.2(360) ESFR sprinklers operating at a minimum of 15 psi (1.0 bar) shall be permitted to protect single-and double-row racks with slatted rack shelving racks where all of the following conditions are met:

(1) Sprinklers shall be K-14.0 (200), K-16.8 (240), or K-25.2 (360) ESFR.

(2) The protected commodities shall be limited to Class I through Class IV, Group B plastics, Group Cplastics, cartoned (expanded and unexpanded) Group A plastics, and exposed (unexpanded) Group Aplastics.

(3) Slats in slatted rack shelving shall be a minimum nominal 2 in. (50 mm) thick by maximum nominal 6in. (150 mm) wide with the slats held in place by spacers that maintain a minimum 2 in. (50 mm) openingbetween each slat.



(6) The aisle widths shall be at least ⁷¹⁄2 ft (2.3 m).

(8) The maximum roof height shall 30 ft (9.1 m)


(10) Solid plywood or similar materials shall not be placed on the slatted shelves so that they block the 2in. (50 mm) spaces between slats, nor shall they be placed on the wire mesh shelves.


In the First Draft Report, Chapter 23, Section 23.13 for Slatted Shelves consists of just a title line. ESFR protection of slatted shelves is covered in 16.2.4.1 and 17.2.4.1 of NFPA 13-2016, so that information needs to be brought forward into this new ESFR chapter.

Related Item

FR-902




Street Address:

City:

State:

Zip:


Committee Statement


414 of 518 10/27/2017, 7:12 AM

CommitteeAction:



Statement: In the First Draft Report, Chapter 23, Section 23.13 for Slatted Shelves consists of just a title line.ESFR protection of slatted shelves is covered in 16.2.4.1 and 17.2.4.1 of NFPA 13-2016, so thatinformation needs to be brought forward into this new ESFR chapter.


415 of 518 10/27/2017, 7:12 AM

Public Comment No. 217-NFPA 13-2017 [ Sections 24.1.2, 24.1.3 ]

Sections 24.1.2, 24.1.3

24.1.2

The requirements of Chapters 12 20 through 20 25 shall apply unless modified by this chapter.

24.1.2.1

Sprinklers having standard coverage areas that require up to 20 sprinklers to be included in the hydrauliccalculation shall be installed in accordance with 14.2.3, 14.2.4, 14.2.4.1 and 21.12.6.

24.1.2.1.1

Quick-response sprinklers shall also be installed in accordance with 14.2.5.1 and 14.2.5.2.

24.1.2.2

Sprinklers having extended coverage areas that require up to 10 sprinklers to be included in the hydrauliccalculation shall be installed in accordance with 14.2.3, 14.2.4, 14.2.4.1 and 21.12.6.

24.1.2.2.1

Quick-response sprinklers shall also be installed in accordance with 14.2.5.1 and 14.2.5.2.

24.1.3

The in-rack protection requirements of Chapters 12 through 20 Chapter 25 shall apply when storageracks are equipped with solid shelves and in-rack sprinklers are required per the applicable chapter.


In Sections 24.1.2 and 24.1.3, the references are from the 2016 edition of the NFPA 13. These matters need to be revised to match the new chapter structure for the standard.

Related Item

FR-652




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: In Sections 24.1.2 and 24.1.3, the references are from the 2016 edition of the NFPA 13. Thesematters need to be revised to match the new chapter structure for the standard.


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24.2.1


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Protection of palletized and solid-piled storage of Class I through Class IV and cartoned nonexpandedplastic commodities shall be permitted to be protected in accordance with Table 24.2.1.

Table 24.2.1 Extended Coverage, CMSA [K-factor 25.2 (360)] Sprinkler Design Criteria for Palletized andSolid-Piled Storage of Class I Through Class IV and Cartoned Nonexpanded Plastic Commodities

StorageArrangement

CommodityClass


MaximumCeiling/Roof

Height

K-Factor/

Orientation

Type ofSystem

Numberof Design

Sprinklers


ft m ft m

Palletized andsolid-piled

Class I throughClass IV,encapsulatedandnonencapsulated,and cartonednonexpandedplastics

20 6.1 30 9.1

25.2 (360)Upright/

pendent

Wet 6

30 psi

(2.1 bar)

(

20 6.1 30 9.1

25.2 (360)Upright/

pendent

Wet 6

30 psi

(2.1 bar)

(

25 7.6 30 9.1

25.2 (360)Upright/

pendent

Wet 6

30 psi

(2.1 bar)

(

25 7.6 30 9.1

25.2 (360)Upright/

pendent

Wet 6

30 psi

(2.1 bar)

(

25 7.6 35 11

25.2 (360)Upright/

pendent

Wet 8

40 psi

(2.7 bar)


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StorageArrangement

CommodityClass


MaximumCeiling/Roof

Height

K-Factor/

Orientation

Type ofSystem

Numberof Design

Sprinklers


ft m ft m

(

25 7.6 35 1125.2 (360)

UprightWet 8

40 psi

(2.8 bar)

(

30 9.1 35 11

25.2 (360)Upright/

pendent

Wet 8

40 psi

(2.8 bar)

(

30

30

9.1

9.1

35

35

11

11

25.2 (360)Upright

25.2 (360)

Pendent

Wet

Wet

8

6

40 psi

(2.8 bar)

60 psi

(4.1 bar)

(

(


The proposed change adds criteria for K25.2 EC Pendent sprinklers based on fire testing conducted by FM Global, which forms the basis for criteria included in FM Data Sheet 8-9 Table 3.

Related Item


420 of 518 10/27/2017, 7:12 AM

PI-423




Street Address:

City:

State:

Zip:


Committee Statement


Resolution: Submitter is encouraged to submit test data to support the proposed change.


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24.3.1


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Protection of single-, double-, and multiple-row racks without solid shelves of Class I through Class IV andcartoned nonexpanded plastic commodities shall be permitted to be protected in accordance with Table24.3.1.

Table 24.3.1 Extended Coverage, CMSA [K-Factor 25.2 (360)] Sprinkler Design Criteria for Single-,Double-, and Multiple-Row Racks Without Solid Shelves of Class I Through Class IV and CartonedNonexpanded Plastic Commodities

StorageArrangement

CommodityClass


MaximumCeiling/Roof

Height

K-Factor/

Orientation

Type ofSystem

Numberof Design

Sprinklers


ft m ft m

Single-,double-, andmultiple-rowracks withoutsolid shelves(no open-topcontainers)

Class I throughClass IV,encapsulatedandnonencapsulated,and cartonednonexpandedplastics

20 6.1 30 9.1

25.2 (360)Upright/

pendent

Wet 6

30 psi

(2.1 bar)

(

20 6.1 30 9.1

25.2 (360)Upright/

pendent

Wet 6

30 psi

(2.1 bar)

(

25 7.6 30 9.1

25.2 (360)Upright/

pendent

Wet 6

30 psi

(2.1 bar)

(

25 7.6 30 9.1

25.2 (360)Upright/

pendent

Wet 6

30 psi

(2.1 bar)

(

25 7.6 35 11

25.2 (360)Upright/

Wet 8

40 psi

(2.6 bar)


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StorageArrangement

CommodityClass


MaximumCeiling/Roof

Height

K-Factor/

Orientation

Type ofSystem

Numberof Design

Sprinklers


ft m ft m

pendent

(

25 7.6 35 1125.2 (360)

UprightWet 8

40 psi

(2.6 bar)

(

30 9.1 35 11

25.2 (360)Upright/

pendent

Wet 8

40 psi

(2.7 bar)

(

30

30

9.1

9.1

35

35

11

11

25.2 (360)Upright

25.2 (360)Pendent

Wet

Wet

8

6

40 psi

(2.6 bar)

60 psi

(4.1 bar)

(

(



425 of 518 10/27/2017, 7:12 AM

The proposed change adds criteria for K25.2 EC Pendent sprinklers based on fire testing conducted by FM Global, which forms the basis for criteria included in FM Data Sheet 8-9 Table 8.

Related Item

PI-425




Street Address:

City:

State:

Zip:


Committee Statement


Resolution: Submitter is encouraged to submit test data to support the proposed change.


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24 25 .6 8.3 Alternative In-Rack rack Sprinkler Protection Criteria for Open-Frame Rack Storage ofClass I Through Class IV and Plastic Commodities Option 3 .

24.6.1

Protection of closed-top Class I through Class IV and plastic commodities stored on single-, double-, ormultiple-row racks without solid shelves shall be permitted to be protected in accordance with this section.

24.6.2

In-rack sprinkler systems shall be wet-pipe only.

24.6.3

In-rack sprinklers shall be standard-coverage, quick-response, pendent, and 160ºF (70ºC) nominallyrated.

24.6.3.1

Minimum K-14.0 (K-200) sprinklers shall be installed where the minimum required flow is 100 gpm (380L/min) or less.

24.6.3.2

Minimum K-22.4 (K-320) sprinklers shall be installed where the minimum required flow exceeds 100 gpm(380 L/min).


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24.6.4


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Depending on the type of storage rack being protected, in-rack sprinklers shall be positioned horizontally inaccordance with Figure 24.6.4(a) through Figure 24.6.4(f) and the following:

(1) The minimum horizontal distance between in-rack sprinklers shall be 27 in. (700 mm), with themaximum horizontal distance being 4.5 ft (1.4 m), unless shown otherwise in the applicable figures.

(2) Except as shown in Figure 24.6.4(c), all in-rack sprinklers shall be located within the footprint of therack structure.

(3) All face sprinklers shall be positioned so that the horizontal distance between the face of the storagerack and the outer edge of storage, if it protrudes into the storage aisle, does not exceed 18 in. (450mm).

Figure 24.6.4(a) Plan View of In-Rack Sprinkler Arrangement for Open-Frame Single-Row RacksUp to 3 ft (0.9 m) Deep.

Figure 24.6.4(b) Plan View of In-Rack Sprinkler Arrangement for Open-Frame Single-Row RacksUp to 6 ft (1.8 m) Deep.

Figure 24.6.4(c) Plan View of In-Rack Sprinkler Arrangement for Open-Frame Single-Row RacksUp to 6 ft (1.8 m) Deep Located Against a Wall.

Figure 24.6.4(d) Plan View of In-Rack Sprinkler Arrangement for Open-Frame Double-Row RacksUp to 9 ft (2.7 m) Deep.

Figure 24.6.4(e) Plan View of In-Rack Sprinkler Arrangement for Open-Frame Double-Row RacksUp to 12 ft (3.7 m) Deep.

Figure 24.6.4(f) Plan View of In-Rack Sprinkler Arrangement for Open-Frame Multiple-Row Racks.


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24.6.5

The maximum allowable vertical distance between in-rack sprinklers for cartoned expanded plastics,exposed nonexpanded plastics, and exposed expanded plastics shall be 30 ft (9.1 m).

24.6.5.1

The maximum allowable vertical distance between in-rack sprinklers for Class I through Class IV andcartoned nonexpanded plastics shall be 40 ft (12.2 m).

24.6.5.2

A minimum 6 in. (150 mm) vertical distance between the top of storage and the in-rack sprinkler deflectorshall be maintained.

24.6.6

Regardless of the number of in-rack sprinkler levels installed, the number of sprinkler levels for the in-racksprinkler system design shall be based on the single most hydraulically remote in-rack sprinkler level andthe minimum number of in-rack sprinklers for this level in accordance with Table 24.6.6.

Table 24.6.6 Number of Sprinklers in the In-Rack Sprinkler Design

IRAS Installation Arrangement; Figure

Number of Sprinklers in the In-Rack Design

Class I through IV andCartoned Plastics

ExposedPlastics

Single-row racks uo to 3 ft (0.9 m) Deep; Figure21.6.4(a)

4 4

Single-row racks up to 6 ft (1.8 m) deep; Figures21.6.4(b) and 21.6.4(c)

5 5

Double- and multiple-row racks; Figures 21.6.4(e) and21.6.4(f)

6 6 and 6*

*This represents 6 sprinklers in the most remote rack as well as 6 sprinklers in the nearest adjacent rack.See Figures 21.6.4(d), 21.6.4(e) and 21.6.4(f) to determine which 6 sprinklers to account for in the in-racksprinkler design for double- and multiple-row racks.


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24.6.7

The minimum flow required in the system design shall be from the most remote in-rack sprinkler inaccordance with Table 24.6.7.

Table 24.6.7 Minimum Flow in the In-Rack Sprinkler Design

Maximum Vertical IRASInstallation Increment, ft

(m)Commodity Hazard

Min.K-Factor

Minimum Flow from MostRemote IRAS, gpm (L/min)

30 (9.1)

Class I through IV andcartoned nonexpandedplastic

14.0 (200) 65 (250)

Cartoned expanded plastic 14.0 (200) 100 (380)

Exposed plastic 22.4 (320) 120 (455)

40 (12.2)Class I through IV andcartoned nonexpandedplastic

22.4 (320) 121 (455)

24.6.8

A hose stream allowance of 250 gpm (950 L/min) shall be included as part of the in-rack sprinkler systemdesign obtained from Section 24.6.

24.6.9

The water supply requirements obtained from Section 24.6 shall be available for a minimum of 60 minutes.

24.6.10*

The water supply for the in-rack sprinkler system shall be capable of providing the required in-rack sprinklersystem design obtained from Section 24.6 independent of the design requirements of the ceiling sprinklersystem protecting this same area.

24.6.11

The ceiling sprinkler system shall be designed and installed in accordance with the guidelines outlined inChapters 16 or 17, depending on the commodity hazard, except as modified in Section 24.6 .

24.6.11.1

Where the in-rack sprinkler system is designed and installed in accordance with Section 24.6, the top levelof in-rack sprinklers shall be considered to be a floor for design purposes of the ceiling sprinkler system.

24.6.11.2

As a result, the storage height above the top level of in-rack sprinklers shall be permitted to be in excess of10 ft (3.0 m).

24.6.12*

The water supply for the ceiling system shall be capable of providing the required ceiling sprinkler systemdesign obtained from either Chapter 16 or Chapter 17 independent of the design requirements of the in-rack sprinkler system obtained from Section 24.6 and protecting this same area.


The First Draft has the Alternative In-rack Sprinkler Protection Options in three different chapters, 20, 24, and 25. All of the Alternative In-rack Sprinkler Protection Options should be consolidated to one location in NFPA 13 so that they are easier to located and to avoid confusion about the application of these protection options.

I suggest consolidating the Alternative In-rack Sprinkler Protection Options to Section 25.8, with each option having a subsection. This comment suggests renumbering Section 24.6 to be Section 25.8.3 and renumbering all subsections of 24.6 accordingly.

Related Item

FR-799


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Street Address:

City:

State:

Zip:


Committee Statement


Resolution: See the SR created by the committee to address Chapter 25.


432 of 518 10/27/2017, 7:12 AM


24.6.3

In-rack sprinklers shall be standard-coverage, quick-response, ESFR, pendent, and 160ºF (70ºC)nominally rated.

24.6.3.1

Minimum K-14.0 (K-200) ESFR sprinklers shall be installed where the minimum required flow is 100 gpm(380 L/min) or less.

24.6.3.2

Minimum K-22.4 (K-320) ESFR sprinklers shall be installed where the minimum required flow exceeds 100gpm (380 L/min).


As per the substantiation, this is to be guidance for in-rack sprinkler protection that utilizes ESFR sprinklers. However, nothing in the proposed text references that these in-rack sprinklers must be ESFRs. Since there are K-14.0 storage sprinklers available, which are not ESFR types, mistakes could too easily occur. Therefore, the text needs editing before it can go into the standard.

Related Item

FR-799




Street Address:

City:

State:

Zip:


Committee Statement



Statement: This is redundant text that can be found in Chapter 25, 25.8.3.


433 of 518 10/27/2017, 7:12 AM


25.1.2.1

The in-rack sprinkler arrangements as well as the ceiling and in-rack sprinkler design criteria for rackstorage in this chapter shall be based on open -frame rack configurations as defined in 3.3.141 unlessindicated otherwise.


Editorial. Section 25.1.2 uses the term "open-frame racks", but that is not the term defined in Section 3.3.141. The term defined is "Open Rack". Therefore, the text of 25.1.2 must be revised accordingly.

Related Item

FR-653




Street Address:

City:

State:

Zip:


Committee Statement





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Horizontal

The horizontal spacing of in‐rack sprinklers shall be as follows:

(1) 10 (3.0 m) maximum for Class IV Commodi es

(2) 10 (3.0 m) maximum for Group A Plas c Commodi es

(3) 8 (2.4 m) maximum for rubber res


{The original CI placed this language at 13.3.4.2, it is unclear if this is the best location to relocate that section within the new 25.]

This proposal was offered by the TC to provide better coordination between the in-rack spacing requirements of Chapter 13 with that of Chapters 16 to 18. NFSA supports this proposal. During the previous cycle, when the current text of 13.3.4.2 was entered via PI No. 330 and FR No. 295, the substantiation said that the maximum spacing of 8 ft was prescribed in Chapters 17 and 18. However, Chapter 17 only specifies 8 ft spacing across the width for multiple row racks, whereas for sprinklers in the longitudinal flue spaces, Figure 17.2.1.2.1(b), for storage up to 15 ft in height (beyond the height limitations of Chapter 13) indicates sprinklers ever two storage cubes, which represents a maximum spacing of 10 ft (3.0 m). The Committee Statement to FR No. 295 suggested that guidance for Class I--IV commodities should be included, so this proposal also offers in-rack spacing for Class IV commodities as well. Class I--III is not offered, since as per Table 13.2.1, with an OH2 design criteria in-rack sprinklers would not be needed to storage to 12 ft.

Related Item

CI-929





Street Address:

City:

State:

Zip:


Committee Statement





435 of 518 10/27/2017, 7:12 AM


25.5.1.1.2

For miscellaneous and low piled rack storage, the maximum allowable horizontal spacing of in-racksprinklers shall be as follows:

(1) 10 ft (3.0 m) maximum for Class IV Commodities

(2) 10 ft (3.0 m) maximum for Group A plastic Commodities

(3) 8 ft (2.4 m)

.maximum for rubber tires


During the First Draft Meeting, for PI-514, the Technical Committee, the horizontal spacing for in-rack sprinklers protecting was discussed and it was agreed that since 10 ft spacing was acceptable for Class IV, as per Table 16.2.1.4.2.1(b) and was acceptable for Group A plastics, as per Figure 17.2.1.2.1(b) for example, then it should also serve for Class IV and Group A for miscellaneous storage and low-piled storage applications. The Committee Comment for PI-513 PI-514 discusses this, but a change is not evident in the First Draft Report. Therefore, the revision should be accepted at this stage of the process.

Related Item

PI-513

FR-860

PI-514

CI-929




Street Address:

City:

State:

Zip:


Committee Statement





436 of 518 10/27/2017, 7:12 AM


25.5.2.13

Where miscellaneous and low piled single- and double-row rack storage does not have a longitudinal flue,in-rack sprinklers shall be located within 12 in. (300 mm) of the center of the rack while not exceeding themaximum allowable horizontal in-rack sprinkler spacing.


During the First Draft meeting, the technical Committee resolve PI-512 with the statement that guidance is needed where there is no longitudinal flue. However, there is no such guidance for high-piled storage on single and double row racks, so there is no reason to apply such a severe requirement on the lesser demanding low-piled and miscellaeous storage situations.

This is a very severe requirement, especially for single row racks and should be deleted. There are no parallel requirements in Chapters 16 or 17. In fact in those chapters many of the illustrations, such as Figure 16.3.1.3.1.1(A)(b) and Figure 17.2.1.4(b) show sprinklers between an adjacent wall and a single row rack, rather than within 12 in. of the center of the rack.

The in-rack sprinkler criteria for low-piled storage and miscellaneous storage should not be more demanding than the requirements in for high piled storage.

Related Item

PI-512




Street Address:

City:

State:

Zip:


Committee Statement





437 of 518 10/27/2017, 7:12 AM


25.8.4 Alternative In-Rack Sprinkler Protection Option 4.

25.8.4.1 Class I through Class IV and Group A plastic commodities requiring a greater level of protectionthan is available from the overhead sprinkler system shall be permitted to be protected in accordance withthis section.

25.8.4.1.1 Where the storage rack will not be solely dedicated to the storage of commodities requiring agreater level of protection than is available from the overhead sprinkler system, either of the following shallapply:

(1) Extend the protection prescribed by this section horizontally one pallet load in all directions beyond thecommodity

storage area requiring the higher level of protection.

(2) Install a vertical barrier to segregate the commodities requiring the higher level of protection from anyadjacent

commodities.

25.8.4.1.2 Commodities that can be protected by the ceiling level sprinkler system shall be permitted to bestored vertically above and horizontally adjacent to the portions of the storage rack equipped as prescribedby this section.

25.8.4.2 Horizontal Barriers. Horizontal barriers shall be installed at every tier level of the dedicatedstorage rack where the rack is equipped with solid shelves.

25.8.4.2.1 Where dedicated storage of cartoned Group A plastic commodity is in open-frame racks,horizontal barriers shall be installed at vertical increments not exceeding 30 ft (9.1 m).

25.8.4.2.2 Where dedicated storage of exposed Group A plastic commodity is in open-frame racks,horizontal barriers shall be installed at vertical increments not exceeding 20 ft (6.1 m).

25.8.4.2.3 The barriers shall span horizontally so that all flue spaces within the rack bay are covered.

25.8.4.2.4 A maximum 3 in. (75 mm) wide gap shall be permitted at rack uprights.

25.8.4.2.5 The solid barrier shall be installed on a horizontal plane within a rack, beneath which in-racksprinklers shall be installed, as follows:

(A) The barrier shall be constructed of minimum 22 gauge (0.7 mm) sheet metal or of minimum 3 ⁄ 8in. (10 mm) plywood.

(B) The barrier shall extend to both ends and both aisle faces of the racks covering up both the longitudinaland transverse

flue spaces of the rack bays in which they are installed.

(C) The barrier shall be fitted to within 3 in. (75 mm) of any vertical rack member or other equipment thatwould create an opening, such as vertical in-rack sprinkler pipe drops.

25.8.4.3 In-Rack Sprinklers. Intermediate temperature extended coverage CMDA pendent storagesprinklers with a nominal K-factor of K-25.2 (360) shall be installed beneath each horizontal barrier. Thedeflector of the sprinkler shall be located as close to the underside of the horizontal barrier as possible withthe deflector a minimum of 6 in. (15m) above the top of the commodity.

25.8.4.3.1 Single-Row Racks.

(A) For single-row racks, sprinklers shall be installed at each rack mid-bay as shown in Figure25.8.4.3.1(A) for Class I through Class IV and cartoned Group A plastic commodity and Figure25.8.4.3.1(B) for exposed Group A plastic commodity.


25.8.4.3.2 Double-Row Racks.

(A) For double-row racks, sprinklers shall be installed within the longitudinal flue space at each rack mid-bay as shown in Figure 25.8.4.3.2(A) for Class I through Class IV and cartoned Group A plastic commodityand Figure 25.8.4.3.2(B) for exposed Group A plastic commodity.


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.

25.8.4.3.3 Multiple-Row Racks.

(A) For multiple-row racks with an overall depth between aisles not exceeding 15 ft 6 in. (4.7 m), analternating sprinkler arrangement shall be installed within adjacent transverse flue spaces as shown inFigure 25.8.4.3.3(A) for Class I throught Class IV and cartoned Group A plastic commodity and Figure25.8.4.3.3(B) for exposed Group A plastic commodity.

(B) The maximum linear spacing between sprinklers at the face shall not exceed 10 ft (3.1 m) and shall notexceed 10 ft (3.1 m) between sprinklers at every other bay.

25.8.4.4 The design of an in-rack sprinkler system shall be based on a minimum flow of 138 gpm (520L/min) from the most remote three sprinklers for single-row and double-row racks or the most remote sixsprinklers (two at each face and two in-between) for multiple-row racks.

25.8.4.5 The in-rack sprinkler demand shall not be required to be hydraulically balanced with the ceiling-level sprinkler system.

25.8.4.6 Ceiling Sprinkler System. The ceiling-level sprinkler system shall be designed based on thehighest commodity hazard not protected by the criteria prescribed by this section.



Figures_25_8_4_3.pdf


The Technical Committee on Sprinkler System Discharge Criteria voted to create First Revisions based on PI-427 and PI-453 at the First Draft Meeting. The First Revisions were inadvertently omitted from the First Draft. The proposed Second Revision will add the content of PI-427 and PI-453 to the Second Draft. The proposed Second Revision consolidates the First Revisions proposed by PI-427 and PI-453 to Section 25.8 to be consistent with the new format. The previously submitted figures are attached that have been updated with the new figure numbers and captions.

Two additional changes to the content of the PI-427 and PI-453 are suggested:

1. Revised design criteria to remove the 1.5X safety factor, consistent with CMDA sprinklers.2. Added criteria for min. deflector to commodity distance.

Related Item

PI-427

PI-453

CI-931




Street Address:

City:

State:

Zip:


Committee Statement


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25 20 .8.2 Alternative In-Rack Sprinkler Protection Option 2. 25.8.2. 16 Solid Shelves.

20.16. 1

Where Class I, II, III, IV and Group A plastic commodities are protected in accordance with this section, thein-rack sprinkler system shall not be required to be hydraulically balanced with the ceiling-level sprinklersystem.

25 20 .8 16 .2.2

For open-frame storage racks, install horizontal barriers as outlined in 25.7 as well as in-rack sprinklers amaximum of every 6 ft (1.8 m) vertically.

25 20 .8 16 .2. 3

For storage racks having solid shelves with shelf areas that exceed 20 ft2 (1.9 m2) but not 64 ft2 (5.9 m2)and CMDA sprinklers are installed at ceiling level, in-rack sprinklers shall be installed below shelves atintermediate levels not more than 6 ft (1.8 m) apart vertically.

25 20 .8 16 .2. 4

For storage racks having solid shelves with shelf areas that exceed 20 ft2 (1.9 m2) but not 64 ft2 (5.9 m2)and CMSA or ESFR sprinklers are installed at ceiling level, in-rack sprinklers shall be installed below eachlevel of shelving.

25 20 .8 16 .2. 5

For storage racks having solid shelves with shelf areas that exceed 64 ft2 (5.9 m2), in-rack sprinklers shallbe installed below each level of shelving.

25 20 .8 16 .2. 6

Where CMDA sprinklers are at ceiling level and protecting single- or double-row racks with solid shelves ofClass I through Class IV commodities stored up to and including 25 ft (7.6 m) in height, a minimum 6 in.(150 mm) vertical clear space shall be maintained between in-rack sprinkler deflectors and the top ofstorage located below them.

25 20 .8 16 .2. 7

Where racks contain storage of Class I through Class IV commodities, the maximum allowable horizontalspacing of in-rack sprinklers shall be 10 ft (3.0 m).

25 20 .8 16 .2. 8

Where racks with solid shelves contain storage of plastic commodities, the maximum allowable horizontalspacing of in-rack sprinklers shall be 5 ft (1.5 m).

25 20 .8 16 .2. 9

Face sprinklers shall be installed under each solid shelf or horizontal barrier at rack uprights.

25 20 .8 16 .2. 10 In-Rack Sprinkler System Design.

The in-rack sprinkler design for the in-rack sprinkler arrangement outlined in this section shall be based ona minimum flow of 60 gpm (230 L/min) from the most remote eight in-rack sprinklers.

25 20 .8 16 .2. 11

Where a storage rack will not be solely dedicated to the in-rack sprinkler system outlined in this section,either of the following shall apply:

25 20 .8 16 .2. 11.1

Extend the protection outlined in this section horizontally one pallet load in all directions beyond thecommodity storage area that is being protected by the alternative in-rack sprinkler arrangement.


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25 20 .8 16 .2. 11.2

Install a vertical barrier to segregate the commodities that are being protected by the alternative in-racksprinkler arrangement.

25 20 .8 16 .2. 12

Where a storage rack is partially protected by the in-rack sprinkler system outlined in this section,commodities that can be protected by the ceiling-level sprinkler system shall be permitted to be storedvertically above and horizontally adjacent to the portions of the storage rack protected in accordance withthis section.


This section was label "Solid Shelving" in the 2016 edition of NFPA 13. It has been labeled as an Alternative In-Rack Sprinkler Protection option in the First Draft, which I believe was inadvertent. This is a section on how to address solid shelving that provides additional requirements for in-rack sprinklers when solid shelves are present. This is not an alternative to other in-rack sprinkler systems or protection schemes. I suggest labeling this section Solid Shelving, as it was in the 2016 edition, and moving it to Chapter 20, General Requirements for Storage.

Related Item

FR-653




Street Address:

City:

State:

Zip:


Committee Statement


Resolution: This criteria addresses in-rack protection and belongs in Chapter 25.


442 of 518 10/27/2017, 7:12 AM


27.2.3.1 Waterflow Devices.

Waterflow detecting devices including the associated alarm circuits shall be flow tested through theinspector’s test connection and shall result in an audible alarm on the premises within 5 minutes after suchflow begins and until such flow stops. If a fire alarm sytem is monitoring waterflow, the audible alarm shallsound within 90 seconds of activation, and until such flow stops.


Added information correlates with NFFPA 72-17.12.2 requirement that waterflow signal is to be activated within 90 seconds of waterflow switch activation. Five minute requirement historically may be for water motor gong without fire alarm system.

Related Item

FR-847


Submitter Full Name: Liane Ozmun

Organization: Frankfurt Short Bruza

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Statement: Added information correlates with NFFPA 72-17.12.2 requirement that waterflow signal is to beactivated within 90 seconds of waterflow switch activation. Five minute requirement historicallymay be for water motor gong without fire alarm system.


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27.3 Automated Inspection and Testing Devices and Equipment.

27.3.1

Automated inspection and testing devices and equipment installed on the sprinkler system shall be testedin accordance with the manufacture's instructions to ensure that the desired result of the automatedinspection or test is realized.

27.3.1.1

Automated inspection devices and equipment shall be shown to be as effective as a visual examination.

27.3.1.2

Automated testing devices and equipment shall produce the same action required by this standard to testa device.

27.3.1.2.1

The testing shall discharge water where required by this standard and NFPA 25.

27.3.2

Failure of automated inspection and testing devices and equipment shall not impair the operation of thesystem unless indicated by an audible and visual trouble signal in accordance with NFPA 72 .

27.3.3

Failure of a system or component to pass automated inspection and testing devices and equipment shallresult in an audible and visual trouble signal in accordance with NFPA 72 .

27.3.4

Failure of automated inspection and testing devices and equipment shall result in an audible and visualtrouble signal in accordance with NFPA 72 .


The text for automated inspection and test components does not appear to be acceptance testing criteria. It is just information for selecting those types of products, so the majority of the verbiage should be relocated to Chapter 16. Until more such devices appear on the market, any Systems Acceptance text should just refer to the manufacturer`s instructions for verifying these types of components are installed and function correctly.

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FR-723




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445 of 518 10/27/2017, 7:12 AM


27.4 Circulating Closed Loop Systems.

27.4.1

For sprinkler systems with non–fire protection connections, additional information shall be appended to thecontractor's material and test certificate for aboveground piping shown in Figure 27.1 as follows:

(1) Certification that all auxiliary devices, such as heat pumps, circulating pumps, heat exchangers,radiators, and luminaires, if a part of the system, have a pressure rating of at least 175 psi or 300 psi(12.1 bar or 20.7 bar) if exposed to pressures greater than 175 psi (12.1 bar).

(2) All components of sprinkler system and auxiliary system have been pressure tested as a compositesystem in accordance with 27.2.2 .

(3) Waterflow tests have been conducted and waterflow alarms have operated while auxiliary equipmentis in each of the possible modes of operation.

(4) With auxiliary equipment tested in each possible mode of operation and with no flow from sprinklersor test connection, waterflow alarm signals did not operate.

(5) Excess temperature controls for shutting down the auxiliary system have been properly field tested.

27.4.2

Discharge tests of sprinkler systems with non–fire protection connections shall be conducted using systemtest connections described in 6.8.1.

27.4.3

Pressure gauges shall be installed at critical points and readings shall be taken under various modes ofauxiliary equipment operation.

27.4.4

Waterflow alarm signals shall be responsive to discharge of water through system test pipes while auxiliaryequipment is in each of the possible modes of operation.


During the Technical Committee's First Draft Meeting it was decided to delete the requirements for acceptance testing for circulating closed loop systems, but those provisions are still evident in the new Section 27.4. Since the standard no longer addresses those type of systems, the acceptance test criteria should be deleted.

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FR-655




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446 of 518 10/27/2017, 7:12 AM

CommitteeAction:

Accepted


Statement: During the Technical Committee's First Draft Meeting it was decided to delete the requirements foracceptance testing for circulating closed loop systems, but those provisions are still evident in thenew Section 27.4. Since the standard no longer addresses those type of systems, the acceptancetest criteria should be deleted.


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27.6.3

The sign shall include the following information:

1. Location of the design area or areas

2. The size (area) of or number of sprinklers in the design area

3. Discharge densities over the design area or areas

4. Required flow and residual pressure demand at the base of the riser or fire pump where applicable

5. Occupancy classification or commodity classification and maximum permitted storage height andconfiguration

6. Hose stream allowance included in addition to the sprinkler demand

7. The name of the installing contractor


27.6.3 restores the item requirement list from 25.5.2 in the 2016 edition and adds item 2 which is basicinformation that should be included on the sign.

Related Item

FR-851





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Committee Statement

CommitteeAction:



Statement: 27.6.3 restores the item requirement list from 25.5.2 in the 2016 edition and adds item 2 whichis basic

information that should be included on the sign.


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27.6.3

The sign shall include the followng informaton:

(1) Location of the deign area or areas

(2) Discharge densities over the design area or areas

(3) Required flow and residual pressure demand at the base of the riser

(4) Occupancy classifciation or commodity classification and maxmum permited storage height andconfiguraton

(5) Hose stream allowance included in addition to the sprikler demand

(6) The name of the installing contractor


Part of the provisions for the Hydraulic Design Information Sign have been entered after the requirements for the General Information Sign. The text of 27.7.4 should be relocated to be 27.6.3.

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FR-655




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449 of 518 10/27/2017, 7:12 AM


27.7.4

The sign shall include the following information:

(1) Location of the design area or areas

(2) Discharge densities over the design area or areas

(3) Required flow and residual pressure demand at the base of the riser

(4) Occupancy classification or commodity classification and maximum permitted storage height andconfiguration

(5) Hose stream allowance included in addition to the sprinkler demand

(6) The name of the installing contractor


Part of the provisions for the Hydraulic Design Information Sign have been entered after the requirements for the General Information Sign. The text of 27.7.4 should be relocated to be 27.6.3.

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FR-655




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450 of 518 10/27/2017, 7:12 AM


28.1 General.

28.1.1

In addition to the applicable requirements of this standard, the requirements of Chapter 28 shall applywhere modifications or additions are made to existing systems.

28.1. 1

Where an addition or modifications are made to an existing system, enough of the existing system shall beindicated on the plans to make all conditions clear.

28.1.3

When backflow prevention devices are to be retroactively installed on existing systems, a thoroughhydraulic analysis, including revised hydraulic calculations, new fire flow data, and all necessarymodifications to accommodate the additional friction loss, shall be completed as a part of the installation.

28.1.4

A hydraulically calculated system for a building, or a hydraulically calculated addition to a system in anexisting sprinklered building using the pipe schedule method, shall supersede the rules in this standardgoverning pipe schedules, except that all systems shall continue to be limited by area.

28.1.5

Unless permitted by 28.1.5.1, when modifying existing systems protecting general storage, rack storage,rubber tire storage, roll paper storage, and baled cotton storage, using sprinklers with K?factors K?8.0(115) or less, the requirements of 21.1.3 and 21.1.4 shall not apply.

28.1.5.1

Where applying the requirements of Figure 21.5.1.1(b) and Figure 21.5.1.1(c) utilizing the design criteria of0.6 gpm/ft² per 2000 ft² (24.4 mm/min per 186 m²) to existing storage applications, standard responsespray sprinklers with a K?factor of K?11. 2 (160) or larger that are listed for storage applications shall beused.

28.1.6

For modifications or additions to existing systems equipped with residential sprinklers, the listed dischargecriteria less than 0.1 gpm/ft² (4.1mm/min) shall be permitted to be used.

28.1.7

Torch cutting and welding shall not be permitted as a means of modifying or repairing sprinkler systems.

28.1.3 8

Additives to existing systems intended for control of microbiological or other corrosion shall be listed for usewithin fire sprinkler systems.


Editorial. With the exception of the provisions for pipe schedule systems, as currently proposed in the First Draft Report, the items in Section 28.6 and entitled "System Design" all general requirements that should be brought forward to the beginning of the chapter.

The provisions for pipe schedule systems should be moved to Section 28.4, Revamping of Pipe Schedule Systems.

Related Item

FR-912



451 of 518 10/27/2017, 7:12 AM



Street Address:

City:

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Zip:


Committee Statement

CommitteeAction:



Statement: Editorial. With the exception of the provisions for pipe schedule systems, as currently proposed inthe First Draft Report, the items in Section 28.6 and entitled "System Design" all generalrequirements that should be brought forward to the beginning of the chapter.

The provisions for pipe schedule systems should be moved to Section 28.4, Revamping of PipeSchedule Systems.


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28.2.5

When pipe schedule or hydraulically designed systems are revamped to accommodate added ceilings,sprinkler outlets utilized for new armover or drop nipples shall have hexagonal bushings removed wherepresent.


Editorial. All of the provisions in this chapter relating to pipe schedule systems should be moved to Section 28.4, Revamping of Pipe Schedule Systems, for better clariity / continuity.

Related Item

FR-912




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: Editorial. All of the provisions in this chapter relating to pipe schedule systems should be movedto Section 28.4, Revamping of Pipe Schedule Systems, for better clariity / continuity.


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28.4 Revamping of Pipe Schedule Systems.

28.4.1

The pipe schedule method shall be permitted as follows:

(1) Additions or modifications to existing pipe schedule systems sized according to the pipe schedules ofSection 19.8

(2) Additions or modifications to existing extra hazard pipe schedule systems The pipe schedule methodshall be permitted as follows:

28.4.2

When pipe schedule systems are revamped to accommodate added ceilings , sprinkler outlets utilized fornew armover or drop nipples shall have hexagonal bushings removed when present.

28.4.3

When pipe schedule systems are revamped, a nipple not exceeding 4 in. (100 mm) in length shall bepermitted to be installed in the branch line fitting.

28.4.2 4

All piping other than the nipple permitted in 28.4.1 and 28.4.3 shall be a minimum of 1 in. (25 mm) indiameter in accordance with Figure 28.4.2 4 .

Figure 28.4.2 Nipple 4 Nipple and Reducing Elbow Supplying Sprinkler Below Ceiling.


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28.4.3 5

When it is necessary to pipe two new ceiling sprinklers from an existing outlet in an overhead system, theuse of a nipple not exceeding 4 in. (100 mm) in length and of the same pipe thread size as the existingoutlet shall be permitted in accordance with Figure 28.4.3 5 , provided that a hydraulic calculation verifiesthat the design flow rate will be achieved.

Figure 28.4.3 Sprinklers 5 Sprinklers in Concealed Space and Below Ceiling.

28.4.4 6

Where an armover is attached to connect to a sprinkler, the use of pipe nipples less than 1 in. (25 mm) indiameter shall not be permitted where seismic design is required on the system.


Editorial. All of the provisions in this chapter relating to pipe schedule systems should be moved to Section 28.4, Revamping of Pipe Schedule Systems, for better clariity / continuity.

Related Item

FR-912




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: Editorial. All of the provisions in this chapter relating to pipe schedule systems should be movedto Section 28.4, Revamping of Pipe Schedule Systems, for better clariity / continuity.


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28.6 System Design.

28.6.1

Where an addition or modifications are made to an existing system, enough of the existing system shall beindicated on the plans to make all conditions clear.

28.6.2


(1) For modifications or additions to existing systems equipped with residential sprinklers, the listed

discharge criteria less than 0.1 gpm/ft 2 (4.1 mm/min) shall be permitted to be used.

(2) A hydraulically calculated system for a building, or a hydraulically calculated addition to a system inan existing sprinklered building using the pipe schedule method, shall supersede the rules in thisstandard governing pipe schedules, except that all systems shall continue to be limited by area.

(3) Unless permitted by 28.6.3 , when modifying existing systems protecting general storage, rackstorage, rubber tire storage, roll paper storage, and baled cotton storage, using sprinklers withK-factors K-8.0 (115) or less, the requirements of 12.6.2 and 12.6.3 shall not apply.

28.6.3

Where applying the requirements of Figure 25.9.3.1(a) and Figure 25.9.3.1(b) utilizing the design criteria of

0.6 gpm/ft 2 per 2000 ft 2 (24.4 mm/min per 186 m 2 ) to existing storage applications, standard-responsespray sprinklers with a K-factor of K-11.2 (161) or larger that are listed for storage applications shall beused.

28.6.4

For modifications or additions to existing systems equipped with residential sprinklers, the listed discharge

criteria less than 0.1 gpm/ft 2 (4.1 mm/min) shall be permitted to be used.

28.6.5 Retroactive Installation.

When backflow prevention devices are to be retroactively installed on existing systems, a thoroughhydraulic analysis, including revised hydraulic calculations, new fire flow data, and all necessary systemmodifications to accommodate the additional friction loss, shall be completed as a part of the installation.

28.6.6

A hydraulically calculated system for a building, or a hydraulically calculated addition to a system in anexisting sprinklered building using the pipe schedule method, shall supersede the rules in this standardgoverning pipe schedules, except that all systems shall continue to be limited by area.

28.6.7

Unless permitted by 28.6.3 , when modifying existing systems protecting general storage, rack storage,rubber tire storage, roll paper storage, and baled cotton storage, using sprinklers with K-factors K-8.0 (115)or less, the requirements of 21.1.3 and 21.1.4 shall not apply.


Editorial. With the exception of the provisions for pipe schedule systems, as currently proposed in the First Draft Report, the items in Section 28.6 and entitled "System Design" all general requirements that should be brought forward to the beginning of the chapter.

The provisions for pipe schedule systems should be moved to Section 28.4, Revamping of Pipe Schedule Systems.


456 of 518 10/27/2017, 7:12 AM

Related Item

FR-912




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CommitteeAction:






457 of 518 10/27/2017, 7:12 AM


28.6.2


(1) For modifications or additions to existing systems equipped with residential sprinklers, the listed

discharge criteria less than 0.1 gpm/ft 2 (4.1 mm/min) shall be permitted to be used.

(2) A hydraulically calculated system for a building, or a hydraulically calculated addition to a system inan existing sprinklered building using the pipe schedule method, shall supersede the rules in thisstandard governing pipe schedules, except that all systems shall continue to be limited by area.

(3) Unless permitted by 28.6.3 , when modifying existing systems protecting general storage, rackstorage, rubber tire storage, roll paper storage, and baled cotton storage, using sprinklers withK-factors K-8.0 (115) or less, the requirements of 12.6.2 and 12.6.3 shall not apply.


Editorial In Section 28.6.2, the text starts out to provide guidance for pipe schedule systems, but then in the 3 bullet points it discusses residential sprinklers, hydraulically calculated systems and storage - none of which are allowed to be protected by pipe schedules. Therefore, this section must be deleted and the information from this section needs to be moved to the appropriate places.

Related Item

FR-912




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458 of 518 10/27/2017, 7:12 AM


29.1.3

The following definitions shall be applicable to this chapter (see Section 3.3.120 ) :

(1) A-Class Boundary — A boundary designed to resist the passage of smoke and flame for 1 hourwhen tested in accordance with ASTM E119, Standard Test Methods for Fire Tests of BuildingConstruction and Materials , or ANSI/UL 263, Standard for Fire Tests of Building Construction andMaterials .

(2) B-Class Boundary — A boundary designed to resist the passage of flame for 1 ⁄ 2 hour whentested in accordance with ASTM E119, Standard Test Methods for Fire Tests of BuildingConstruction and Materials , or ANSI/UL 263, Standard for Fire Tests of Building Construction andMaterials .

(3) Central Safety Station — A continuously manned control station from which all of the fire controlequipment is monitored. If this station is not the bridge, direct communication with the bridge must beprovided by means other than the ship's service telephone.

(4)

(5) Heel — The inclination of a ship to one side.

(6) Heel Angle — The angle defined by the intersection of a vertical line through the center of a vesseland a line perpendicular to the surface of the water.

(7) International Shore Connection — A universal connection to the vessel's fire main to which ashoreside fire-fighting water supply can be connected.

(8)

(9)

(10) Marine Water Supply — The supply portion of the sprinkler system from the water pressure tank orthe sea suction of the designated sprinkler system pump up to and including the valve that isolatesthe sprinkler system from these two water sources.

(11) Supervision — A visual and audible alarm signal given at the central safety station to indicate whenthe system is in operation or when a condition that would impair the satisfactory operation of thesystem exists. Supervisory alarms shall give a distinct indication for each individual systemcomponent that is monitored.

(12) Survival Angle — The maximum angle to which a vessel is permitted to heel after the assumeddamage required by stability regulations is imposed.

(13) Type 1 Stair — A fully enclosed stair that serves all levels of a vessel in which persons can beemployed.


The definitions for Marine Systems should be either in Chapter 3 or in Chapter 29 (formerly Chapter 26), but not in both as currently proposed. Providing these definitions twice is redundant.

* Heat-Sensitive Material — A material whose melting point is below 1700°F (925°C).

* Marine System — A sprinkler system installed on a ship, boat, or other floating structure thattakes its supply from the water on which the vessel floats.

* Marine Thermal Barrier — An assembly that is constructed of noncombustible materials and madeintact with the main structure of the vessel, such as shell, structural bulkheads, and decks; meetstherequirements of a B-Class boundary; and is insulated such that, if tested in accordance with ASTME119, Standard Test Methods for Fire Tests of Building Construction and Materials, or ANSI/UL263, Standard for Fire Tests of Building Construction and Materials , for 15 minutes, the averagetemperature of the unexposed side does not rise more than 250°F (139°C) above the originaltemperature, nor does the temperature at any one point, including any joint, rise more than 405°F(225°C) above the original temperature.


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Related Item

FR-826

FR-825




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Committee Statement

CommitteeAction:

Accepted


Statement: The definitions for Marine Systems should be either in Chapter 3 or in Chapter 29 (formerlyChapter 26), but not in both as currently proposed. Providing these definitions twice is redundant.


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Public Comment No. 251-NFPA 13-2017 [ Section No. A.1.7.2.1 ]

A.1.7.2.1

Certain devices and equipment that might be used to perform inspection and testing procedures from adistant location are not subjected to system pressure or are not integral to the system and do not affectsystem performance during a fire event . Automated inspection and testing devices and equipment, such asa digital camera, could be in the riser room or attached to the system externally but are not an integral partof the system. Such A pressure transducer could be used to test system pressure but will not affect thesystem during a fire event. Such devices do not need to be listed.


This additional language better correlates with the text in the body and provides another example of devices that could be used.

Related Item

FR No. 834




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Committee Statement


Resolution: Text is redundant.


461 of 518 10/27/2017, 7:12 AM


A.1.7.2.2

Certain devices and equipment that might be used to monitor system or component status from a distanceare not subjected to system pressure or are not integral to the system and do not affect systemperformance during a fire event . Distance monitoring devices, such as an external thermometer, could beattached to the system externally and therefore are not subjected to system pressure. Such A pressuretransducer could be used to monitor the water supply pressure but will not affect the system during a fireevent. Such devices do not need to be listed.


This additional language correlates with the text in the body and provides another example of a device used for this purpose.




Related Item

FR No. 834




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Resolution: Text is redundant.


462 of 518 10/27/2017, 7:12 AM


A.3.3.206.4 Sprinkler System.

As applied to the definition of a sprinkler system, each system riser serving a portion of a single floor of afacility or where individual floor control valves are used in a multistory building should be considered aseparate sprinkler system. Multiple sprinkler systems can be supplied by a common supply main.


As it is currently entered in the First draft Report, the definitions for a sprinkler system and for the various types of sprinkler system is sandwiched in between the sections for the types of sprinkler by installation orientation and the sprinkler system types. This location is obscure. It is not intuitive to look for the definition of a wet pipe system immediately before the definition of a CMDA sprinkler. The systems (types) should have their section. Therefore it is proposed to move A.3.3.206.4 to A.3.3.207.

Related Item

FR-866




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463 of 518 10/27/2017, 7:12 AM

Public Comment No. 116-NFPA 13-2017 [ Section No. A.3.3.206.4.6 ]

A.3.3.206.4.6 Gridded Sprinkler System.

See Figure A.3.3.206.4.6 .

Figure A.3.3.206.4.6 Gridded System.


As it is currently entered in the First draft Report, the definitions for a sprinkler system and for the various types of sprinkler system is sandwiched in between the sections for the types of sprinkler by installation orientation and the sprinkler system types. This location is obscure. It is not intuitive to look for the definition of a wet pipe system immediately before the definition of a CMDA sprinkler. The systems (types) should have their section. Therefore it is proposed to move A.3.3.206.4.6 to A.3.3.207.5.

Related Item

FR-866




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464 of 518 10/27/2017, 7:12 AM





465 of 518 10/27/2017, 7:12 AM


A.3.3.206.4.7 Looped Sprinkler System.

See Figure A.3.3.206.4.7 .

Figure A.3.3.206.4.7 Looped System.



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FR-866




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466 of 518 10/27/2017, 7:12 AM

CommitteeAction:







467 of 518 10/27/2017, 7:12 AM


A.3.3.206.4.10 Preaction Sprinkler System.

The actuating means of the valve are described in 8.3.2.1 . Actuation of the detection system andsprinklers in the case of double-interlocked systems opens a valve that permits water to flow into thesprinkler piping system and to be discharged from any sprinklers that are open.



Related Item

FR-866




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468 of 518 10/27/2017, 7:12 AM

Public Comment No. 111-NFPA 13-2017 [ New Section after A.3.3.206.5.15 ]

A.3.3.207

See attached file (TerraView would not allow the text to be pasted in):



Annex_text_for_Sprinkler_System_definition.docx Annex text for Sprinkler System definition


As it is currently entered in the First draft Report, the definitions for a sprinkler system and for the various types of sprinkler system is sandwiched in between the sections for the types of sprinkler by installation orientation and the sprinkler system types. This location is obscure. It is not intuitive to look for the definition of a wet pipe system immediately before the definition of a CMDA sprinkler. The systems (types) should have their section. Therefore it is proposed to move A.3.3.206.4 to A.3.3.207

Related Item

FR-866




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CommitteeAction:







469 of 518 10/27/2017, 7:12 AM

A.3.3.207 Sprinkler System. As applied to the definition of a sprinkler system, each system riser serving a portion of a single floor of a facility or where individual floor control valves are used in a multistory building should be considered a separate sprinkler system. Multiple sprinkler systems can be supplied by a common supply main.


A.3.3.20.5

See attahed file (TerraView would not allow the text to be pasted in):



Annex_text_for_Gridded_System_definition.docx Annex text for Gridded System definition



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FR-866




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471 of 518 10/27/2017, 7:12 AM

A.3.3.207.5 Gridded Sprinkler System. See Figure A.3.3.207.5.

Figure A.3.3.207.5 Gridded System


A.3.3.207.6

See attached file (TerraView would not allow the text to be pasted in):



Annex_text_for_Looped_System_definition.docx Annex text for Looped System definition



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FR-866




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473 of 518 10/27/2017, 7:12 AM

A.3.3.207.6 Looped Sprinkler System. See Figure A.3.3.207.6.

Figure A.3.3.207.6 Looped System


A.3.3.207.9

See attached file (TerraView woud not allow the text to be pasted in):



Annex_text_for_Preaction_System_definition.docx Annex text for Preaction System definition



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FR-866




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475 of 518 10/27/2017, 7:12 AM

A.3.3.207.9 Preaction Sprinkler System. The actuating means of the valve are described in 8.3.2.1. Actuation of the detection system and sprinklers in the case of double‐interlocked systems opens a valve that permits water to flow into the sprinkler piping system and to be discharged from any sprinklers that are open.

Public Comment No. 134-NFPA 13-2017 [ Section No. A.5.2.2.2.1.1 ]

A.5.2.2.2.1.1

The purpose of the adjustment is to take into account reasonable daily and seasonal variations in the watersupply, which are easily predicted and tracked by a water utility. It is not the intent to use this section toaccount for unusual conditions such as 100-year droughts or water main breaks. These unusual conditionsare handled through the impairment procedures of NFPA 25 and should not be considered whendetermining the ability of a water supply to meet the demand of a fire protection system under more normalcircumstances.






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FR-751





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Accepted




477 of 518 10/27/2017, 7:12 AM


A.5.2.2.2.1.2

Consider the following example: A waterflow test is conducted at a location where a city water main isgoing to be tapped for a new sprinkler system. During the test, the static pressure is measured at 70 psi(4.8 bar) the residual pressure is measured at 50 psi (3.5 bar) while 1300 gpm (4920 L/min) wasdischarging from a nearby hydrant. The water utility is contacted, and they indicate that a reasonable lowstatic pressure accounting for typical daily and seasonal fluctuations in this area is 55 psi (3.8 bar). Thefollowing equation describes the water supply available for a fire sprinkler system :

[A.5.2.2.2.1.2a

There are two ways to use this formula:

(1) Assume two different values for Q , calculate P , and then draw a graph on log 1.85 paper. Any firesprinkler system demand falling on or below the line on this graph would be acceptable in accordancewith NFPA 13 to work with this water supply. In this case, the two easiest flows to pick for Q wouldbe 0 and 1300 gpm (4920 L/min). Where Q = 0, P is simply 55 psi (3.8 bar). Where Q = 1300gpm (4920 L/min), P = 35 psi (2.4 bar). These two points can be plotted on log 1.85 paper as shownin Figure A.5.2.2.2.1.2 .

(2) Calculate the fire protection system and determine the flow necessary to make the system work. Plugthis flow into the preceding formula to determine the available pressure from the water supply at thatflow. For example, if a sprinkler system connected to this water supply had a demand of 580 gpm(2195 L/min) the available pressure from the water supply would be as follows:

[A.5.2.2.2.1.2

So, as long as the sprinkler system has a pressure demand less than or equal to 50.5 psi (3.5 bar), itwill work with this water supply.

Figure A.5.2.2.2.1.2 Available Water Supply Curve for Example in A.5.2.2.2.1.2.




478 of 518 10/27/2017, 7:12 AM




Related Item

FR-751





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Accepted




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A.8.1.1.2

Pressure gauges installed on both sides of a check valve are necessary for several reasons. They canquickly indicate an abnormal condition such as a closed valve or an inoperable check valve. If the pressureon the downstream system side of a check valve is less than the pressure on the upstream supply side,either the pressure gauges are faulty or the check valve is inoperable. If the pressure on the upstreamsupply side of a check valve is less than the pressure on the downstream system side, the pressure istrapped indicating a higher than normal pressure. This erroneous pressure will then be part of a main draintest. If a pressure gauge is installed only on the downstream side of the check valve a pressure would beindicated but the pressure on the upstream side could be 0.0 psi indicating a severe problem.

Multiple pressure gauges installed at the common supply side of check valves or system riser check valvesinstalled in a manifold arrangement should not be considered necessary since the measured pressure isthe same. A single pressure gauge installed on the common supply side of the check valves or systemriser check valves should be considered sufficient for measuring the common supply pressure.


This comment proposes to make 2 changes to this annex note:1) Upstream has been changed to "supply" side and downstream has been changed to "system" side for clarity. 2) Also language has been added to this annex note regarding pressure gauges located on common supply pipes. Pressure gauges are required on both sides of check valves to detect abnormalities. However, multiple gauges reading the pressure of a common supply pipe would be providing redundant information.




Related Item

PI 616

FR-928




Affilliation: NFSA Engineering And Standards Committee

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:




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Statement: This PC is intended to add floor control valves (section 16.9.11) to this section. There is no reasonto to install a pressure gauge on the supply side of a floor control valve. Multiple gauges readingthe pressure of a common supply pipe such as those on the supply to floor control valves would beproviding redundant information.


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A.8.2.6.4.1

The connection from an air compressor to the dry pipe valve should be of a type recommended by themanufacturer and approved by the authority having jurisdiction, taking into consideration the pressures,temperatures, and vibrations that the connection and adjacent equipment will endure. Flexible hose shouldbe considered suitable when capable of withstanding expected vibration, a maximum pressure of 175 psior greater and a maximum temperature of 150°F or greater.


The air compressor manufacturer will be able to identify appropriate materials for use in connecting the air compressor to the sprinkler system and manufacturers commonly specify flexible hoses .

Related Item

FR-819




Affilliation: NFSA Engineering and Standards Commitee

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: The air compressor manufacturer will be able to identify appropriate materials for use inconnecting the air compressor to the sprinkler system and manufacturers commonly specifyflexible hoses .


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A.9.2.1.12

The allowance to omit sprinklers for fire retardant–treated wood requires a pressure-treated application. Itdoes not apply to coated applications.

A concealed attic space, with no combustible storage, constructed of fire retardant treated wood, with limitedaccess as required by the applicable building code, is considered a concealed space that does not requiresprinkler protection.


The Committee Statement on PI 208 was "Resolved" with the statement: "The body of the standard is clear on this subject". However, this statement is confusing since it could be interpreted as either agreeing that the annex note addition is not needed because an attic space is a concealed space, or disagreeing that the annex note is not needed because an attic space is not a concealed space. Which is it? After the First Revision Meeting, Matt Klaus wrote a piece in the September/October 2016 NFPA Journal, "Attic Questions: Understanding concealed space sprinkler requirements", on page 19, which listed 4 considerations that the AHJ should considered when reviewing an attic space as a concealed space under the permissible sprinklered omissions for concealed spaces in paragraph 8.15.1.2 in the 2016 NFPA 13 (now Section 9.2.1 in the proposed edition): "What are the materials of construction? Can the space be occupied? Are goods stored in the space? What level of access is provided to the space?" My proposed text to the annex note that deals with a concealed space constructed entirely of FRT wood covers all the bases Matt Klaus noted in his Fire Journal article when dealing with an attic. It would help clarify this issue for users of the Code instead of leaving it so ambiguous and subject to nonuniform interpretations by users of the Code. I respectfully urge the Committee to add the proposed annex text to reinforce what Mat Klaus noted in his article and provide reasonable guidance to the code user on this important subject.

Related Item

P.I #208 on Section A.8.15.1.2.11


Submitter Full Name: Marshall Klein

Organization: Marshall A Klein Associates

Street Address:

City:

State:

Zip:


Committee Statement


Resolution: The text of the standard is clear.


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Public Comment No. 208-NFPA 13-2017 [ New Section after A.9.2.1.18 ]

A.9.2.3

Exterior projections include, but are not limited to, exterior roofs, canopies, porte-cocheres, balconies,decks, or similar projections.


When the Annex material on loading dock protection with a dry pendent sprinkler turned to 45° was deleted, the explanatory text with examples of exterior projections was also deleted. This text should be re-inserted

Related Item

FR-742




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:







Changes to existing annex: As stated in L. Keeping's & T. Victor’s negative ballots, the firstsentence of this annex note (Vehicles that are temporarily parked are not considered storage) was


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not intended to be deleted. At first draft meeting the committee agreed only to delete that lastsentence. The first sentence needs to be included in this annex note as without this sentence thereis a conflict - one part of the standard states that sprinklers are not required under drive-in bankwindows or porte-cocheres however another section says where there is storage - sprinklers arerequired. Without the first sentence (vehicles that are temporary parked is not considered storage),cars parked for a short time under porte-cocheres could be considered as storage and sprinklerprotection would be required. This was not the intent of the committee or FR 743.


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A.9.2.3.1

Vehicles that are temporarily parked are not considered storage. Areas located at drive-in bank windows orporte-cocheres at hotels and motels normally do not require sprinklers where there is no occupancy above,where the area is entirely constructed of noncombustible or limited-combustible materials or fire retardant–treated lumber, and where the area is not the only means of egress.


As stated in L. Keeping's & T. Victor’s negative ballots, the first sentence of this annex note (Vehicles that are temporarily parked are not considered storage) was not intended to be deleted. At first draft meeting the committee agreed only to delete that last sentence. The first sentence needs to be included in this annex note as without this sentence there is a conflict - one part of the standard states that sprinklers are not required under drive-in bank windows or porte-cocheres however another section says where there is storage - sprinklers are required. Without the first sentence (vehicles that are temporary parked is not considered storage), cars parked for a short time under porte-cocheres could be considered as storage and sprinkler protection would be required. This was not the intent of the committee or FR 743.

Related Item

FR-743





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:





In contract with the actions recorded in FR-743, according to my notes, at the 1st Draft Meeting, inresponse to PI-470, it was agreed to just revise the Annex text by deleting the last sentence,because it was considered to be a building code issue, so NFPA should not be making suchrecommendations either way. However, in the 1st Draft Report the first sentence has also been lost.Neither the first sentance nor the last was moved to the body of the standard as per FR-743. Withthis, the explanation that cars that are temporarily parked do not need to be considered as storagehas been lost. Without that text there is a conflict. One part of the standard says that sprinklers are


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not required under porte-cocheres and another area says storage (ie. parked cars) needs sprinklerprotection.




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A.9.2.3.1 2

Vehicles that are temporarily parked are not considered storage. Areas located at drive-in bank windows orporte-cocheres at hotels and motels normally do not require sprinklers where there is no occupancy above,where the area is entirely constructed of noncombustible or limited-combustible materials or fire retardant–treated lumber, and where the area is not the only means of egress.


In contract with the actions recorded in FR-743, according to my notes, at the 1st Draft Meeting, in response to PI-470, it was agreed to just revise the Annex text by deleting the last sentence, because it was considered to be a building code issue, so NFPA should not be making such recommendations either way. However, in the 1st Draft Report the first sentence has also been lost. Neither the first sentance nor the last was moved to the body of the standard as per FR-743. With this, the explanation that cars that are temporarily parked do not need to be considered as storage has been lost. Without that text there is a conflict. One part of the standard says that sprinklers are not required under porte-cocheres and another area says storage (ie. parked cars) needs sprinkler protection.

Related Item

FR-743




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:





In contract with the actions recorded in FR-743, according to my notes, at the 1st Draft Meeting, inresponse to PI-470, it was agreed to just revise the Annex text by deleting the last sentence,because it was considered to be a building code issue, so NFPA should not be making suchrecommendations either way. However, in the 1st Draft Report the first sentence has also been lost.Neither the first sentance nor the last was moved to the body of the standard as per FR-743. Withthis, the explanation that cars that are temporarily parked do not need to be considered as storagehas been lost. Without that text there is a conflict. One part of the standard says that sprinklers arenot required under porte-cocheres and another area says storage (ie. parked cars) needs sprinkler


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protection.




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Public Comment No. 92-NFPA 13-2017 [ New Section after A.9.2.5 ]

A.9.2.6

Sprinklers and sprinkler piping is permitted in and is permitted to pass through an electrical room as long asthe piping is not within the “dedicated electrical space” as defined by the NEC.

NFPA 70, 2017 Edition, Section 110.26(E)(1)(a) defines a dedicated electrical space as the space equal tothe width and the depth of the equipment extending from the floor to a height of 6 feet above the equipmentor the structural ceiling, whichever is lower. This section further states that no foreign systems shall beallowed in this zone. So, as long as the sprinkler piping does not run through this dedicated electrical space,it can go in and out of the electric room without issue. NFPA 70, Section 110.26(E)(1)(b) further goes on tosay that foreign systems can be in the area above the dedicated electrical space so long as the electricalequipment is properly protected against leaks or breaks in the foreign system. So the sprinkler piping mayrun above the dedicated electrical space (6 ft above equip), as long as the equipment below is protectedfrom leaks. Additionally, sprinklers and sprinkler piping shall not be located directly within the workingspace for the equipment as defined by NFPA 70. See Figure A.9.2.6



Figure_A9.2.6.1494266221634.pdfNew Figure A.9.2.6 (note this figure is from NFPA 70-2017 Handbook)


There is a common misconception that sprinklers and sprinkler piping is not permitted in electrical rooms or is not permitted to pass through electrical areas. This is untrue. The NEC permits both situations under certain conditions. This annex note attempts to clarify these requirements.

Related Item

FR-744





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: Adopted changes to the 2018 Canadian Electrical Code will permit liquid filled electrical equipmentto be installed within buildings but outside of electrical equipment vaults. Subrule 5 of Rule 26-012will now permit the following:


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26-012 Dielectric liquid-filled equipment — Indoors (see Appendices B and G)

(1) Except as permitted in Subrule (5), dielectric liquid-filled electrical equipment containing morethan 23 L of liquid in one tank, or more than 69 L in a group of tanks, shall be located in an electricalequipment vault.

…

(5) Dielectric liquid-filled equipment located indoors with more than 23 L of liquid in one tank, ormore than 69 L in a group of tanks shall be permitted to be installed in accordance with Subrule (2)provided the following additional conditions are met:

(a) the equipment is protected from mechanical damage either by location or guarding;

(b) the equipment contains a non-propagating liquid having a flash point of 275 °C or higher;

(c) for equipment other than transformers, a means of absorbing gases generated by arcing insidethe case, or a pressure relief device is provided;

(d) for transformers with ratings exceeding 25 kV•A at 25 Hz or exceeding 37.5 kV•A at 60 Hz, ameans of absorbing gases generated by arcing inside the tank, or a pressure relief vent is provided;and

(e) where transformers referred to in item (d) are rated at 15 000 V or more, the service room isaccessible only to authorized persons.

The problem to be resolved is that electrical rooms (not vaults) which were not previously permittedby the CEC to contain liquid filled equipment will now contain K-class equipment (subject to therequirements above). Some electrical AHJs still will not accept sprinklers within electrical roomswhereas the plumbing AHJs still require compliance with NFPA 13. Currently NFPA 13 does notrecognize the differing fire hazards between the different types of liquid dielectrics, and does notpermit this type of 'less-flammable' or 'non-propagating' liquid dielectric fluid within an unsprinkleredelectrical room.

Listed IEC K-Class fluids are required to have a fire point above 300°C and a net heat release ofless than 42 MJ/kg as compared to conventional mineral oil fluids which have a fire point of ~170°C .

Factory Mutual has reviewed failure history of these types of devices and found no examples of fireresulting from fluid release from the device (FMRC J.I. 0003014446, November 2002). FactoryMutual Datasheet 5-4 does not require fire protection for transformers containing approved less-flammable liquids provided that they are located within rooms separated from the remainder of thebuilding with a 1 hour fire separation.

NFPA 70 recognizes less flammable liquids as requiring less fire protection than conventional oilfilled transformers.

New annex: There is a common misconception that sprinklers and sprinkler piping is not permitted inelectrical rooms or is not permitted to pass through electrical areas. This is untrue. The NEC permitsboth situations under certain conditions. This annex note attempts to clarify these requirements.


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Figure A.9.2.6(note this figure is from NFPA 70-2017 Handbook)


A9.3.5.4.2 Reference P.I. #84

Fellow AUT-HBS – T.C. Members,

I authored P.I. No. 84 to eliminate a wording conflict within Chapter 9 text.

A.9.3.5.4.2

(8) A means to Bracing to … - See Attached

By a small margin, this T.C. voted to reject P.I. No. 84 , meaning that this conflict must still be needlesslyresolved by the contractor and AHJ.

The T.C. Resolution conflicts with Chapter 9 tenets and text.

P.I. No. 84 conforms to Chapter 9 text.

Sway bracing is the means to resist seismic force.

See My Attached Comments dated 4-18-17

Mr. Duggan’s no vote is incorrectly promoting hangers as an alternate means to sway braces. Mr.Duggan referenced his prior P.I. Log #488 as substantiation for his analogy.

However, Duggan’s P.I. Log #488 was REJECTED .

See Attached , #488 dated 3-23-2005, page 26 and 27

Therefore, Duggan’s reasoning conflicts with BOTH the conclusion of prior T.C.’s and Chapter 9 tenetsand text.

Please reconsider your vote to reject P.I. No. 84 .

Respectfully,

Kraig Kirschner



_0421080149_001.pdf P.I. #84 Substantiation for T.C. Review


I authored P.I. No. 84 to eliminate a wording conflict within Chapter 9 appendix text.

Related Item

P.I. No. 84


Submitter Full Name: Kraig Kirschner

Organization: AFCON

Street Address:

City:

State:

Zip:


Committee Statement


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CommitteeAction:

Rejected

Resolution: There are a variety of ways to account for the upward vertical motion and a brace is only one ofseveral methods.


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A.9.3.20.1

Sprinkler protection under exterior projections should not be required to spray beyond the support beam onthe exterior edge of the exterior projection as long as the maximum distance from the interior edge ofsupport beam to the exterior edge of the projection does not exceed 4 ft .. An additional line of sprinklerson the exterior edge is not required due to obstruction rules. This is considered a reasonable level ofprotection since sprinklers are located between the structure and the exterior edge. See Figure A.9.3.20.1

See Attached Figure



ext_projection.pdf Figure A.9.3.20.1


This comment is in in support of FR-712 with the addition of a 4 ft maximum distance from the inside edge of the support beam to the outside edge of the exterior projection in order to omit sprinkler coverage beyond the support beam. If this distance exceeds 4 ft, the possibility of significant storage exists and sprinkler coverage should be mandated. To illustrate a figure is included.

Related Item

FR-712





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: This comment is in in support of FR-712 with the addition of a 4 ft maximum distance from theinside edge of the support beam to the outside edge of the exterior projection in order to omitsprinkler coverage beyond the support beam. If this distance exceeds 4 ft, the possibility ofsignificant storage exists and sprinkler coverage should be mandated. To illustrate a figure isincluded.


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A.9.4.2.1

For protection of baled cotton, fire tests and actual fire experience indicate an initial low heat release; thus,sprinklers in the ordinary-temperature range should offer some advantage by opening faster than those ofintermediate- or high-temperature classifications under similar conditions

It is acceptable to install ordinary temperature sprinkler throughout a building, intermediate temperaturesprinklers throughout a building or a mix of ordinary and intermediate temperature sprinkler throughout abuilding .


This comment is intended to clarify that it is acceptable to install intermediate temperature sprinklers in a building even when that sprinkler will not be exposed to ambient temperature in excess of 100F. Additionally it is acceptable to mix ordinary temperature sprinklers with intermediate temperature sprinklers. Although the allowance to allow intermediate temperature sprinklers throughout a building is not new, many AHJ's are only allowing intermediate temperature sprinklers where elevated temperatures are present.

Also a separate comment seeks to move the existing A.9.4.2.1 which deals with Baled cotton to section section A.21.10 which is the baled cotton section




Related Item

PI-68




Affilliation: NFSA Engineering and Standards Committeee

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: This comment is intended to clarify that it is acceptable to install intermediate temperature sprinklersin a building even when that sprinkler will not be exposed to ambient temperature in excess of 100F.Additionally it is acceptable to mix ordinary temperature sprinklers with intermediate temperaturesprinklers. Although the allowance to allow intermediate temperature sprinklers throughout abuilding is not new, many AHJ's are only allowing intermediate temperature sprinklers whereelevated temperatures are present.


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Also a separate comment seeks to move the existing A.9.4.2.1 which deals with Baled cotton tosection section A.21.10 which is the baled cotton section


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A.9.4.2.5

A diffuser in ceiling sheathing labeled by the manufacturer as “horizontal discharge” has directional vanesto move air further along the ceiling, and sprinklers located within the 2 ft 6 in. (750 mm) radius should havean intermediate-temperature rating. See Figure A.9.4.2.5(a) and Figure A.9.4.2.5(b).

Figure A.9.4.2.5(a) Recessed Fireplace.

[see two new drawings attached]

Figure A.9.4.2.5(b) Open Fireplace.

[ see two new drawings attached]



FRONT_Fire_Place_ORDINARY.png Improved drawing to illustrate concept accepted in FR

FRONT_Fire_Place_INTERMEDIATE.png Improved drawing to illustrate concept accepted in FR

OPEN_Fire_Place_ORDINARY.png Improved drawing to illustrate concept accepted in FR


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OPEN_Fire_Place_INTERMEDIATE.png Improved drawing to illustrate concept accepted in FR


Improved drawings have been submitted to illustrate the concept accepted in the First Revision. This should be correlated across NFPA 13R and NFPA 13D.

Related Item

FR-905





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: Improved drawings have been submitted to illustrate the concept accepted in the First Revision.This should be correlated across NFPA 13R and NFPA 13D.


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A.10.2.5.2.2

See Figure A.10.2.5.2.2.

Figure A.10.2.5.2.2 Maximum Distance from Walls.

The above example is shown for a light hazard occupancy. However, the irregular shape room allowancealso applies to ordinary and extra hazard occupancies


The purpose of FR 735 (based upon PI 415) was to indicate that this figure is applicable to all occupancy types even though the figure shows light hazard spacing. The following language (from PI 415) needs to be added: "The above example is shown for a light hazard occupancy. However, the irregular shape room allowance also applies to ordinary and extra hazard occupancies."

Related Item

FR-735

PI-415





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Accepted


Statement: The purpose of FR 735 (based upon PI 415) was to indicate that this figure is applicable to alloccupancy types even though the figure shows light hazard spacing. The following language (fromPI 415) needs to be added: "The above example is shown for a light hazard occupancy. However,the irregular shape room allowance also applies to ordinary and extra hazard occupancies."


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A.10.2.6.1.4.5

See Figure A.10.2.6.1.4.5.

Figure A.10.2.6.1.4.5 Hip Roof Installations.


Add 6'-0" minimum or baffles required between the two sprinklers on opposing slopes.

Related Item

FR-679




Street Address:

City:

State:

Zip:


Committee Statement



Statement: Add 6'-0" minimum or baffles required between the two sprinklers on opposing slopes.


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Type your content here ...

A.14.2.4 Previously ESFR sprinklers could not be used in obstructed combustible construction. Fire testinghas indicated that this restriction is no longer necessary.


This is a change to help explain the change in the standard.



Public Comment No. 82-NFPA 13-2017 [Section No. 14.2.4[Excluding any Sub-Sections]]

Change to help explain the change inthe standard

Related Item



Submitter Full Name: Thomas Noble

Organization: AFSA

Street Address:

City:

State:

Zip:


Committee Statement


Resolution: The annex language is unnecessary and does not provide value, the requirement is clear.


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Public Comment No. 284-NFPA 13-2017 [ Section No. A.15.3.1 ]


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A.15.3.1


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Dry sprinklers must be of sufficient length to avoid freezing of the water-filled pipes due to conduction alongthe barrel. The values of exposed barrel length in Table 15.3.1(a) and Table 15.3.1(b) have been developedusing an assumption of a properly sealed penetration and an assumed maximum wind velocity on theexposed sprinkler of 30 mph (48 km/h). Where higher wind velocity is expected, longer exposed barrellengths will help avoid freezing of the wet piping. The total length of the barrel of the dry sprinkler must belonger than the values shown in Table 15.3.1(a) and Table 15.3.1(b) because the length shown in the tablesis the minimum length of the barrel that needs to be exposed to the warmer ambient temperature in theheated space. See Figure A.15.3.1(a) for an example of where to measure the exposed barrel length for asidewall sprinkler penetrating an exterior wall and Figure A.15.3.1(b) for an example of where to measurethe exposed barrel length for a pendent sprinkler penetrating a ceiling or top of a freezer. There are timeswhen it is acceptable to have the exposed barrel length to be measured within a wall cavity. If the wallcavity is a conditioned space and sufficient ambient temperatures are maintained in the wall cavity, thebarrel within that cavity may be counted as the exposed barrel length. See figure A.15.3.1 (e) for anexample of exposedlength within a wall cavity.

Figure A.15.3.1(a) Dry Sidewall Sprinkler Through Wall.

Figure A.15.3.1(b) Dry Pendent Sprinkler Through Ceiling or Top of Freezer.

Figure A.15.3.1(c) Dry Sidewall Sprinkler Through Wall


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Figure A.15.3.1(d) Dry Pendent Sprinkler Through Ceiling



dry_sprinkler_in_wall_cavity.pdf Dry Sprinkler in wall cavity


There are times when it is acceptable to include the barrel length of a dry sprinkler that is located within a wall cavity as the exposed barrel length (X). As long as the wall cavity is considered as part of the "conditioned space" and sufficient temperatures are maintained within that wall cavity, there is no reason not to include this part of the dry sprinkler barrel as part of the exposed barrel length. This annex note is needed as section 15.3.1 states that "the minimum exposed length shall be measured along the length of the dry sprinkler from the face of the fitting to the inside surface of the insulation, wall or ceiling to the cold space, whichever is closest to the the fitting.". The language "whichever is closest to the fitting" would not allow the area in the wall cavity to be counted even if this was a conditioned area with sufficient temperatures to meet the requirements of this section.

Note if accepted this comment should be correlated with NFPA 13R and NFPA 13D (This comment has not been submitted to these documents as these section are not open)

Related Item

FR-725





Street Address:


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City:

State:

Zip:


Committee Statement


Resolution: Existing text provides adequate guidance.


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A.16.9.8.5

Such means should consist of a tee outlet downstream of the pressure‐reducing valve iden cal in size to the sprinkler

system feed, available for connec on to field tes ng devices, or other method approved by the authority having

jurisdic on.


This text provides one appropriate method to achieve the performance requirement of 16.9.8.5 but arbitrarily excludes others. It should be relocated to the annex as a suggested but not required means of compliance.



Public Comment No. 142-NFPA 13-2017 [Section No.16.9.8.6]

Similar language deleted from body ofstandard

Related Item

FR-659





Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:

Rejected

Resolution: See action on PC#142. Annex language is not necessary, the requirement should stay in thebody of the standard and not in the annex.


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16.10.4

Figure A.16.10.4(a) is an example of an unacceptable arrangement. Because it will not give a true residualreading, it will indicate an exessive pressure drop.

Figure A.16.10.4(b) is an example of an acceptable drain connection for a system riser.

16.10.4.1

Provisions should include vents at the top of the drain risers in buildings more than six stories in height. Anelbow near the top of the drain riser with a horizontal check valve facing in toward the system wolud beone acceptable arrangement. A check valve at the top of the drain riser would allow air into the drain riserand break any vacuum created by a standing column.



Main_Drain_Connections.docx Main Drain Connections


During the rewrite / editing a number of Annex Section A.8.16.2.4 and the corresponding Figure A.8.16.2.4(a) and Figure A.8.16.2.4(b) were deleted, with no substantiation or explanation. The text and the illustrations should be reinstated as Annex Section A.16.10.4, Figure A.16.10.4(a) and Figure A.16.10.4(b). The missing text and illustrations have stood the test of time and provide extremely valuable information / guidance. They should not be lost as part of the editing process.

Additionally, Annex Section A.8.16.2.4.1 was similarly omitted without substantiation and it too should be retained, as Annex Section A.16.10.4.1.

Related Item

FR-644




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: During the rewrite / editing Figure A.8.17.4.1 was deleted, with no substantiation or explanation.The illustration should be reinstated as Annex Section A.16.10.4.6. The missing figure has beenpart of NFPA 13 for a great many years (at least 45 to my knowledge). It has stood the test of timeand provides extremely valuable information / guidance. It should not be lost as part of the editing


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process.


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A.16.10.4.6

See Figure A.16.10.4.6.



Water_Supply_With_Test_Connection.docx Water Supply With Test Connection


During the rewrite / editing Figure A.8.17.4.1 was deleted, with no substantiation or explanation. The illustration should be reinstated as Annex Section A.16.10.4.6. The missing figure has been part of NFPA 13 for a great many years (at least 45 to my knowledge). It has stood the test of time and provides extremely valuable information / guidance. It should not be lost as part of the editing process.

Related Item

FR-644




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeAction:



Statement: During the rewrite / editing Figure A.8.17.4.1 was deleted, with no substantiation or explanation.The illustration should be reinstated as Annex Section A.16.10.4.6. The missing figure has beenpart of NFPA 13 for a great many years (at least 45 to my knowledge). It has stood the test of timeand provides extremely valuable information / guidance. It should not be lost as part of the editingprocess.


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A.16.12.4.4

Figure A.16.12.4.4(a) and Figure A.16.12.4.4(b) depict fire department connetions to the undergoundpiping.



Fire_Department_Connections.docx Fire Department Connections


During the rewrite / editing Annex Section A.8.17.2.4.4 and the corresponding Figure A.8.17.2.4.4(a) and Figure A.8.17.2.4.4(b) were deleted, with no substantiation or explanation. The text and the illustrations should be reinstated as Annex Section A.16.12.4.4, Figure A.16.12.4.4(a) and Figure A.16.12.4.4(b). The missing text and illustrations were added for the 2010 edition of the standard to provide clarity where an FDC is connected to underground piping. They should not be lost as part of the editing process.

Related Item

FR-644




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Committee Statement

CommitteeAction:






511 of 518 10/27/2017, 7:12 AM

Public Comment No. 152-NFPA 13-2017 [ New Section after A.18.4 ]

A.18.4.1

Penetra ons with or without clearance for seismic protec on also need to meet building code requirements for fire

resistance ra ngs as applicable.


Fire resistance ratings need to be considered in addition to seismic performance requirements. Use of annular openings around pipes or rigid pipe passing through an assembly with flexible couplings on either side would still be required to comply with fire resistance rating requirements of the building code.

Related Item

FR-615





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Committee Statement

CommitteeAction:

Accepted


Statement: Fire resistance ratings need to be considered in addition to seismic performance requirements. Useof annular openings around pipes or rigid pipe passing through an assembly with flexible couplingson either side would still be required to comply with fire resistance rating requirements of thebuilding code.


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A.19.3.3.1.1.1

The maximum design area for miscellaneous and low-piled storage is limited to 3000 ft2 (279 m2) whichtruncates the usable portion of Figure 19.3.3.1.1. See Figure A.19.3.3.1.1.1.

[Insert figure from NFPA 13 (2016) Figure 13.2.1]

Figure A.19.3.3.1.1.1 Miscellaneous Storage Up to 12 ft (3.7 m) in Height -- Design Curves



Figure_A-19-3-3-1-1-1.png

Truncated Density/Area table formerly Figure 13.2.1 for Figure A.19.3.3.1.1.1


During the reorganization, Figure 13.2.1 was deleted along with the entirety of Chapter 13. In doing so, the reference to the abbreviated density/area table for Low/Misc and Solid piled storage was reduced to a text exception. This table should be placed in the Annex to clarify the 3000 square foot limit as it applies to miscellaneous and low-piled storage.



Public Comment No. 170-NFPA 13-2017 [New Sectionafter 19.3.3.1.1]

Text subsection limiting D/A table use(proposed location)

Public Comment No. 172-NFPA 13-2017 [Section No.19.3.3.1.2.1]

Text subsection limiting D/A table use (existinglocation)

Related Item

PC-167





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Committee Statement

CommitteeAction:

Accepted


Statement: Former Table 13.2.1 has been added back into the 2019 edition as Table 4.3.1.7.1 in order to makeit easier for the end user to find ceiling only criteria for miscellaneous and low-piled storage


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applications. For in-rack information the user must go to Chapter 25.


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A.21.10

For protection of baled cotton, fire tests and actual

fire experience indicate an initial low heat release; thus, sprinklers

in the ordinary-temperature range should offer some advantage

by opening faster than those of intermediate- or hightemperature

classifications under similar conditions.


This comment proposes to move the the exiting annex not A.9.4.2.1 to the Annex of section 21.10. This note is in reference to Baled Cotton and is more appropriate in this section then in section 9.4.2.1 which deals with temperature rating of sprinklers.



Public Comment No. 98-NFPA 13-2017 [Section No. A.9.4.2.1] original location of this annex note

Related Item

PI-68





Street Address:

City:

State:

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Committee Statement

CommitteeAction:

Accepted


Statement: This comment proposes to move the the exiting annex not A.9.4.2.1 to the Annex of section 21.10.This note is in reference to Baled Cotton and is more appropriate in this section then in section9.4.2.1 which deals with temperature rating of sprinklers.


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Public Comment No. 57-NFPA 13-2017 [ Section No. F.1.2.6 ]

F.1.2.6 ASTM Publications.

ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959.

ASTM A126, Standard Specification for Gray Iron Casting for Valves, Flanges, and Pipe Fittings, 2004,reapproved 2014.

ASTM A135/A135M, Standard Specification for Electric-Resistance-Welded Steel Pipe, 2009, reapproved2014.

ASTM A197/A197M, Standard Specification for Cupola Malleable Iron, 2000, reapproved 2015.

ASTM A307, Standard Specification for Carbon Steel Bolts and Studs and Threaded Rod 60,000 PSITensile Strength, 2014.

ASTM A603, Standard Specification for Zinc-Coated Steel Structural Wire Rope, , reapproved 2014.

ASTM B31, Standards of Pressure Piping, collection with various dates.

ASTM C296/C296M, Standard Specification for Asbestos-Cement Pressure Pipe, 2000, reapproved 2015.

ASTM C635/C635M, Standard Specification for the Manufacture, Performance, and Testing of MetalSuspension Systems of Acoustical Tile and Lay-In Panel Ceilings,2013a.

ASTM C636/C636M, Standard Practice for Installation of Metal Ceiling Suspension Systems for AcousticalTile and Lay-In Panels,2013.

ASTM E8/E8M, Structural Test Method for Tension Testing of Metallic Materials, 2015a.

ASTM E84, Standard Test Method of Surface Burning Characteristics of Building Materials, 2015b 2016 .

ASTM E119, Standard Test Methods for Fire Tests of Building Construction and Materials, 2016 2016a .

ASTM E580/E580M, Standard Practice for Installation of Ceiling Suspension Systems for Acoustical Tileand Lay-in Panels in Areas Subject to Earthquake Ground Motions, 2014.

ASTM F437, Standard Specification for Threaded Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic PipeFittings, Schedule 80, 2015.



ASTM F442/F442M, Standard Specification for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe(SDR-PR), 2013.


date updates




Related Item

public input 11




516 of 518 10/27/2017, 7:12 AM


Street Address:

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Committee Statement

Committee Action: Rejected but see related SR


Statement: date updates


517 of 518 10/27/2017, 7:12 AM

Public Comment No. 216-NFPA 13-2017 [ New Section after F.3 ]

Annex G Press-Connect Fittings used in Fire Sprinkler Applications

(See separate document for proposed text of Annex)



NFPA_13_Public_Comment_Annex_Information_Press_Connect_Viega_Submitted.docx

NFPA 13 Public Comment Proposed Annex G


Currently there is no definition for Press-Connect fittings in NFPA 13. The term Press-Connect Fitting is used in both the IAPMO and ICC codes. The wide use of Mechanical type fittings has created the need to identify fittings such as Press-Connect and provide definitions to prevent confusion between mechanical fitting types and to help identify the correct standards these fittings are typically listed to. The proposed annex provides reference information which will be helpful in distinguishing between Mechanical type fittings and Press-Connect Fittings.

In the first draft review meetings public comments 188 & 190 were resolved because all press-connect systems require listings and thus are not to be listed in the existing tables for standards whose products do not require separate listings.

It was suggested by a few committee members that information on Press-Connect fittings be added instead to the Annex of this code for reference and informational purposes.

Related Item

PI 188

PI 190


Submitter Full Name: Gary Morgan

Organization: Viega LLC

Street Address:

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Committee Statement


Resolution: Not appropriate to add assembly procedure for materials or fittings in this standard.


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Proposed New Annex

Annex G Press‐Connect Fittings used in Fire Sprinkler Applications This annex is not a part of the requirements of this NFPA document but is included for informational purposes only.

This annex is intended to provide basic information and description of press‐connect fittings for metallic

piping systems used in fire sprinkler systems. All press‐connect fitting systems used in fire sprinkler

applications require listing(s) specific to the application. Because press‐connect fittings are not

specifically included in the mandatory sections of this standard the following information will discuss the

press‐connect fitting connection in more detail.

G.1 Definition of Press‐Connect Fittings

The press‐connect fitting is a permanent mechanical connection for joining copper tubing or steel pipe

typically utilizing an elastomeric seal or an elastomeric seal in conjunction with a corrosion resistant

axial biting or grip ring or rings. Fitting connections are generally pressed with an electro‐hydraulic

pressing tool utilizing pressing jaws or pressing rings approved by the fitting manufacturer for use in

accordance with their listing.

G.2 Applications of Press Connect Fittings

Press‐connect fittings are commonly used today in both dry (pre‐action) systems as well as wet systems.

Press‐connect system designs must not exceed the maximum pressure and ambient exposure

temperature ratings for fittings and piping. The maximum continuous exposure temperature is limited

by the elastomeric sealing element material. A manufacturers’ listing will specify the maximum

continuous exposure temperatures for their press‐connect system.

G.3 Standards for Press‐Connect Fittings

Press‐connect systems are generally manufactured in accordance with ASME B16.51, Copper and

Copper Alloy Press‐Connect Pressure Fittings; or IAPMO PS‐117, Press and Nail Connections; or ASTM

F3226/F326M, Standard Specification for Metallic Press‐Connect Fittings for Piping and Tubing Systems

depending on the type of piping. These standards specify the material requirements and the

performance criteria such as, but not limited to, Hydrostatic Pressure Test, Static Torque Test, Bending

Test, Vacuum Test, Pressure Cycle Test, Vibration Test, Thermocycling Test, and Dynamic Torque Test.

G.4 General Assembly Procedure for Press‐Connect Fittings

Press‐connect fittings all have an elastomeric seal that forms the seal‐tight joint. The pipe or tubing is

cut square, deburred and chamfered and, or reamed to restore the full inside diameter. The ends of the

pipe or tube that will be inserted into the fittings should be carefully inspected for any noticeable

damage or deep scratches and also checked and cleaned if any foreign matter such as dirt or tape

residue is present. The pipe or tubing is then fully inserted into the fitting until the internal shoulder

stop is reached and the tubing is then marked with a permanent marker where the tubing meets the

outer shoulder of the fitting in order to establish the full insertion depth. With the tubing fully inserted

and the insertion depth mark double checked, the joint can be pressed using the tool recommended by

the manufacturer. The insertion depth mark should be checked once again after pressing to insure the

joint did not slip apart during the pressing operation. Pressure testing of completed sections should

then be conducted per the manufacturer’s instructions and this code to insure all joints are seal tight.

public comment no. 10-nfpa 13-2017 [ global input ] statement … · 2017-10-27 · public comment...

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