bs en 806-3-2006 water for human consumption

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

water for human consumption

Part 3: Pipe sizing Simplified method

The European Standard EN 806-3:2006 has the status of a British Standard

ICS 91.140.60Specifications for installations inside buildings conveying BRITISH STANDARD BS EN806-3:2006

BS EN 806-3:2006

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

IThis British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 April 2006

BSI 2006

ISBN 0 580 48283 9

promulgate them in the UK.A list of organizations represented on this subcommittee can be obtained on request to its secretary.

Cross-references

The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled International Standards Correspondence Index, or by using the Search facility of the BSI Electronic Catalogue or of British Standards Online.

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

Compliance with a British Standard does not of itself confer immunity from legal obligations.

Summary of pages

This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 14, an inside back cover and a back cover.

The BSI copyright notice displayed in this document indicates when the document was last issued.

Amendments issued since publication

Amd. No. Date CommentsInternal, which has the responsibility to:

aid enquirers to understand the text;

present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed;

monitor related international and European developments and National foreword

This British Standard is the official English language version of EN 806-3:2006. This part of BS EN 806 partially supersedes BS 6700:1997. On publication of parts 1 to 5 of BS EN 806, BS 6700:1997 will be withdrawn.NOTE EN 806 parts 1 to 5 have been agreed by CEN to be a package with a common Date of Withdrawal for conflicting National Standards (Resolution CEN/BT/20/1993 and CEN/TC 164 Resolution 199 refer).

The UK participation in its preparation was entrusted by Technical Committee B/504, Water supply, to Subcommittee B/504/2, Domestic installation design

EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORM

EN 806-3

April 2006

ICS 91.140.60

English Version

Specifications for installations inside buildings conveying waterfor human consumption - Part 3: Pipe sizing - Simplified method

Spcifications techniques relatives aux installations d'eaudestine la consommation humaine l'intrieur des

btiments - Partie 3: Calculations des diamtres intrieurs -Mthode simplifie

Technische Regeln fr Trinkwasser-Installationen -Berechnung der Rohrinnendurchmesser - Teil 3:

Vereinfachtes Verfahren

This European Standard was approved by CEN on 3 February 2006.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.

CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATIONC O M I T E U R O P E N D E N O R M A LI S A T I O NEUR OP IS C HES KOM ITEE FR NOR M UNG

Management Centre: rue de Stassart, 36 B-1050 Brussels

2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.

Ref. No. EN 806-3:2006: E

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

EN 806-3:2006 (E)

2

Contents

Page

Foreword......................................................................................................................................................................3 1 Scope ..............................................................................................................................................................4 2 Normative references ....................................................................................................................................4 3 Terms, symbols and units ............................................................................................................................4 4 Principles of pipe sizing calculations..........................................................................................................5 5 Simplified method of pipe sizing..................................................................................................................6 6 Special-installations ......................................................................................................................................8 Annex A (informative) Example for the determination of pipe sizes for standard-installations .......................9 Annex B (informative) Design flow rates in relation to total flow rates .............................................................12 Annex C (informative) List of national pipe sizing methods...............................................................................14

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

EN 806-3:2006 (E)

3

Foreword

This European Standard (EN 806-3:2006) has been prepared by Technical Committee CEN/TC 164 Water supply, the secretariat of which is held by AFNOR.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2006, and conflicting national standards shall be withdrawn at the latest by October 2006.

NOTE This is the third part of the European Standard (EN 806) consisting of five parts as follows:

Part 1: General

Part 2: Design

Part 3: Pipe sizing

Part 4: Installation

Part 5: Operation and maintenance

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

EN 806-3:2006 (E)

4

1 Scope

This European Standard is in conjunction with EN 806-1 and EN 806-2 for drinking water systems within premises.

This European Standard describes a calculation method for the dimensioning of pipes for the type of drinking water standard-installations as defined in 4.2.

It contains no pipe sizing for fire fighting systems.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

EN 806-1, Specifications for installations inside buildings conveying water for human consumption Part 1: General

EN 806-2, Specifications for installations inside buildings conveying water for human consumption Part 2: Design

3 Terms, symbols and units

This Clause is enlarged in completion to EN 806-1, to have in the field of pipe sizing the same definitions in European standards.

Table 1 Terms and definitions

Term Symbol Unit Explanation (definition)

Flow-velocity v m/s

Flow-rate, volume flow Q l/s m3/h

Ratio of the volume of water passing through a specified flow cross-section and the time required for this

Minimum flow-rate at draw-off point Qmin l/s Flow-rate at draw-off point which is just sufficient for the appliance to function

Draw-off flow-rate QA l/s Assumed draw-off flow-rate at appliance for calculation purposes

Total flow-rate QT l/s QA, sum of all draw-off flow-rates of the water appliances supplied

Design flow-rate QD l/s Flow-rate for hydraulic calculations, taking into consideration the probable simultaneous demand

Static pressure pR Pa Gauge pressure at a measuring point in the water supply system when no water flowing

Flow pressure pFl Pa Gauge pressure at a measuring point in the water supply system when water flowing

Minimum flow pressure pminFl Pa Gauge pressure required at the connection to a draw-off point at its draw-off flow-rate

Pressure difference, head loss p Pa Difference in pressure between two points in the drinking water installation, resulting from wall friction and individual head loss

(To be continued)

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

EN 806-3:2006 (E)

5

Table 1 (concluded)

Term Symbol Unit Explanation (definition)

Head loss as a consequence of difference in elevation

pe Pa -

Pipe length I m -

Internal diameter of pipe di mm -

External diameter of pipe da mm -

Wall thickness of pipe s mm -

Loading unit LU 1 Factor taking into account the flow-rate required at an appliance, the length of time the appliance is in use and the frequency of use. One loading unit (1 LU) equalises a draw-off flow rate QA of 0,1 l/s.

4 Principles of pipe sizing calculations

4.1 General

Pipe sizing takes into consideration the character of the installation, the pressure conditions and the flow velocities. This part includes the underground pipes within the premises.

4.2 Characters of installations

In a building there are standard-installations and special-installations.

An installation can be called a standard-installation, when:

the draw off flow rates do not exceed those set out in Table 2;

the kind of demand does not exceed the design flow-rate as shown in Figure B.1 (see Annex B);

it is not designed for continuous use of water. Continuous use being defined as use lasting more than 15 min.

Other installations are called special-installations.

4.3 Pressure conditions

Static pressure at draw off point max. 500 kPa (Exception: garden/garage taps max. 1 000 kPa);

Flow pressure at draw off point min. 100 kPa.

Several draw off points, e.g. thermostatic mixing valves, need a higher flow pressure. Calculations have to consider this matter.

The difference between the static pressure at the lowest draw off point and the flow pressure at the hydraulic worst-case draw off point, reduced by the pressure losses (resulting from wall frictions and individual head losses), give the possible head of difference in elevation within a pressure section.

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

EN 806-3:2006 (E)

6

4.4 Maximum flow velocities

The figures given in Table 3 are based on the following flow velocities:

header pipes, rising pipes, floor service pipes max. 2,0 m/s;

connection pipes to one fitting (dead legs) max. 4,0 m/s.

NOTE National regulations may require lower flow velocities to avoid water hammer and noise.

5 Simplified method of pipe sizing

5.1 General

This clause shows a possibility for a simplified pipe sizing for standard-installations. This method can be used for all type of buildings, which do not have measurements, which highly exceed the average. That means that in most of the buildings the simplified method can be applied.

This method is equally used for cold and for hot water pipes.

5.2 Detailed calculations

The designer is free to use a nationally approved detailed calculation method for pipe sizing (see Annex C).

5.3 Hot water return pipes

As hot water return pipes have to fulfil other hydraulic requirements, they cannot be sized with this method. The flow-velocity in the hot water return pipes shall be calculated according to national or manufacturers recommendation.

5.4 Loading unit

1 loading unit (LU) is equivalent to a draw-off flow rate QA of 0,1 l/s.

Table 2 Draw-off flow-rates QA , minimum flow-rates at draw-off points Qmin and loading units for draw-off points

QA Qmin Draw-off point

l/s l/s

Loading units

Washbasin, handbasin, bidet, WC-cistern

0,1 0,1 1

Domestic kitchen sink, -washing machine a, dish washing machine, sink, shower head

0,2 0,15 2

Urinal flush valve 0,3 0,15 3

Bath domestic 0,4 0,3 4

Taps /garden/garage) 0,5 0,4 5

Non domestic kitchen sink DN 20, bath non domestic

0,8 0,8 8

Flush valve DN 20 1,5 1,0 15 a For non domestic appliances check with manufacturer.

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

EN 806-3:2006 (E)

7

The values in this Table do not correspond with the values in product norms. They are only used for pipe sizing.

5.5 Application of the simplified method

Beginning at the last draw-off point, the loading units for each section of the installation have to be determined. The loading units must be added. The probability of simultaneous demand has been taken into consideration in Tables 3.1 to 3.8. Depending on the material chosen by the designer the pipe size can now be taken out of Tables 3.1 to 3.8. The design flow-rate QD as given in Figure B.1 is taken into account for the values in Tables 3.1 to 3.8.

Table 3 Loading units for determination of pipe diameters

Table 3.1 Hot-dip galvanised steel

Max. load LU 6 16 40 160 300 600 1 600

Highest value LU 4 15

DN 15 20 25 32 40 50 65

di mm 16 21,6 27,2 35,9 41,8 53 68,8

Max length of pipe

m 10 6

Table 3.2 Copper

Max. load LU 1 2 3 3 4 6 10 20 50 165 430 1 050 2 100

Highest value LU 2 4 5 8

da x s mm 12 x 1,0 15 x 1,0 18 x 1,0 22 x 1,0 28 x 1,5 35 x 1,5 42 x 1,5 54 x 2 76,1 x 2

di mm 10,0 13,0 16,0 20,0 25 32 39 50 72,1

Max length of pipe

m 20 7 5 15 9 7

Table 3.3 Stainless steel

Max. load LU 3 4 6 10 20 50 165 430 1 050 2 100

Highest value LU 4 5 8

da x s mm 15 x 1,0 18 x 1,0 22 x 1,0 28 x 1,2 35 x 1,5 42 x 1,5 54 x 1,5 76,1 x 2

di mm 13,0 16,0 19,6 25,6 32 39 51 72,1

Max length of pipe m 15 9 7

Table 3.4 PE-X

Max. load LU 1 2 3 4 5 8 16 35 100 350 700


da x s mm 12 x 1,7 16 x 2,2 20 x 2,8 25 x 3,5 32 x 4,4 40 x 5,5 50 x 6,9 63 x 8,6

di mm 8,4 11,6 14,4 18,0 23,2 29 36,2 45,6

Max length of pipe m 13 4 9 5 4

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

EN 806-3:2006 (E)

8

Table 3 (concluded)

Table 3.5 PB

Max. load LU 1 2 3 3 4 6 13 25 55 180 500 1 100


da x s mm 12 x 1,3 16 x 1,5 20 x 1,9 25 x 2,3 32 x 3 40 x 3,7 50 x 4,6 63 x 5,8

di mm 9,4 13,0 16,2 20,4 26 32,6 40,8 51,4

Max length of pipe m 20 7 5 15 9 7

Table 3.6 PP

Max. load LU 1 2 3 3 4 6 13 30 70 200 540 970


da x s mm 16 x 2,7 20 x 3,4 25 x 4,2 32 x 5,4 40 x 6,7 50 x 8,4 63 x 10,5 75 x 12,5

di mm 10,6 13,2 16,6 21,2 26,6 33,2 42 50

Max length of pipe m 20 12 8 15 9 7

Table 3.7 PVC-C

Max. load LU 3 4 5 10 20 45 160 420 900


da x s mm 16 x 2,0 20 x 2,3 25 x 2,8 32 x 3,6 40 x 4,5 50 x 5,6 63 x 6,9

di mm 12,0 15,4 19,4 24,8 31 38,8 49,2


Table 3.8 PEX/AL/PE-HD resp. PE-MD/AL/PE-HD

Max. load LU 3 4 5 6 10 20 55 180 540 1 300


da x s mm 16 x 2,25/16 x 2,0 18 x 2 20 x 2,5 26 x 3 32 x 3 40 x 3,5 50 x 4 63 x 4,5

di mm 11,5/12,0 14 15 20 26 33 42 54


For materials not mentioned in the tables, the table with the most similar material and in this table the column with the most similar or equal diameter shall be chosen.

6 Special-installations

Special-installations are installations, which do not fulfil the conditions for standard-installations or if the building has measurements, which highly exceed the average.

There are installations, where only parts of the project shall be called special-installations. In these cases the parts which fulfil the conditions for standard-installations can be sized with the simplified method.

Pipes for special-installations shall be sized by nationally approved detailed calculations (see Annex C).

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

EN 806-3:2006 (E)

9

Annex A (informative)

Example for the determination of pipe sizes for standard-installations

Figure A.1 Example for standard-installation

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

EN 806-3:2006 (E)

10

Appliance

Beginning at the end of the pipe the loading units must be added. Resulting from this calculation the size of that part of the pipe can be determined.

Task according to the drawing

The cold water pipe from the under ground floor to the draw-off points has to be sized.

The pipe shall be in hot-dip galvanised steel.

In every apartment the following draw-off points will be installed:

1 domestic bath

1 WC-cistern

1 washbasin

1 domestic kitchen sink

There are five equal apartments.

Result

Find the loading units from Table 2:

1 domestic bath 4 LU

1 WC-cistern 1 LU

1 washbasin 1 LU

1 domestic kitchen sink 2 LU

Part 1

connected is 1 domestic kitchen sink = 2 LU

Table 3.1 demands for 2 LU = DN 15

Part 2

connected are 1 domestic kitchen sink = 2 LU

1 domestic bath = 4 LU

total = 6 LU


Part 3



1 washbasin = 1 LU

total = 7 LU

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

EN 806-3:2006 (E)

11


Part 4



1 washbasin = 1 LU

1 WC-cistern = 1 LU

total per apartment = 8 LU


Part 5

connected are 2 apartments = 16 LU


Part 6



Part 7



Part 8



Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

EN 806-3:2006 (E)

12

Annex B (informative)

Design flow rates in relation to total flow rates

The diagram (Figure B.1) shows a possibility to determine the design flow-rate QD from LU for standard-installations. Where nationally approved further such diagrams (e.g. for various types of buildings) may be used.

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

EN 806-3:2006 (E)

13

Key 1 Design flow rate Q D 2 Total flow rate Q T in LU 3 Example of highest single value LU

Figure B.1 Design flow rate Q D in l/s for standard-installations in relation to the total flow rate Q T in LU

Licensed copy:Southbank University, 13/05/2008, Uncontrolled Copy, BSI

EN 806-3:2006 (E)

14

Annex C (informative)

List of national pipe sizing methods

The following survey gives information about existing national calculation methods which can be used as an alternative to this European Standard or in cases where reasons for differentiated pipe sizing are given e.g. for big buildings, industrial and commercial plants etc. If any other national calculation methods exist, which are not listed here, it is recommended that the national standardization body should give information in the foreword of the national edition of EN 806-3.

Table C.1 National pipe sizing methods

Country Document No Title

Austria NORM B 2531-2 Trinkwasserversorgungseinrichtungen in Grundstcken; Bemessung der Rohrleitungen

Denmark DS 439 Code of Practice for domestic water supply installations

Finland National Building Code of Finland, D1

Water supply and drainage installations for buildings Regulations and recommendations 1987

France NF P40-202 (ref DTU 60.11)

Rgles de calcul des installations de plomberie sanitaire et des installations d'vacuation des eaux pluviales

Germany DIN 1988-3 Technische Regeln fr Trinkwasser-Installationen (TRWI); Ermittlung der Rohrdurchmesser; Technische Regel des DVGW

The Netherlands VEWIN Working Sheets WB 2.1 WB 2.1 A WB 2.1 C WB 2.1 G

Principles of calculation: General and overview Principles of calculation: Flow rate and working pressures for tapware and apparatus Principles of calculation: Calculation and design criteria Principles of calculation and tables for determining pressure losses in pipes

Spain Cdigo Tcnico de la Edificatin, Seccin HS4 PNE 149201

Suministro de agua Abastecimiento de agua. Dimensionamiento de instalaciones interiores de agua

United Kingdom BS 6700:1997 Specification for design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

blankLic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I

BS EN

BSI

Lic

ensed copy:S

outhbank Universit

y, 1

3/05

/200

8, U

ncon

trol

led

Copy

, BS

I389 Chiswick High Road

London

W4 4AL806-3:2006

BSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.

Revisions

British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions.

It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400.

BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards.

Buying standards

Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: [email protected]. Standards are also available from the BSI website at http://www.bsi-global.com.

In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested.

Information on standards

BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: [email protected].

Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 7001. Email: [email protected].

Information regarding online access to British Standards via British Standards Online can be found at http://www.bsi-global.com/bsonline.

Further information about BSI is available on the BSI website at http://www.bsi-global.com.

Copyright

Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI.

This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.

Details and advice can be obtained from the Copyright & Licensing Manager. Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553. Email: [email protected].

Document Bookmarks

bs en 806-3-2006 water for human consumption

Documents

british standard bs

bsithis british standard

british standardics

note en

european developments

european publications

standards policy

uncontrolled copy