EN 806-3-2006 en Specifications for installations inside buildings conveying water for human consumption - Part 3 Pipe sizing - Simplified method《建筑物内部人类生活用水输送设备规范 第3部分 管尺寸 简化法》.pdf

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1、BRITISH STANDARDBS EN806-3:2006Specifications for installations inside buildings conveying water for human consumption Part 3: Pipe sizing Simplified methodThe European Standard EN 806-3:2006 has the status of a British StandardICS 91.140.60g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g5

2、4g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 806-3:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 April 2006 BSI 2006ISBN 0 580 4828

3、3 9National forewordThis 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 On publication of parts 1 to 5 of BS EN 806, BS 6700:1997 will be withdrawn.NOTE EN 806 parts 1 to 5 have been agreed by CEN to be a “package

4、” 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 Internal, whic

5、h has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the sect

6、ion 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. Co

7、mpliance with a British Standard does not of itself confer immunity from legal obligations. 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

8、international and European developments and promulgate them in the UK.Summary of pagesThis 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

9、was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 806-3April 2006ICS 91.140.60English VersionSpecifications for installations inside buildings conveying waterfor human consumption - Part 3: Pipe sizing - Simplified methodSpcifi

10、cations techniques relatives aux installations deaudestine la consommation humaine lintrieur desbtiments - Partie 3: Calculations des diamtres intrieurs -Mthode simplifieTechnische Regeln fr Trinkwasser-Installationen -Berechnung der Rohrinnendurchmesser - Teil 3:Vereinfachtes VerfahrenThis European

11、 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 concern

12、ing 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 langu

13、age 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

14、, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitat

15、ion in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 806-3:2006: EEN 806-3:2006 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms, symbols and units 4 4 Principles of pipe sizing calculations5 5 Simplified method of pipe sizing6 6 Special-ins

16、tallations 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 EN 806-3:2006 (E) 3 Foreword This European Standard (

17、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 conf

18、licting 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 C

19、EN/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, Luxembour

20、g, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. 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

21、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

22、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 install

23、ations 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 (defin

24、ition) 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 Qminl/s Flow-rate at draw-off point which is just sufficient for the appliance to function Draw-

25、off flow-rate QAl/s Assumed draw-off flow-rate at appliance for calculation purposes Total flow-rate QTl/s QA, sum of all draw-off flow-rates of the water appliances supplied Design flow-rate QDl/s Flow-rate for hydraulic calculations, taking into consideration the probable simultaneous demand Stati

26、c pressure pRPa Gauge pressure at a measuring point in the water supply system when no water flowing Flow pressure pFlPa Gauge pressure at a measuring point in the water supply system when water flowing Minimum flow pressure pminFlPa Gauge pressure required at the connection to a draw-off point at i

27、ts 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)EN 806-3:2006 (E) 5 Table 1 (concluded) Term Symbol Unit Explanation (definition) Head loss a

28、s a consequence of difference in elevation pePa - Pipe length I m - Internal diameter of pipe dimm - External diameter of pipe damm - 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

29、frequency of use. One loading unit (1 LU) equalises a draw-off flow rate QAof 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 pipe

30、s 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

31、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: garde

32、n/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

33、 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. EN 806-3:2006 (E) 6 4.4 Maximum flow velocities The figures given in Table 3 are based

34、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 c

35、lause 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

36、 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 t

37、his 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 QAof 0,1 l/s. Table 2 Draw-off flow-rates QA, minimum flow-rates at draw-off points Qminan

38、d loading units for draw-off points QAQminDraw-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,

39、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 aFor non domestic appliances check with manufacturer. 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

40、 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 chos

41、en 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

42、300 600 1 600 Highest value LU 4 15 DN 15 20 25 32 40 50 65 dimm 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 dax 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,

43、1 x 2 dimm 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 dax 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 dimm 13,0 16,0 19,6 25,6 32 39 51 72,1

44、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 Highest value LU 4 5 8 dax 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 dimm 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 EN 806-3:2006 (E) 8 Table 3 (conclud

45、ed) Table 3.5 PB Max. load LU 1 2 3 3 4 6 13 25 55 180 500 1 100 Highest value LU 2 4 5 8 dax 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 dimm 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

46、 970 Highest value LU 2 4 5 8 dax 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 dimm 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 Highest value LU 4 5 8 dax s mm 16 x 2,0 20 x 2,3 25 x

47、 2,8 32 x 3,6 40 x 4,5 50 x 5,6 63 x 6,9 dimm 12,0 15,4 19,4 24,8 31 38,8 49,2 Max length of pipe m 10 6 5 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 Highest value LU 4 5 5 8 dax 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

48、,5 dimm 11,5/12,0 14 15 20 26 33 42 54 Max length of pipe m 9 5 4 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,

49、 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). EN 806-3:2006 (E) 9 Anne