EN 16933-2-2017 en Drain and sewer systems outside buildings - Design - Part 2 Hydraulic design.pdf

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1、Drain and sewer systems outside buildings - DesignPart 2: Hydraulic designBS EN 169332:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16933-2 September 2017 ICS 93.030 English Version Drain and sewer systems o

2、utside buildings - Design - Part 2: Hydraulic design Rseaux dvacuation et dassainissement lextrieur des btiments - Conception - Partie 2 : Conception hydraulique Entwsserungssysteme auerhalb von Gebuden - Planung - Teil 2: Hydraulische Planung This European Standard was approved by CEN on 30 July 20

3、17. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained

4、on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CEN

5、ELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Ita

6、ly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Cen

7、tre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16933-2 ENational forewordThis British Standard is the UK implementation of EN 169332:2017.The UK participation in its preparation was entr

8、usted to Technical Committee B/505/22.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards In

9、stitution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 90667 1ICS 93.030Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2017.Amendments/

10、corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 169332:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16933-2 September 2017 ICS 93.030 English Version Drain and sewer systems outside buildings - Design - Part 2: Hydraulic design Rseaux dvacuation et dassainissem

11、ent lextrieur des btiments - Conception - Partie 2 : Conception hydraulique Entwsserungssysteme auerhalb von Gebuden - Planung - Teil 2: Hydraulische Planung This European Standard was approved by CEN on 30 July 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which st

12、ipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This Europea

13、n Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are t

14、he national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Roman

15、ia, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form

16、 and by any means reserved worldwide for CEN national Members. Ref. No. EN 16933-2 EBS EN 169332:2017EN 16933-2:2017 (E) 2 Contents Page European foreword . 5 Introduction 6 1 Scope 8 2 Normative references 8 3 Terms and definitions . 8 4 Symbols and units 10 5 General . 11 6 Design criteria . 12 7

17、Hydraulic capacity of pipelines . 12 7.1 Introduction . 12 7.2 Pipeline headlosses . 12 7.2.1 General . 12 7.2.2 The Colebrook-White formula. 12 7.2.3 The Manning formula . 13 7.2.4 Pipeline roughness values 13 7.2.5 Pipeline headloss values . 13 7.3 Local headlosses . 13 7.4 Total headlosses . 13 8

18、 Incoming flows 14 8.1 Foul wastewater flows 14 8.1.1 General . 14 8.1.2 Calculation of foul wastewater flow rates based on the appliances connected 14 8.1.3 Calculation of foul wastewater flow rates from population and average flows 14 8.2 Rainfall and runoff from precipitation . 15 8.2.1 Rainfall

19、. 15 8.2.2 Runoff . 15 8.3 Extraneous flows 16 9 Hydraulic calculation of drain and sewer systems 17 9.1 General . 17 9.2 Flow in sewer systems 17 9.3 Flow simulation methods 19 9.3.1 Introduction . 19 9.3.2 Simple/empirical methods . 19 9.3.3 Other simplified methods . 19 9.3.4 Dynamic wave methods

20、 . 19 9.3.5 Selection of calculation method 19 9.4 Surface flood routing 20 9.5 Validation of models . 20 10 Hydraulic design . 21 10.1 Capacity of drains and sewers . 21 10.1.1 General . 21 10.1.2 Foul drains and sewers 21 10.1.3 Surface water drains and sewers . 21 BS EN 169332:2017EN 16933-2:2017

21、 (E) 3 10.1.4 Combined drains and sewers . 22 10.2 Design for self-cleansing 22 10.2.1 Sediment transport 22 10.2.2 Minimization of blockages 22 10.3 Sewers with steep gradients . 23 10.4 Surface water inlets . 23 10.5 Separators, screens and pretreatment devices . 23 10.5.1 General . 23 10.5.2 Cont

22、rol of sediments 24 10.5.3 Control of grease and fats 24 10.5.4 Control of light liquids 25 10.5.5 Treatment of surface water to remove dissolved pollutants . 25 10.5.6 Screening . 26 10.6 Infiltration drainage systems . 26 10.7 Evaporation systems . 26 10.8 Manholes and inspection chambers 26 10.9

23、Combined sewer overflows . 27 10.10 Tanks and ponds . 27 10.10.1 General . 27 10.10.2 Detention tanks . 27 10.10.3 Ponds 28 10.11 Outfalls . 28 11 Sources of additional information 28 Annex A (informative) Sources of additional information . 29 A.1 National Standards Bodies 29 A.2 Austria 29 A.2.1 R

24、egulatory Bodies 29 A.2.2 Other organisations . 29 A.3 Denmark 29 A.3.1 Regulatory Bodies 29 A.3.2 Other organisations . 30 A.4 France . 31 A.4.1 Regulatory Bodies 31 A.4.2 Other organisations . 31 A.5 Germany . 31 A.5.1 Regulatory Bodies 31 A.5.2 Other organisations . 32 A.6 Ireland 32 A.6.1 Regula

25、tory Bodies 32 A.7 Italy 33 A.7.1 Regulatory Bodies 33 A.7.2 Other organisations . 33 A.8 The Netherlands 33 BS EN 169332:2017EN 16933-2:2017 (E) 4 A.8.1 Regulatory Bodies 33 A.8.2 Other organisations . 33 A.9 Norway . 34 A.9.1 Regulatory Bodies 34 A.9.2 Other organisations . 34 A.10 Portugal . 34 A

26、.10.1 Regulatory Bodies 34 A.10.2 Other organisations . 35 A.11 Sweden . 35 A.11.1 Regulatory Bodies 35 A.11.2 Other organisations . 35 A.12 Switzerland . 35 A.12.1 Regulatory Bodies 35 A.12.2 Other organisations . 36 A.13 United Kingdom 36 A.13.1 Regulatory Bodies 36 A.13.1.1 General 36 A.13.1.2 En

27、gland 36 A.13.1.3 Wales 37 A.13.1.4 Scotland . 37 A.13.1.5 Northern Ireland 38 A.13.2 Other organisations . 38 Bibliography . 40 BS EN 169332:2017EN 16933-2:2017 (E) 5 European foreword This document (EN 16933-2:2017) has been prepared by Technical Committee CEN/TC 165 “Wastewater engineering”, the

28、secretariat of which is held by DIN. 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 March 2018 and conflicting national standards shall be withdrawn at the latest by March 2018. Attention is draw

29、n to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This European Standard EN 16933, Drain and sewer systems outside buildings Design, contains the followi

30、ng parts: Part 1: Physical design1) Part 2: Hydraulic design. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estoni

31、a, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. 1) Currently in p

32、reparation. BS EN 169332:2017EN 16933-2:2017 (E) 6 Introduction Drain and sewer systems are part of the overall wastewater system that provides a service to the community. This can be briefly described as: removal of wastewater from premises for public health and hygienic reasons; prevention of floo

33、ding in urbanised areas; protection of the environment. The overall wastewater system has four successive functions: collection; transport; treatment; discharge. Collection and transport of wastewater is provided by drain and sewer systems. EN 752:2017 provides a framework for the design, constructi

34、on, maintenance, operation and rehabilitation of drain and sewer systems outside buildings. This is illustrated in the upper part of the diagram in Figure 1. EN 752:2017 is supported by more detailed standards for the investigation, design, construction, organization and control of drain and sewer s

35、ystems. Investigation and assessment standards include: EN 13508, Investigation and assessment of drain and sewer systems outside buildings. Design and construction standards include: EN 169322), Drain and sewer systems outside buildings Pumping systems; EN 169333), Drain and sewer systems outside b

36、uildings Design; EN 12954), Structural design of buried pipelines under various conditions of loading; EN 1610, Construction and testing of drains and sewers; EN 12889, Trenchless construction and testing of drains and sewers; EN 15885, Classification and characteristics of techniques for renovation

37、, repair and replacement of drains and sewers. Management and control standards include: EN 14654, Management and control of operational activities in drain and sewer systems outside buildings. 2) Currently in preparation. 3) Currently in preparation. 4) Currently in preparation. BS EN 169332:2017EN

38、 16933-2:2017 (E) 7 Figure 1 Relationship to EN 752:2017 and other drain and sewer standards Source EN 752:2017 BS EN 169332:2017EN 16933-2:2017 (E) 8 1 Scope This European Standard specifies requirements for the design of drain and sewer systems outside buildings. It is applicable to drain and sewe

39、r systems from the point where the wastewater leaves a building, roof drainage system, or paved area, to a point where it is discharged into a wastewater treatment plant or receiving water body. This document specifies requirements for the hydraulic design of drain and sewer systems and the assessme

40、nt of the capacity of existing drain and sewer systems. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest

41、 edition of the referenced document (including any amendments) applies. EN 858-1, Separator systems for light liquids (e.g. oil and petrol) Part 1: Principles of product design, performance and testing, marking and quality control EN 858-2:2003, Separator systems for light liquids (e.g. oil and petr

42、ol) Part 2: Selection of nominal size, installation, operation and maintenance EN 1825-1, Grease separators Part 1: Principles of design, performance and testing, marking and quality control EN 1825-2:2002, Grease separators Part 2: Selection of nominal size, installation, operation and maintenance

43、EN 16323:2014, Glossary of wastewater engineering terms EN 752, Drain and sewer systems outside buildings Sewer system management 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 16323, EN 752 and the following apply. NOTE 1 Certain key definitions fro

44、m EN 16323:2014 have been repeated below for clarity. The following additional terms used in this document are defined in EN 16323: backdrop manhole; catchment area; combined sewer overflow; combined system; detention tank; domestic wastewater; drain; dry weather flow; extraneous flow; foul wastewat

45、er; gradient; gravity system; hydro-biological stress; industrial wastewater; infiltration (see Figure 2); inspection chamber; inverted syphon; maintenance; manhole; outfall; ramp manhole; receiving water body; rehabilitation; relevant authority; renovation; repair; replacement; rising main; runoff

46、coefficient; self-cleansing; self-purifying capacity; separate system; septic wastewater; BS EN 169332:2017EN 16933-2:2017 (E) 9 sewer; sewer system; surcharge; tank sewer; time of concentration; time of flow; wastewater treatment plant. NOTE 2 The following additional terms used in this document ar

47、e defined in EN 752:2017: expected frequency flooding rainfall intensity 3.1 depression storage precipitation retained in surface hollows that does not contribute to runoff 3.2 rainwater water arising from atmospheric precipitation, which has not yet collected matter from the surface Note 1 to entry

48、: See Figure 2. SOURCE: EN 16323:2014, 2.1.1.1 3.3 runoff water from precipitation that flows off a surface to reach a drain, sewer or receiving water Note 1 to entry: See Figure 2. SOURCE: EN 16323:2014, 2.1.1.2 3.4 sub-critical flow state of flow when the water velocity is less than the velocity o

49、f the small surface wave with water levels tending to be stable 3.5 super-critical flow state of flow when the water velocity is greater than the velocity of the small surface wave with violent fluctuations in water level being possible 3.6 surface receiving water body receiving water body that is on the surface of the ground (e.g. river, lake or sea) Note 1 to entry: See Figure 2. SOURCE: EN 16323:2014, 2.1.3.7 3.7 surface water water from precipitation, which has not seeped into