BS 8582-2013 Code of practice for surface water management for development sites《开发场所地表水管理惯例》.pdf

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1、BSI Standards PublicationBS 8582:2013Code of practice for surfacewater management fordevelopment sitesPublishing and copyright informationThe BSI copyright notice displayed in this document indicates when the documentwas last issued. The British Standards Institution 2013Published by BSI Standards L

2、imited 2013ISBN 978 0 580 76700 5ICS 91.120.30The following BSI references relate to the work on this document:Committee reference CB/501Draft for comment 12/30253265 DCPublication historyFirst published November 2013Amendments issued since publicationDate Text affectedBS 8582:2013 BRITISH STANDARDC

3、ontents1 Scope 12 Normative references 43 Terms and definitions 44 Linking surface water management and development planning 75 Surface water management design: principles and criteria 136 Predevelopment flood hazards: assessment of risk and impacts on surfacewater management design 237 Evaluating t

4、he predevelopment site characteristics relating to surfacewater run-off 278 Evaluating the proposed development site characteristics relating tosurface water run-off 319 Drainage design methods and tools 3210 Drainage construction 3811 Maintenance of surface water drainage systems 4012 Information p

5、rovision and community engagement 42AnnexesAnnex A (informative) Stakeholders to the surface water managementprocess 44Annex B (informative) Climate change 47Bibliography 48List of figuresFigure 1 Surface water management: design process map 2Figure 2 Process integration 8Figure 3 Summary of design

6、criteria 17List of tablesTable 1 Multi functional surface water management design 12Table 2 Options for interception delivery 18Table 3 Examples of infiltration drainage components 19Table 4 Flood risk assessment requirements 24Table 5 Methods for calculating greenfield run-off peak flow rates 28Tab

7、le 6 Indicative long-term storage volumes for a typical greenfielddevelopment (to be used for initial feasibility only 18) 36Table 7 Operation and maintenance of surface water managementsystems 40Table A.1 Stakeholders to the surface water management process 44Table B.1 National precautionary sensit

8、ivity ranges for peak rainfall intensitiesand peak river flows 47Summary of pagesThis document comprises a front cover, an inside front cover, pages 1 to 50, aninside back cover and a back cover.BRITISH STANDARD BS 8582:2013 The British Standards Institution 2013 iForewordPublishing informationThis

9、British Standard is published by BSI Standards Limited, under licence fromThe British Standards Institution, and came into effect on 30 November 2013. Itwas prepared by Technical Committee CB/501, Flood risk and watercourses. A listof organizations represented on this committee can be obtained on re

10、quest toits secretary.Relationship with other publicationsThis British Standard is complementary to: BS 8533, Assessing and managing flood risk in development Code ofpractice; BS EN 752, Drain and sewer systems outside buildings; BS 8595:2013, Code of practice for the selection of water reuse system

11、sInformation about this documentThe initial drafting of this British Standard was produced in association with BISas part of their ongoing programme of support for standardization.The focus of this British Standard is on the sustainable management of floodrisks arising from surface water run-off on

12、development sites, although criteriarelating to the management of a wider suite of environmental risks is given. Thebenefits that can accrue from surface water drainage systems are highlightedand relevant references provided.This British Standard has been developed to support:1) planners and drainag

13、e approval bodies: in setting consistent drainagecriteria and principles (for new developments and redevelopments) thatdeliver effective surface water flood risk management as sustainably aspossible while contributing towards the delivery of relevant environmental,sustainability and urban design pla

14、nning objectives for the site and localarea.2) designers: in planning and implementing safe, robust surface watermanagement systems that meet the criteria and principles referred to in 1).Use of this documentAs a code of practice, this British Standard takes the form of guidance andrecommendations.

15、It should not be quoted as if it were a specification andparticular care should be taken to ensure that claims of compliance are notmisleading.Any user claiming compliance with this British Standard is expected to be able tojustify any course of action that deviates from its recommendations.It has b

16、een assumed in the preparation of this British Standard that theexecution of its provisions will be entrusted to appropriately qualified andexperienced people, for whose use it has been produced.Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Its

17、recommendations are expressed in sentences in which the principal auxiliaryverb is “should”.Commentary, explanation and general informative material is presented insmaller italic type, and does not constitute a normative element.BRITISH STANDARDBS 8582:2013ii The British Standards Institution 2013Th

18、e word “should” is used to express recommendations of this standard. Theword “may” is used in the text to express permissibility, e.g. as an alternative tothe primary recommendation of the Clause. The word “can” is used to expresspossibility, e.g. a consequence of an action or an event.Notes and com

19、mentaries are provided throughout the text of this standard.Notes give references and additional information that are important but do notform part of the recommendations. Commentaries give background information.Contractual and legal considerationsThis publication does not purport to include all th

20、e necessary provisions of acontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legalobligations.BRITISH STANDARD BS 8582:2013 The British Standards Institution 2013 iiiIntroductionSurface water drainage systems have historically

21、comprised subsurface pipeconveyance and tank storage systems that drain and control run-off fromdevelopment sites. These drainage systems have generally been designed tomeet the criteria set out in Sewers for Adoption N1, Sewers for Scotland N2and Sewers for Adoption Northern Ireland N3) in order to

22、 secure long-termadoption and ownership of the infrastructure from local sewerage undertakers.It is recognized that the rapid subsurface drainage of developed impermeablesurfaces, even with controlled discharges for extreme events, is still likely toincrease flood risk for the receiving catchment an

23、d adversely affect the localhydrological and morphological balances. In addition, there is a significant riskof pollution to the receiving environment as a result of:a) urban surface water run-off contaminants being discharged directly towatercourses;b) foul sewage contaminants contained within the

24、discharged surface waterrun-off as a result of misconnections; and/orc) the operation of combined sewer overflows during periods of extremerainfall.Sustainable drainage systems (SuDS) are required to:a) minimize the change in the hydrological regime resulting from theurbanization of the area (and as

25、sociated negative impact on downstreamflood risk);b) protect or enhance:1) receiving watercourse water quality and morphology,2) natural drainage patterns on the development site,3) habitat diversity and biodiversity, and4) public health and amenity;c) protect the safe replenishment of groundwater r

26、esources and riverbaseflows and conserve surface water resources;d) manage run-off in excess of the drainage system capacity to mitigate on-siteflood risk to people and property.In England and Wales, the Flood and Water Management Act 2010 1 makesprovision for the formation of SuDS Approving Bodies

27、(SABs) within Lead LocalFlood Authorities (LLFAs) to approve all surface water management systems innew developments and redevelopments to national standards, prior to takingresponsibility for their long-term operation and maintenance (where the systemserves more than one property). At the time of p

28、ublication, the nationalstandards were still being developed. The Flood and Water Management Act2010 1 also amended the Water Industry Act 1991, Section 106 2, by makingthe right to connect surface water to the public sewer conditional on a SABapproving the site drainage system. In England, the Nati

29、onal Planning PolicyFramework 3 encourages the use of SuDS. Where local authorities do notadopt these systems, water companies or other private organizations might takeownership of the systems for a fee.In Wales, the following planning policy technical advice notes (TANs) promotethe implementation o

30、f SuDS: TAN 15: Development and flood risk 4; TAN 5: Nature conservation and planning 5.BRITISH STANDARDBS 8582:2013iv The British Standards Institution 2013In Scotland, the Water Environment and Water Services (WEWS) (Scotland) Act2003 6 makes provision for the protection of the water environment.

31、TheWEWS Act 2003 6 made the use of SuDS obligatory when dealing with surfacewater drainage for all new developments (except single dwellings anddischarges to coastal waters). Scottish Water were made responsible for thefuture maintenance and capital replacement of shared public SuDS that managerun-o

32、ff from roofs and paved surfaces, providing they are designed to ScottishWater specifications as set out in Sewers for Scotland N2. The Flood RiskManagement (Scotland) Act 2009 7 introduced requirements for a moresustainable approach to flood risk management. The Scottish EnvironmentProtection Agenc

33、y (SEPA) have set out regulatory guidance on the managementof surface water discharges from built developments in WAT-RM-08 8. TheScottish Planning Policy 9 includes policies on flooding and drainage and issupported by the following Planning Advice Notes (PANs) relating to SuDS: PAN 61: Planning and

34、 Sustainable Urban Drainage Systems 10; PAN 69: Planning and Building Standards Advice on Flooding 11; PAN 79: Water and Drainage 12.Where SuDS are adopted by local roads authorities, the SuDS for Roads 13manual is used to set the appropriate adoption standards.In Northern Ireland, Planning Policy S

35、tatement (PPS) 15: Planning and Flood Risk14 sets out the Department of the Environments planning policies onminimizing flood risk through sustainable development and the Department ofAgriculture and Rural Development (DARD) Rivers Agency is responsible forconsenting discharges to watercourses. The

36、Northern Ireland EnvironmentAgency has been charged with the responsibility of meeting a range of theWater Framework Directive 15 requirements, some of which encourage thewider application of SuDS for treating contaminated urban run-off.Surface water drainage within the property curtilage is also de

37、alt with in theBuilding Regulations 2010, Approved Document H 16 and the BuildingRegulations (Northern Ireland) Order 17.BRITISH STANDARD BS 8582:2013 The British Standards Institution 2013 vBRITISH STANDARDBS 8582:2013This page deliberately left blankvi The British Standards Institution 20131 Scope

38、This British Standard gives recommendations on the planning, design,construction and maintenance of surface water management systems for newdevelopments and redevelopment sites in:a) minimizing and/or mitigating flooding and other environmental risks arisingfrom:1) site surface water run-off as a re

39、sult of rain falling onto thedevelopment site;2) run-off conveyed across or arising on the site from other sources.NOTE 1 Run-off resulting from snow melt is not covered in this BritishStandard.b) maximizing the societal and environmental benefits arising from the:1) use of surface water run-off to

40、protect and enhance local waterresources and supplies;2) contribution of surface water management systems in mitigatingclimate risks associated with urbanization;3) integration of surface water management systems with urban design indelivering amenity and community value and in repairing, protecting

41、and enhancing landscape and/or townscape character;4) repair, protection and enhancement of biodiversity.NOTE 2 For further information on the planning, design, construction andmaintenance of SuDS see the CIRIA SuDS Manual 18.NOTE 3 A design process map for surface water management is set out in Fig

42、ure 1,which supports effective navigation through this standard. This map works inconjunction with Figure 2, which shows how the surface water management designprocess is linked with the development planning process.BRITISH STANDARD BS 8582:2013 The British Standards Institution 2013 1Figure 1 Surfa

43、ce water management: design process mapa) Stage 1BRITISH STANDARDBS 8582:20132 The British Standards Institution 2013Figure 1 Surface water management: design process mapb) Stages 2 and 3BRITISH STANDARD BS 8582:2013 The British Standards Institution 2013 32 Normative referencesThe following documen

44、ts, in whole or in part, are normatively referenced in thisdocument and are indispensable for its application. For dated references, onlythe edition cited applies. For undated references, the latest edition of thereferenced document (including any amendments) applies.BS 5930, Code of practice for si

45、te investigationsBS 8533:2011, Assessing and managing flood risk in development Code ofpracticeBS 8515, Rainwater harvesting systems Code of practiceBS 10175, Investigation of potentially contaminated sites Code of practiceBS EN 752, Drain and sewer systems outside buildingsOther publicationsN1WRc p

46、lc. Sewers for Adoption A design and construction guide fordeveloper. Seventh edition. Swindon: WRc plc., 2012.ISBN: 978 1 898920 65 6.N2WRc plc. Sewers for Scotland. Second edition. WRC plc., 2007.ISBN: 978 1 898920 60 1.N3WRc plc. Sewers for Adoption, Northern Ireland. WRc plc., 2010.ISBN: 978 1 8

47、98920 66 3.N4BUILDING RESEARCH ESTABLISHMENT. Soakaway design: Digest 365. BRE365. London: BRE Bookshop, 1991. ISBN: 1 86081 604 5.N5BETTESS, R. 1996. Infiltration drainage: manual of good practice. CIRIAReport R156. London: CIRIA. ISBN: 978 0 86017 457 8.N6ENVIRONMENT AGENCY, SCOTTISH ENVIRONMENT P

48、ROTECTION AGENCYAND ENVIRONMENT orb) run-off that is unable to enter the drainage system; orc) blockage and/or structural failure of any part of the drainage system; ord) flood levels in the receiving water body limiting the capacity of thedrainage system3.12 flood extentarea that is susceptible to

49、flooding BS 8533:2011, 3.33.13 flood riskcombination of the probability of a flood event and the potential adverseconsequences for human health, the environment, cultural heritage andeconomic activity associated with a flood event EC Directive 2007/60/EC 193.14 flood risk managementaction that manages and/or reduces the consequences of flooding on people,land and/or buildings, or environmental assets3.15 fluvial floodingflooding from a river or other wa