multi-directional bracing forelectrical conduit, cable · pdf file ·...

SYSTEMS THAT MAKE SENSE

SEISMIC RESTRAINTSMulti-Directional Bracing For Electrical Conduit,Cable Tray And Mechanical Piping Systems

INTRODUCTION

What is Seismic Bracing?Seismic forces are exerted on a building and its contents during an earthquake. These forces acthorizontally upon the structure itself, as well as the piping, cable trays, ductwork, and other buildingsystems within. Typical supports for piping, trays, and other equipment are designed for the gravity,or vertical, loads but do not take into account the horizontal loading caused by earthquakes. Seismicrestraints (i.e. braces) resist the horizontal forces and keep the systems in place and secure. The mainpurpose of seismic bracing is safety- to minimize the loss of life due to an earthquake.

Seismic Bracing RequirementsThe rules and requirements for the seismic restraints are published in the model building codes: TheUniform Building Code (Inter national Conference of Building Officials), National Building Code(Building O fficials and Code Administrators), Standard Building Code (Southern Building CodeCongress International), and the International Building Code. Each code is similar in nature, and has achapter on structural forces which defines the level of seismic force that must be used in the design ofseismic restraints.

The amount of seismic force (as determined by the building code) is given as a percent of thecomponents’ weight, or g-force. If the horizontal force is determined to be 50 percent of the pipingweight, for example, the seismic force is .5g.

The seismic "g-value" can vary greatly depending on the nature of the project. Critical buildings in ahigh seismic zone have larger g-value requirements than warehouses in zone 1. Factors that govern the seismic g-values used for design:

• Seismic Zone • Soil Type• Building Type • Distance from known faults• Elevation within building • Anchorage Type• System being braced

The design professional should use these factors and the applicable building code requirements todetermine the proper g-values to be used for the project.

This manual has been developed under the requirements of the 2001 California Building Code,and contains seismic bracing details that can be used for seismic bracing projects up to 1.0g (ASD) or1.4g. The brace spacing charts, required details, and rod loads must be determined for the specificg-value for the project and shall be submitted to the engineer of record prior to construction. Thedetermination of the seismic force level shall also be submitted to the engineer of record and toOSHPD for hospital projects in the state of California prior to construction. However, the seismicforce level need not be submitted to the engineer of record or OSHPD if included in the originalconstruction documents. This brochure contains charts for a variety of g values, however custom chartscan be created to reflect different g-values as required for the project. Contact B-Line Engineering at618-654-2184 with your requirements.

A copy of the complete Seismic Restraints Manual shall be on the jobsite for the duration of theproject. Appropriate shop drawings signed/stamped by the architect or engineer of record must alsobe kept. OSHPD reserves the right to review these upon request.

INTRODUCTION

COOPER B-Line

Raafat S. AboulhosnStructural Engineer S 3913

509 West Monroe StreetHighland, Illinois 62249Phone: 800-851-7415Fax: 618-654-1917

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TABLE OF CONTENTS

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General Information & Notes ................................ 1 - 11

Single Pipe/Conduit Bracing Selection ....... 12 - 16

Trapeze Bracing Selection .................................... 17 - 20

Trapeze Members ........................................................ 21 - 22

Structural Attachment Selection ................................. 23Concrete .......................................................................... 24 - 33Wood ................................................................................. 34 - 37Steel .............................................................................................. 38

Hanger Rod Attachments &Approved Components ....................................................... 39

Concrete .......................................................................... 40 - 46Wood ............................................................................................ 47Steel ................................................................................... 48 - 56

Approved Components Rod Stiffeners ................................................................ 57 - 58Adjustable Hinge .......................................................... 59 - 60Hardware ......................................................................... 61 - 62

Pipe Hangers/Clamps .............................................. 63 - 71

Anchoring Components .......................................... 72 - 78

Metric Conversion Charts .................................. 79Seismic Map ....................................................... 80

Appendix 1Support Spacing Charts ForSingle Pipe/Conduit Applications (.15g, .30g,.45g, .50g, .75g and 1.00g) ................... 82 - 106

Appendix 2Support Spacing Charts ForTrapeze Applications (.15g, .30g, .45g, .50g,.75g and 1.00g) .................................. 108 - 145

Appendix 3Proof Test Instructions For ConcreteAnchors (IR26-6) ........................................... 146

Appendix 4Calculating Your Seismic Force Level .... 147 - 155

Appendix 5 (Beyond the scope of OSHPD)Additional Engineering Approvals ................... 156

B-LINE SEISMIC RESTRAINT SYSTEMS a re designed to resist seismic loading while minimizinginstallation time and providing superior perf o rmance. On the following pages, several methods of seismicbracing are illustrated. The choice of brace design should be governed by the system requirements and locationof supports.

Actual applications may vary and are not strictly limited to the combinations of fittings and supports shown.Any changes to the depicted designs should be in accordance with standard engineering practices and beapproved by OSHPD (California Office of Statewide Health Planning & Development) if necessary.

For additional information on hangers, channels, fittings, and hardware shown, see the latest B-Line StrutSystems Catalog or Pipe Hangers and Supports Catalog.

Seismic restraints are designed to resist the horizontal seismic force in two primary directions: Transverse(perpendicular) and Longitudinal (parallel) to the run. The braces are attached to the building with a structureattachment (for concrete, steel, wood, etc.) of various anchor sizes. Typically, the stronger the structureattachment, the greater the brace spacing allowed.

The following steps detail how to use the brochure:Step 1: Select the bracing details for single pipe hangers or trapeze supports.

Step 2: Obtain required force level (%g) from applicable code for local jurisdiction or from the structural engineer of record.

Example: 2001 California Building CodeAs defined in the 2001 California Building Code, Chapter 16A, Section 1632A, the seismic horizontalforce, Fp, may be calculated using the following formula:

Except that: Fp shall not be less than 0.7 Ca Ip Wp and need not be more than 4 Ca Ip Wp.

Where:

Fp = Seismic Force Level

ap = Amplification Factor (Table 16A-O)

Rp = Component Response Modification Factor (Table 16A-O)= 3.0 for electrical, mechanical and plumbing equipment and associated

conduit, ductwork and piping utilizing deeply embedded anchors. (Table 16A-O)= 1.5 for installations using concrete anchors with an embedment-to-diameter

ratio less than 8.i.e. a 1/2" diameter concrete anchor with an embedment of less than 4" inches.

GENERAL INFORMATION

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Fp = apCaIp (1 + 3 • hx )WpRp hr

Ip = Importance Factor (Table 16A-K)= 1.5 for Essential facilities such as Hospitals, Fire Stations, Police Stations,

Aviation Control Towers, etc. consult Table 16A-K in CBC for a detailed listing.= 1.0 for most other occupancies

Ca = Seismic Coefficient. This is a cumulation of several factors:Zone, Soil Properties, and distance from known fault. (Table 16A-I, Table 16A-J, Table 16A-Q, Table 16A-S, and Table 16A-U)

hx = Element or component attachment elevation with respect to grade. Note: hx shall not be taken less than 0.0

hr = Structure Roof Elevation with respect to grade.

Special Note: This manual is based on allowable stress design (ASD), where as the seismic force level(%g or Fp) for non-structural components provided in building codes are based on strength design. Foruse in this manual, the seismic force levels (Fp) from the building code are converted to allowable stressdesign by dividing the result by 1.4.

Example: If the building code yields, (Fp) = 1.4g, this value is converted to allowable stress design (ASD)as used in this catalog as follows: Fp=1.4g/1.4=1.0 g

Strength Design to Allowable Stress Design Conversions

.21g from building code = .15g (ASD)




1.05g from building code = .75g (ASD)

1.40g from building code = 1.00g (ASD)

Example One, Deeply Embedded Anchors:

Cable tray system is installed on the 1st floor of a 40-foot tall, 2-story surgical center in California. Thecable tray is actually suspended from the bottom of the 2nd floor, which has an elevation of 20 feetabove grade. Location of the surgical center is in seismic zone 4 with a rock soil profile.

ap = 1.0 from Table 16A-O

GENERAL INFORMATION

Fp = apCaIp (1 + 3 • hx )WpRp hr

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GENERAL INFORMATION

Ca = .40Na from Table 16A-Q, which is a combination of Zone and Soil profileZone 4 = .40, from Table 16A-IRock Soil Profile = SB, from Table 16A-JSeismic Source Type = B, for faults other than Type A & C (Table 16A-U)Near Source Factor (Na) = 1.0, for 5 km from known seismic source (Table 16A-S)

Ip = 1.5 from Table 16A-K, Occupancies having surgery and emergency treatment areas.

Rp = 3.0 from Table 16A-O for deep embedded anchors

hx = 20 feet

hr = 40 feet

Check if value falls within limits:

Fp shall not be taken less than, 0.7CaIpWp = 0.7(.40)(1.5)Wp = .42g

Fp shall not be greater than, 4.0CaIpWp = 4.0(.40)(1.5)Wp = 2.4g

2.4g > .5 > 0.42g Therefore allowing the use of 0.50g

To convert this Fp from a strength design to an Allowable Stress Design (ASD) used in this catalogdivide by 1.4.

0.36g is the Allowable Stress Design Seismic Load Factor determined from the 2001 CaliforniaBuilding Code.

Special Note: A table for .36g (ASD) is not available in this catalog. When seismic force levels (%g orFp) falls between catalog table values (i.e.: .15g, .30g, .45g, etc.) the seismic force level shall berounded up to the next highest cataloged force level.

Example: If Fp = .36g (ASD), then use catalog tables for .45g (ASD).

Example Two, Shallow Embedded Anchors:

Special Note: Installations using concrete anchors installed with an embedment length-to-diameterratio of less than 8, also referred to as shallow embedment anchors, have an adjusted ComponentResponse Factor. The adjusted factor Rp = 1.5.

Fp = (1.0)(0.40(1.0))(1.5) (1 + 3 •20 )Wp = 0.50Wp = 0.50g

3.0 40

Fp = 0.50g = 0.36g (ASD)1.4

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GENERAL INFORMATIONCable tray system is installed on the 1st floor of a 40-foot tall, 2-story surgical center in California.The cable tray is actually suspended from the 2nd floor, which has an elevation of 20 feet abovegrade. Location of the surgical center is in seismic zone 4 with a rock soil profile, shallowembedment anchors are used for brace locations.

ap = 1.0 from Table 16A-O

Ca = .40Na from Table 16A-Q, which is a combination of Zone and Soil profileZone 4 = .40 from Table 16A-IRock Soil Profile = SB from Table 16A-JSeismic Source Type = B for faults other than Type A & C (Table 16A-U)Near Source Factor (Na) = 1.0 for 5 km from known seismic source (Table 16A-S)

Ip = 1.5 from Table 16A-K, Occupancies having surgery and emergency treatment areas.

Rp = 1.5 adjusted for Shallow Embedment Anchors

hx = 20 feet

hr = 40 feet

Check if value falls within limits:Fp shall not be taken less than, 0.7CaIpWp = 0.7(.40)(1.5)Wp = .42g

Fp shall not be greater than, 4.0CaIpWp = 4.0(.40)(1.5)Wp = 2.4g

2.4g > 1.0g > 0.42g Therefore allowing the use of 1.0g

To convert this Fp from a strength design to an Allowable Stress Design (ASD) used in this catalogdivide by 1.4.

0.71g is the Allowable Stress Design Seismic Load Factor determined from the 2001 CaliforniaBuilding Code for shallow embedment anchors.

Special Note: A table for .71g (ASD) is not available in this catalog. When seismic force levels (%g orFp) falls between catalog table values (i.e.: .15g, .30g, .45g, etc.) the seismic force level shall berounded up to the next highest cataloged force level.

Example: If Fp = .71g (ASD), then use catalog tables for .75g (ASD).

Note: For other Code examples see Appendix 4

Fp = apCaIp (1 + 3 •hx )Wp

Rp hr

Fp = (1.0)(0.40(1.0))(1.5) (1 + 3 • 20 )Wp = 1.0Wp = 1.0g1.5 40

Fp = 1.0g = 0.71g (ASD)1.4

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Step 3: With required force level (%g), obtain the transverse and longitudinal brace spacing from Appendix 1 (single pipe) or Appendix 2 (trapeze hanger). The following notes shall be followed:

a) B reak the length of pipe into separate straight runs, which are considered to be a single straightsection between any bends in the pipe except where the bend is at an offset of less than themaximum offset length as defined below.

Note: The tabulated values represent pipe and tubing with moment and shear transfering joints.T h e re f o re, for use of these tables pipes shall have welded, brazed, or UL Listed grooved joints. Pipe andtube sizes not listed above or joined as re q i u i red shall be limited to a maximum offset length of 2 ft.

b) Brace each straight run in the transverse direction at both ends. Where several short runs occur,see note e) on the following page.

GENERAL INFORMATION

Nominal Max. Offset Length (ft)PipeSize 0.15g 0.3g 0.5g 0.75g 1.0g

5 4 4 4 4 36 6 6 6 6 58 10 10 10 9 710 10 10 10 10 9

Table 1 - Steel Pipe or Conduit

Nominal Max. Offset Length (ft)TubingSize 0.15g 0.3g 0.5g 0.75g 1.0g

12 4 4 4 4 4

Table 2 - Copper Tubing

Maximum Offset Length (ft.)

Straight Run

Transverse bracing at both ends of the pipe run

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c) Check the required spacing for transverse bracing (Appendixes 1 & 2) and compare it to thelength of the straight run. If the length of the straight run is greater than the allowable distancefor transverse bracing add transverse braces until the spacing does not exceed the allowabletransverse brace distance.

d) Each straight run must have at least one longitudinal brace. Add longitudinal braces so that thespacing does not exceed the allowable longitudinal brace spacing in Appendixes 1 & 2.

Note: A transverse brace may dually act as a longitudinal brace for an adjacent run when it islocated within 24” of the adjacent straight run. However, Appendixes 1 & 2 shall be reviewed touse the stronger of the longitudinal or transverse brace re q u i rements, i.e. anchor and othercomponent sizes.

GENERAL INFORMATION

Additional Transverse Braces

Straight Run

Longitudinal Brace(Transverse brace for

the adjacent run)

Longitudinal Brace (Transverse bracefor the adjacent run)

Longitudinal Brace

24” (610mm) Max.

Straight Run

24” (610mm) Max.

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e) In many cases, several short runs occur one after the other. Based on previous requirements,each straight run requires a longitudinal brace when the adjacent short runs exceed the maximumoffset length (ft.). When the adjacent short runs do not exceed the maximum offset length (ft.) thelongitudinal braces can act as transverse braces as long as the allowable transverse brace spacing(Appendixes 1 & 2) is not exceeded.

In the following layout, transverse braces are used as longitudinal braces when the straight runsare less than the maximum offset length (ft.). When a straight run exceeds the maximum offsetlength (ft.) additional braces are required.

GENERAL INFORMATION

Multiple offsets can be treated as a single run when thetotal offset is less than the maximum offset length (ft.).

Plan or Elevation

First Transverse Brace

Two braces maybe required.

Straight runexceeding the

maximum offsetlength (ft.)

Short run lessthan the maximumoffset length (ft.)

Longitudinalbrace

Longitudinalbrace

Second Transverse Brace

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f) When a flexible connection or swing joint is used, such as at a pipe drop to mechanicalequipment, the pipe may cantilever at a length equal to or less than half the allowable transversebrace spacing (Appendixes 1 & 2). When greater than half the allowable transverse bracespacing, support to the floor is required as shown below.

GENERAL INFORMATION

Allowable Transverse Brace Spacing2

Transverse brace at theend of horizontal runStraight Run

Mechanical equipment.

Requires a flexible connection orswing joint between equipment.

If < 6 ft.Support to Floor

Is Required.

Step 4: Note the structure connection type (brace anchor requirements) from the Appendix, and select the brace anchorage detail to suit (pages 23 thru 38).

Step 5: Note the hanger rod load from the Appendix, and select a rod attachment to structure to suit (pages 39 thru 56).

Step 6: Check if rod stiffeners are required (pages 57 & 58) to prevent the hanger rod from buckling.

Seismic restraints may typically be o m i t t e d for the following conditions whereflexible connectors are provided between components and the associatedductwork, piping, and conduit:

1. Fuel, medical gas, and vacuum piping less than 1 inch (25 mm) inside diameter.

2. All other piping less than 21/2 inches (64 mm) diameter, or:• All piping suspended by individual hangers 12 inches (305 mm) or less in length from the top

of the pipe to the bottom of the structural support for the hanger• All electrical conduit less than 21/2 inches (64 mm) trade size

3. All rectangular air-handling ducts less than 6 ft2 (0.56 m2) in cross sectional area or:• All round air-handling ducts less than 28 inches (711 mm) in diameter• All ducts suspended by hangers 12 inches (305 mm) or less from the top of the duct to the

bottom of the structural support for the hanger; where the hangers are detailed to avoidbending of the hangers and their connections. (To eliminate bending moment, flexibleconnections may be used. See B752 on page 49 or B446 & B446C on page 56)

Where lateral restraints are omitted, the piping, ducts, or conduit shall be installed such that lateralmotion of the piping, duct, or conduit will not cause damaging impact with other systems orstructural members, or loss of vertical support.

NOTE: Reference building code enforced by local authority with jurisdiction for specificrequirements, and verify all omissions or exemptions with structural engineer of record.

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GENERAL NOTES FOR SEISMIC BRACING

A) The seismic restraint assemblies shown in this pre-approval document are designed to resistvertical loading simultaneously with seismic loading (transverse & longitudinal loading). Designrecommendations shown are for single standard weight steel pipes filled with water. Contentsother than water shall be evaluated by the user. Pipes of other approved materials shall besupported in accordance with their approved installation standards. Details not shown in thispre-approval shall be submitted to OSHPD for approval before installation if necessary.

B) This bracing system is limited to the pipe sizes and support details shown. Specialconsideration must be given for pipe material and connections, insulation, thermal movement,vibration, and building seismic joints.

C) Transverse and longitudinal braces shall be no more than 45° above or below the centerline ofthe pipe, duct, or tray.

D) All channel and pipe clamp nuts and bolts shall be tightened to the following torques:1/4"-20 to 6 ft.-lbs. (8 N•m)3/8"-16 to 19 ft.-lbs. (26 N•m)1/2"-13 to 50 ft.-lbs. (68 N•m)5/8"-11 to 65 ft.-lbs. (88 N•m)3/4"-10 to 75 ft.-lbs. (101 N•m)

E) The transverse and longitudinal bracing spacing listed in Appendix 1 & 2 is based on ductilepiping (steel, copper, etc.) with ductile connections (welded, brazed, etc.) and has the followinglimitations:

1) Transverse bracing shall not exceed 40’-0” (12.2 m). Longitudinal bracing shall not exceed 80’-0” (24.4 m).

2) Fuel piping shall have transverse bracing 20'-0" (6.1 m) o.c. maximum and longitudinal bracing 40'-0" (12.2 m) o.c. maximum.

3) Non-ductile piping, and piping with non-ductile connections shall have transversebracing 20'-0" (6.1 m) o.c. maximum and longitudinal bracing 40'-0" (12.2 m) o.c. maximum or 1/2 of the calculated brace spacing indicated in Appendix 1 or 2, whichever is more restrictive.

F) Transverse bracing for one pipe section may also act as longitudinal bracing for the pipesection connected to it, if the bracing is installed within 24 inches (609 mm) of the elbow or teeof similar size. Figures 2 and 4 do not serve as adequate longitudinal braces.


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G) Branch lines of a smaller diameter shall not be used to brace main lines.

H) Where rod stiffeners are required a minimum of two hanger rod stiffener assemblies shall beinstalled. (Part number SC-228 or SC-UB)

I) It is important to check anchorage details against the applicable building code requirements.Seismic design forces may increase substantially when anchors are considered “shallow”(embedded less than 8 times the anchor diameter).

J) When bracing trapeze type hangers, the bracing shall be attached directly to the trapeze hangerassembly and piping secured to the trapeze assembly with pipe straps.

K) A rigid piping system shall not be braced to diff e rent parts of a building that may re s p o n ddifferently during an earthquake. Example: Solid concrete wall and a roof (metal deck filled withlightweight concrete). Special care should be taken to avoid bracing rigid pipe on both sides ofa building seismic joint without allowing for pipe and building movement.

L) The pre-approval document is based on British Units (Inches & Pounds) and values noted inparenthesis (Metric or S.I. Units) are equivalent values. In case of conflicts, British Units will bethe standards for evaluating the proper application of pre-approvals.

M) The designer of the structure shall determine the adequacy of the support structure to carry theload of the piping and equipment. Engineer of record for a site specific project shall verify thatthe structure can support the connection loads of the hanger rod and the bracing attachmentsin addition to all other loads. This pre-approval document is not intended for the seismic designof the piping itself. The dynamic properties of the building structure and piping should beconsidered when selecting the type of piping to be installed.

N) Seismic bracing shall not limit the expansion and contraction of the piping system. Alwaysconsider thermal movements when selecting brace locations and materials. The design forthermal movements is beyond the scope of OSHPD pre-approval.

P) No portion of this pre-approval shall be taken out of context and used in other systems,design or purpose.

Q) On transverse bracing, the pipe insulation material may be part of the brace assembly (i.e) inthe load path. In this case the insulating material shall be capable of withstanding the lateralforces without damage and shall include a pipe shield for hangers or a pipe saddle for rollers.For longitudinal bracing, clamping must be applied directly to the pipe with any insulationbeing installed directly over the hanger and brace assembly. In these applications themechanical engineer of record shall be contacted for insulating recommendations.


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The following B-Line channels may be used as brace members forFigures 1 - 11 using the following structure connection types:

*Slotted channel (SH) versions of all the above types may also be used for brace members.See page 21 for channel details.

**The Structure Connection Type is the brace anchorage requirement.See pages 23 - 38 for brace attachment details.

Note: Do not exceed the maximum brace length or maximum structure connection type for the channels listed.

Commentary:

Appendix 1 & 2 list the allowable structure connection type (I, II, III, IV, or V) for each brace spacing listed. Thestructure connection type limits the amount of axial load (in tension or compression) which is applied to thebrace member. The axial load is listed for each structure connection detail on pages 23 - 38, and is as follows:

Structure Connection Type Maximum Axial Load in Brace Member

I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 lbs. (0.78 kN)II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 lbs. (1.33 kN)III . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450 lbs. (2.00 kN)IV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 675 lbs. (3.00 kN)V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 975 lbs. (4.33 kN)

The B-Line channel brace member must have a capacity greater than the value listed in the above table for themaximum recommended brace length.

B-LINE CHANNEL BRACES

Maximum Maximum Channel Channel MaterialChannel Structure Brace Height Width ThicknessType* Connection LengthType** (m) (mm) (mm) (mm)

B54 IV 4’-10” (1.47) 13/16” (20.6) 1 5/8” (41.3) 14 Ga. (1.9)

B52 IV 4’-8” (1.42) 13/16” (20.6) 1 5/8” (41.3) 12 Ga. (2.6)

B42 V 5’-10” (1.78) 1” (25.4) 1 5/8” (41.3) 12 Ga. (2.6)

B32 V 8’-0” (2.44) 13/8” (34.9) 1 5/8” (41.3) 12 Ga. (2.6)

B24 IV 9’-7” (2.92) 15/8” (41.3) 1 5/8” (41.3) 14 Ga. (1.9)

B22 V 9’-5” (2.74) 15/8” (41.3) 1 5/8” (41.3) 12 Ga. (2.6)

B22A V 10’-10” (3.30) 31/4” (82.5) 1 5/8” (41.3) 12 Ga. (2.6)

B11 IV 11’-7” (3.53) 31/4” ( 82.5) 1 5/8” (41.3) 12 Ga. (2.6)

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Single Rod Hanger Pipe Bracing

1) Layout piping run and determine size and location of piping.

2) Select vertical supports (single rod pipe hangers).

a) Select type of hanger dependent on type of pipe, thermal expansion and contraction, etc.

b) Determine maximum spacing of hanger rods and minimum hanger rod diameter.(Appendix 1)

c) Select hanger rod connection to the structure based on structure type, rod size and hangerrod load from Appendix 1. Refer to section on hanger rod attachment for

details (pages 39 thru 56)

d) Engineer of record for a site specific project shall verify that the structure can supportthe connection loads in addition to all other loads.

3) Select lateral bracing (transverse and longitudinal bracing).

a) Select bracing details (transverse & longitudinal) from Figures 1 thru 8.

b) Determine maximum spacing for transverse and longitudinal braces. (Appendix 1)

c) Determine the type of structure connection required. (Appendix 1)Refer to section on structural attachments for connection details.

d) Determine if rod stiffener is required. (pages 57 & 58)

e) Engineer of record for a site specific project shall verify that the structure can supportthe connection loads.

4) Review the design and revise layout where loads exceed the limitations of the hanger ro d s ,hangers or connection details.

SINGLE PIPE/CONDUIT BRACING

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CLEVIS HANGER TRANSVERSE BRACING (Figure 1) Adjustable PipePipe Size Clevis Hanger Hinge Sleeve

in. (mm) Part No. Part No. Part No.*1/2" (15) B3100-1/2 N/A N/A3/4" (20) B3100-3/4 N/A N/A

1" (25) B3100-1 B335-2-3/8 B3100PS-1

11/4" (32) B3100-11/4 B335-2-3/8 B3100PS-11/4

11/2" (40) B3100-11/2 B335-2-3/8 B3100PS-11/2

2" (50) B3100-2 B335-2-3/8 B3100PS-2

21/2" (65) B3100-21/2 B335-2-3/8 B3100PS-21/2

3" (80) B3100-3 B335-2-3/8 B3100PS-3

31/2" (90) B3100-31/2 B335-2-3/8 B3100PS-31/2

4" (100) B3100-4 B335-2-3/8 B3100PS-4

5" (125) B3100-5 B335-2-1/2 B3100PS-5

6" (150) B3100-6 B335-2-1/2 B3100PS-6

8" (200) B3100-8 B335-2-5/8 B3100PS-8

10" (250) B3100-10 B335-2-3/4 B3100PS-10

12" (300) B3100-12 B335-2-3/4 B3100PS-12

Pipe sleeve required over cross bolt of Clevis Hanger when using the brace connection shown above (Figure 1). Pipe sleeve is not required when clevis hanger is used in conjunction with the bracing shown in Figure 6 - page 15.Refer to Note Q) on page 10 for installations requiring insulated pipe.

Notes:

* Not included when ordering standard B3100 Series Clevis Hanger.

"J" HANGER TRANSVERSE BRACING (Figure 2)

AdjustablePipe Size "J" Hanger Hingein. (mm) Part No. Part No.

1/2" (15) B3690-1/2 N/A3/4" (20) B3690-3/4 N/A

1" (25) B3690-1 B335-2-3/8

11/4" (32) B3690-11/4 B335-2-3/8

11/2" (40) B3690-11/2 B335-2-3/8

2" (50) B3690-2 B335-2-3/8

21/2" (65) B3690-21/2 B335-2-1/2

3" (80) B3690-3 B335-2-1/2

31/2" (90) B3690-31/2 B335-2-1/2

4" (100) B3690-4 B335-2-1/2

5" (125) B3690-5 B335-2-1/2

6" (150) B3690-6 B335-2-1/2

8" (200) B3690-8 B335-2-1/2

B3100 Series Clevis Hanger(See Page 63)

B335-2-Bolt SizeAdjustable Hinge

(See Page 59)

B3100PS Pipe Sleeve

Rod Stiffener(See Pages 57 & 58)

ATRAll Threaded Rod

(See Page 57 forminimum diameter)

B-Line ChannelTransverse Brace

(See page 11)

1 (Min.)

1

B3690 Series'J' Hanger(See Page 64)

ATRAll Threaded Rod


Rod StiffenerMay Be Required(See Pages 57 & 58) 1 Min.

1


(See Page 59)


(See page 11)

Refer to Note Q) on page 10 for installations requiring insulated pipe.Note:

COOPER B-Line509 West Monroe StreetHighland, Illinois 62249Phone: 800-851-7415Fax: 618-654-1917

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Sheet Number:

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SINGLE PIPE BRACING


SINGLE PIPE BRACING

PIPE ROLLER TRANSVERSE BRACING (Figure 4)

AdjustablePipe Size Pipe Roller Hingein. (mm) Part No. Part No.

21/2" (65) B3110-21/2 B335-2-1/2

3" (80) B3110-3 B335-2-1/2

31/2" (90) B3110-21/2 B335-2-1/2

4" (100) B3110-4 B335-2-1/2

5" (125) B3110-5 B335-2-5/8

6" (150) B3110-6 B335-2-3/4

PIPE CLAMP TRANSVERSE BRACING (Figure 3)

AdjustablePipe Size Pipe Clamp * Hingein. (mm) Part No. Part No.

11/2" (40) B3144-11/2 B335-2-1/2

2" (50) B3144-2 B335-2-1/2

21/2" (65) B3144-21/2 B335-2-1/2

3" (80) B3144-3 B335-2-1/2

4" (100) B3144-4 B335-2-5/8

5" (125) B3144-5 B335-2-5/8

6" (150) B3144-6 B335-2-3/4

8" (200) B3144-8 B335-2-3/4

10" (250) B3144-10 B335-2-3/4

12" (300) B3144-12 B335-2-3/4

B3144 SeriesDouble Bolt Pipe Clamp

(See Page 65)


(See Page 59)

ATRAll Threaded Rod

(See Page 57)

Rod StiffenerMay Be Required(See Pages 57 & 58)

B3200 SeriesWeldless Eye Nut

1 (Min.)

1

B3110 SeriesAdjustable Steel Yoke Pipe Roll

(See Page 66)

ATRAll Threaded Rod



1 (Min.)

1


(See Page 59)


(See page 11)


(See page 11)

* See note D) on page 9 for clamp torque values. Refer to Note Q) on page 10 for installations requiring insulated pipe.Note:

Refer to Note Q) on page 10 for installations requiring insulated pipe.Note:

COOPER B-Line



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SINGLE PIPE BRACING

LONGITUDINAL BRACING (Figure 6)

Notes: Install brace within 4" (101mm) of hanger.Refer to Note Q) on page 10 for installations requiring insulated pipe.

TRANSVERSE BRACING (Figure 5)

Channel Nuts & Bolts Not Included (See Pages 61 & 62)

Notes: Install brace within 4" (101mm) of hanger. (Hanger not shown for clarity. See Figure 6 below)Refer to Note Q) on page 10 for installations requiring insulated pipe

B2400 SeriesPipe Strap(See Page 71)

B335V-Bolt SizeAdjustable Half Hinge

(See Page 59)

B3140 Pipe Clampor B3373 Riser Clamp

Series (See Pages 67 & 69)

PipeHanger

orSupport

Rod Stiffener May Be Required(See Pages 63 & 64)

1 (Min.)

1

Pipe Adjustable Riser AdjustablePipe Size Clamp* Half Hinge Clamp * Half Hinge

in. (mm) Part No. Part No. Part No. Part No.

1" (25) B3140-1 B335V-1/2 B3373-1 B335V-1/2

11/4" (32) B3140-11/4 B335V-1/2 B3373-11/4 B335V-1/2

11/2" (40) B3140-11/2 B335V-1/2 B3373-11/2 B335V-1/2

2" (50) B3140-2 B335V-1/2 B3373-2 B335V-1/2

21/2" (65) B3140-21/2 B335V-1/2 B3373-21/2 B335V-1/2

3" (80) B3140-3 B335V-1/2 B3373-3 B335V-1/2

31/2" (90) B3140-31/2 B335V-1/2 B3373-31/2 B335V-1/2

4" (100) B3140-4 B335V-5/8 B3373-4 B335V-1/2

5" (125) B3140-5 B335V-5/8 B3373-5 B335V-1/2

6" (150) B3140-6 B335V-3/4 B3373-6 B335V-1/2

8" (200) B3140-8 B335V-3/4 B3373-8 B335V-5/8

10" (250) -- -- B3373-10 B335V-5/8

12" (300) -- -- B3373-12 B335V-5/8

4” max.(101mm)


(See page 11)

B-Line ChannelLongitudinal Brace

(See page 11)

* See note D) on page 9 for clamp torque values.

3” min.(76mm)

COOPER B-Line



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SINGLE PIPE BRACING - COPPER TUBING

LONGITUDINAL BRACING (Figure 8)

Note: Install brace within 4" (101mm) of hanger.Refer to Note Q) on page 10 for installations requiring insulated pipe.

Copper Riser AdjustableTubing Size Clamp * Half Hingein. (mm) Part No. Part No.

1" (25) B3373CT-1 B335V-1/2

11/4" (32) B3373CT-11/4 B335V-1/2

11/2" (40) B3373CT-11/2 B335V-1/2

2" (50) B3373CT-2 B335V-1/2

21/2" (65) B3373CT-21/2 B335V-1/2

3" (80) B3373CT-3 B335V-1/2

31/2" (90) B3373CT-31/2 B335V-1/2

4" (100) B3373CT-4 B335V-1/2

CLEVIS HANGER TRANSVERSE BRACING (Figure 7)

Copper Adjustable PipeTubing Size Clevis Hanger Hinge Sleeve

in. (mm) Part No. Part No. Part No.*1/2" (15) B3104CT-1/2 N/A N/A3/4" (20) B3104CT-3/4 N/A N/A

1" (25) B3104CT-1 B335-2-3/8 B3104CTPS-1

11/4" (32) B3104CT-11/4 B335-2-3/8 B3104CTPS-11/4

11/2" (40) B3104CT-11/2 B335-2-3/8 B3104CTPS-11/2

2" (50) B3104CT-2 B335-2-3/8 B3104CTPS-2

21/2" (65) B3104CT-21/2 B335-2-3/8 B3104CTPS-21/2

3" (80) B3104CT-3 B335-2-3/8 B3104CTPS-3

31/2" (90) B3104CT-31/2 B335-2-3/8 B3104CTPS-31/2

4" (100) B3104CT-4 B335-2-3/8 B3104CTPS-4

Pipe sleeve required over cross bolt of Clevis Hanger when using the brace connection shown above (Figure 7). Refer to Note Q) on page 10 for installations requiring insulated pipe.

Notes:

* Not included when ordering standard B3104CT Series Clevis Hanger.B3104CT Series Clevis Hanger

(See Page 68)

B335-2-Bolt Size Adjustable Hinge(See Page 59)

B3104CTPS Pipe Sleeve


ATRAll Threaded Rod


1 (Min.)

1

B335V-Bolt SizeAdjustable Half Hinge

(See Page 59)

B3373CTRiser Clamp Series

(See Page 69)

Pipe Hanger or Support

Rod Stiffener May Be Required(See Pages 57 & 58)

4” max.(101mm)


(See page 11)


(See page 11)

* See note D) on page 9 for clamp torque values.

COOPER B-Line



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TRAPEZE BRACING

Trapeze Assembly Bracing

1). Layout piping and/or conduit runs and determine number, size and location of items to be supported bythe trapeze

2). Determine trapeze support spacing (LT). This is usually determined by the maximum support spacing ofthe smallest pipe or conduit on the trapeze.

3). Select trapeze supports.

a). Determine the total vertical load (TL) for each trapeze.

TL = LT x WT

TL = Total vertical load for each trapeze support (lbs.)

LT = Trapeze support spacing (ft.)

WT = Weight of all piping, cable tray, ductwork, conduit, etc. in lbs./ft. supported by the trapeze

b). Determine length of trapeze, making sure sufficient length is added to attach the all threaded rod and bracing attachments. All channel nuts shall be fully engaged within strut.(13/16” (20mm) minimum distance from edge of strut to center line of bolt.)

c). Select type of trapeze member (B22, B22AMIG, etc.) by selecting a member with loading greater than the total load (TL). See Table 4 on page 22 for strut loading data, noting that the trapeze beam span is the distance between the hanger rods. Also determine whether the applied load is uniform or concentrated, and follow notes on page 22 accordingly. Variations in pipe sizes (simular to concentratedload assembly on page 22) shall be treated as a concentrated load, where as same sized pipes evenly distributed across the span (similar to uniform load assembly on page 22) may be treated as a uniform load. Uniform loads on page 22 are converted to a concentrated load by a 50% reduction. Do not exceed the beam span length given by Table 4A on page 22, which limits overloading due to longitudinal seismic force.

d). Determine hanger rod size from Appendix 2 based on total weight (WT) and trapeze support spacing (LT). Rod sizes are given for trapeze supports with braces attached and unbraced trapezes.

e). Select a hanger rod connection to structure (pages 39 thru 56) that is greater than the hanger rod loads listed in Appendix 2.

4). Select transverse and longitudinal bracing.

a). Select bracing detail from Figures 9 - 11.

b). Determine spacing of transverse / longitudinal bracing from Appendix 2 based on total weight (Wt) and the trapeze support span (Lt). Note the corresponding structure attachment type (Roman numeral I - V) for each possible brace interval. When supporting multiple pipe sizes, do not exceed the maximum spacing for the smallest pipe as given in Appendix 1. Verify that the specific forces do not exceed the capacity of the pipe clamps on pages 70 & 71.Take care not to exceed maximum allowable brace beam spans as noted on page 11.Consult Table 4 and Table 4A, page 22, for trapeze design considerations.

c). Determine if rod stiffener is required (pages 57 & 58).

d). Engineer of record for a site specific project shall verify that the structure can support the connection loads in addition to all other loads.

5). Review the design and revise layout where loads exceed the limitations of the hanger rods, strut trapeze supports, or connection details.

COOPER B-Line



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TRAPEZE BRACINGTRAPEZE TRANSVERSE AND LONGITUDINAL BRACING (Figure 9)

B335-2-1/2 Adjustable HingeLongitudinal Brace

(See Page 59)

B335-2-1/2 Adjustable HingeTransverse Brace

(See Page 59)

B-Line Channel - Size as Required(See Page 22 - Table 4 & 4A For

Channel Load Data)

ATRAll Threaded Rod

(See Page 57)


(See Page 59)

B2000 SeriesPipe Straps(See Page 70)See Note 3b

on page 17

Hex Nut &Square Washer

(See Page 62)


B2400Series

Pipe Straps(See Page 71)

1

1 (Min.)

Notes:

1). B335-2 adjustable hinges for longitudinal braces may be attached on either side adjacentto the all thread rod, or attached to the all thread rod itself.

2). B335-2 adjustable hinges for transverse braces may be attached to the all thread rod.

3). Two B335-2 adjustable hinges may be attached to the strut trapeze using the same boltor all thread rod.

4). It is not necessary to install both transverse braces and longitudinal braces on the same trapeze support. Either set of braces may be removed to form a longitudinal brace only or a transversebrace only if desired.

5). Longitudinal braces, when needed, must be installed at both ends of trapeze.

6). The equipment shown on this trapeze support is generic in nature. Any number of pipes, conduits, ductwork or cable tray may be supported following the system weight and support spans listed in Appendix 2 - Table 1.

7). Torque all nuts per Note D, page 9.

8). Refer to note Q, page 10 for installations requiring insulated pipe.


(See page 11)B-Line Channel

Transverse Brace(See page 11)


(See page 11)

COOPER B-Line



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(See Page 59)

B335-2-1/2 Adjustable HingeTransverse Brace

(See Page 59)

B-Line Channel - Size as Required(See - Table 4 & 4A For

Channel Load Data)

ATRAll Threaded Rod

(See Page 57)


(See Page 59)

B2000 Series Pipe Straps(See Page 70)


(See Page 62)


B2400 SeriesPipe Straps(See Page 71)

Cable Tray

1

1 (Min.)

Notes:









See Note 3bon page 17


(See page 11)


(See page 11)


(See page 11)

COOPER B-Line



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(See Page 59)

B-Line Channel -Size as Required

(See Page 22 -Table 4 & 4A For

Channel Load Data)

ATRAll Threaded Rod

(See Page 57)

B2000 SeriesPipe Straps(See Page 70)


(See Page 62)

Rod Stiffener(See Pages 57 & 58) B2400

SeriesPipe Straps(See Page 71)

1

1 (Min.)

Notes:









See Note 3bon page 17


(See page 11)


(See page 11)

COOPER B-Line



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APPROVED COMPONENTS

SECTION PROPERTIES X -X Axis Y - Y Axis

Areas of Moment of Section Radius of Moment of Section Radius ofChannel Weight Section Inertia (I) Modulus (S) Gyration (R) Inertia (I) Modulus (S) Gyration (R)

lbs./ft. kg/m in.2 (cm2) in.4 (cm4) in.3 (cm3) in. (cm) in.4 (cm4) in.3 (cm3) in. (cm)

B54 1.01 (1.51) .299 (1.93) .0263 (1.09) .0560 (0.92) .297 (0.75) .1106 (4.60) .1361 (2.23) .608 (1.55)B52 1.31 (1.95) .386 (2.49) .0320 (1.33) .0673 (1.10) .288 (0.73) .1404 (5.84) .1728 (2.83) .603 (1.53)B42 1.47 (2.18) .432 (2.79) .0554 (2.31) .0968 (1.59) .358 (0.91) .1645 (6.85) .2025 (3.32) .617 (1.57)B32 1.73 (2.58) .510 (3.29) .1252 (5.21) .1626 (2.67) .496 (1.26) .2098 (8.73) .2582 (4.23) .642 (1.63)B24 1.44 (2.15) .424 (2.74) .1494 (6.22) .1670 (2.74) .594 (1.51) .1857 (7.73) .2286 (3.75) .662 (1.68)B22 1.90 (2.83) .559 (3.61) .1850 (7.70) .2042 (3.34) .580 (1.47) .2340 (9.74) .2880 (4.72) .653 (1.66)

B22A 3.80 (5.65) 1.118 (7.21) .9379 (39.04) .5772 (9.46) .924 (2.34) .4681 (19.48) .5761 (9.44) .653 (1.66)

B12 2.47 (3.67) .727 (4.69) .5203 (21.65) .3927 (6.43) .852 (2.16) .3306 (13.76) .4068 (6.66) .679 (1.72)B12A 4.94 (7.35) 1.453 (9.37) 2.8132 (117.09) 1.1541 (18.91) 1.402 (3.56) .6611 (27.52) .8137 (13.33) .679 (1.72)

B11 3.05 (4.54) .897 (5.79) 1.0917 (45.44) .6278 (10.29) 1.112 (2.82) .4271 (17.78) .5256 (8.61) .696 (1.77)B11A 6.10 (9.08) 1.794 (11.59) 6.2139 (258.64) 1.9120 (31.33) 1.876 (4.76) .8542 (35.55) 1.0513 (17.23) .696 (1.77)

Calculations of section properties are based on metal thicknesses as determined by the AISI Cold-Formed Steel Design Manual.For channel loading see page 22.

Notes:Standard Lengths: 10 ft. (3.05 m)

& 20 ft. (6.09 m)

Finishes: Plain, Dura-GreenEpoxy, and Pre-Galvanized

Single Channel

Height DimensionsB_ _SH

9/16" (14mm) x 11/8" (28mm) slots 2" (51mm) on centers.

1" (25mm) from end of channel to center of first slot.

B_ _SHA9/16" (14mm) x 11/8" (28mm) slots 2" (51mm) on centers.1" (25mm) from end of channel to center of first slot. All B12SHA & B11SHA channels are mig welded.

Seismic Approvals: Trapeze Hanger, Longitudinal Brace, Transverse Brace, Threaded Stiffener

Channel ‘H’ ‘Hx”in. (mm) in. (mm)

B54 13/16” (20) 0.3422 (8.7)

B52 13/16” (20) 0.3366 (8.5)B42 1” (25) 0.4226 (10.7)

B32 13/8” (35) 0.6052 (15.4)

B24 15/8” (41) 0.7304 (18.5)B22 15/8” (41) 0.7189 (18.2)

B22A 31/4” (82) 1.6250 (41.3)

B12 27/16” (62) 1.1127 (28.2)B12A 47/8” (124) 2.4375 (61.9)

B11 31/4” (82) 1.5112 (38.4)

B11A 61/2” (165) 3.2500 (82.5)

Table 3

X

Y

13/16"(20mm)

‘Hx’

15/8"(41mm)

‘H’X

Y

15/8"(41mm)

3/8"(9mm)

9/32"(7mm)

‘Hx’

13/16"(20mm)

‘H’

3/8"(9mm)

7/8"(22mm)

Y

XX

Y

“A” Channel

COOPER B-Line509 West Monroe StreetHighland, Illinois 62249Phone: 800-851-7415Fax: 618-654-1917

Date:

6 - 2 - 06

Page No.

21

Sheet Number:

of Raafat S. AboulhosnStructural Engineer S 3913

TRAPEZE BRACINGTypical Trapeze

ATR

B-Line Channel(See below)

Beam Span (BS)

Uniform Load Concentrated Load

Channel Type & Uniform Beam Load Rating

Beam Span B22SH B22 B22A B12 B12A* B11 B11A*(BS)

in. (mm) lbs. (kN) lbs. (kN) lbs. (kN) lbs. (kN) lbs. (kN) lbs. (kN) lbs. (kN)

12" (305) 2553 (11.35) 2837 (12.62) 8165 (36.32) 5498 (24.45) 3259 (14.49) 4395 (19.54) 4309 (19.16)

24" (610) 1276 (5.68) 1418 (6.31) 4083 (18.16) 2750 (12.23) 3259 (14.49) 4395 (19.54) 4309 (19.16)

36" (914) 851 (3.78) 946 (4.21) 2722 (12.11) 1833 (8.15) 3259 (14.49) 2930 (13.03) 4309 (19.16)

48" (1219) 638 (2.84) 709 (3.15) 2042 (9.08) 1374 (6.11) 3259 (14.49) 2197 (9.77) 4309 (19.16)

60" (1524) 511 (2.27) 568 (2.52) 1633 (7.26) 1100 (4.89) 3231 (14.37) 1758 (7.82) 4309 (19.16)

72" (1829) 426 (1.89) 473 (2.10) 1361 (6.05) 916 (4.07) 2693 (11.98) 1465 (6.51) 4309 (19.16)

84" (2133) 365 (1.62) 405 (1.80) 1167 (5.19) 785 (3.49) 2308 (10.26) 1256 (5.58) 3824 (17.01)

96" (2438) 319 (1.42) 354 (1.57) 1021 (4.54) 687 (3.05) 2019 (8.98) 1011 (4.49) 3346 (14.88)

108" (2743) 284 (1.26) 315 (1.40) 908 (4.04) 611 (2.72) 1795 (7.98) 977 (4.34) 2974 (13.23)

120" (3048) 255 (1.13) 283 (1.26) 817 (3.63) 550 (2.44) 1616 (7.19) 879 (3.91) 2677 (11.91)

Table 4

Table 4A

Structure Channel type and maximum beam span forConnection longitudinal beam loading

Type B22SH B22 B22A B12 B12A* B11 B11A*in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm)

I 176 (4470) 196 (4978) 391 (9931) 276 (7010) 552 (14021) 357 (9068) 714 (18135)

II 103 (2616) 114 (2895) 228 (5791) 161 (4089) 322 (8179) 208 (5283) 416 (10566)

III 68 (1727) 76 (1930) 152 (3861) 107 (2718) 215 (5461) 139 (3530) 278 (7061)

IV 46 (1168) 51 (1295) 101 (2565) 72 (1829) 143 (3632) 93 (2362) 185 (4699)

V 32 (813) 35 (889) 70 (1778) 50 (1270) 99 (2514) 64 (1625) 128 (3251)

• Loads shown in chart have a safety factor of 2.• Based on uniformly loaded simple span with adequate lateral bracing using an allowable stress of 21,000 psi (144.7 MPa).• To determine concentrated load capacity at mid-span, multiply the uniform load by 0.5.• Refer to note 3c) on page 17 for uniform and concentrated load requirements.• Use 90% of the solid channel loads for corresponding SH and SHA channels.• Refer to note Q) on page 10 for installations requiring insulated pipe.* These back to back channels are mig welded.

ATR

Beam Span (BS)

COOPER B-Line



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