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BRITISHSTANDARDBSEN752:2008DrainandsewersystemsoutsidebuildingsICS93.030 BSEN752:2008ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon30April2008©BSI2008ISBN9780580557507NationalforewordThisBritishStandardistheUKimplementationofEN752:2008.ItsupersedesBSEN752,Parts1to7,whichhavebeenwithdrawn.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeB/505,Wastewaterengineering.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.TheBritishStandardcontainsboththetextoftheEuropeanStandardtogetherwithaNationalAnnex,whichgivesfurtherUK-specificguidanceontheapplicationoftheEuropeantext.TheEuropeanStandardshouldthereforebereadinconjunctionwiththeNationalAnnexand,toassistinthis,crossreferencestotheclausesintheEuropeantextareincludedintheheadingsintheNationalAnnex.ThisrevisionofEN752includessomeimportantandtimelychanges.Ittakesamoreintegratedviewofsewersystemmanagementinthecontextofthewiderurbandrainagesystemandthewiderwaterenvironment.ThisbothsupportsthecurrentinitiativeonintegratedurbandrainagemanagementintheUKandisessentialfortheproperimplementationoftheWaterFrameworkDirective.Inresponsetoclimatechange,theEuropeantextintroducestheconceptofexceedencefloodriskassessmentandfurtherUKguidanceonthisisgivenintheNationalAnnex.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.Amendments/corrigendaissuedsincepublicationDateCommentsEUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN752January2008ICS93.030SupersedesEN752-1:1995,EN752-2:1996,EN752-3:1996,EN752-4:1997,EN752-5:1997,EN752-6:1998,EN752-7:1998EnglishVersionDrainandsewersystemsoutsidebuildingsRéseauxd'évacuationetd'assainissementàl'extérieurdesbâtimentsEntwässerungssystemeaußerhalbvonGebäudenThisEuropeanStandardwasapprovedbyCENon24November2007.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCENManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCENManagementCentrehasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Bulgaria,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Romania,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITÉEUROPÉENDENORMALISATIONEUROPÄISCHESKOMITEEFÜRNORMUNGManagementCentre:ruedeStassart,36B-1050Brussels©2008CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN752:2008:EEN752:2008(E)2ContentsPageForeword..............................................................................................................................................................71Scope....................................................................................................................................................102Normativereferences..........................................................................................................................103Termsanddefinitions.........................................................................................................................114Objectives.............................................................................................................................................194.1General..................................................................................................................................................194.2PublicHealthandSafety.....................................................................................................................204.3OccupationalHealthandSafety.........................................................................................................204.4EnvironmentalProtection...................................................................................................................204.5SustainableDevelopment...................................................................................................................205Requirements.......................................................................................................................................215.1FunctionalRequirements....................................................................................................................215.1.1Introduction.................................................................................