BSEN1205632000建筑物内部的自流排水系统屋面排水设计和计算Gravitydrainage

|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||BRITISHSTANDARDBSEN12056-3:2000TheEuropeanStandardEN12056-3:2000hasthestatusofaBritishStandardICS91.060.20;91.140.80NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAWGravitydrainagesystemsinsidebuildingsÐPart3:Roofdrainage,layoutandcalculationLicensedcopy:RMJM,29/08/2005,UncontrolledCopy,©BSI©BSI09-2000ISBN0580364860BSEN12056-3:2000AmendmentsissuedsincepublicationAmd.No.DateCommentsNationalforewordThisBritishStandardistheofficialEnglishlanguageversionofEN12056-3:2000.ItsupersedesBS6367:1983whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedbyTechnicalCommitteeB/505,Wastewaterengineering,toSubcommitteeB/505/21,Roofdrainageandsanitarypipework,whichhastheresponsibilityto:Ðaidenquirerstounderstandthetext;ÐpresenttotheresponsibleEuropeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;ÐmonitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.Alistoforganizationsrepresentedonthissubcommitteecanbeobtainedonrequesttoitssecretary.ThenationalannexesareaninformativeelementofthisstandardandcontaininformationprovidedtosupporteasierimplementationofEN12056-3:2000intheUnitedKingdom,withintheframeworkenvisagedbythescopeofthatstandard.TheythereforeconstitutearevisionofthosepartsofBS6367:1983thatarenototherwisesupersededbyBSEN12056-3:2000.However,usersareremindedthatonlythenormativeelementsoftheadoptedEuropeanStandardsetouttheprovisionstowhichitisnecessarytoconforminordertoformpartofatradedescriptionwhencitingthisBritishStandardbynumberorwhencompliancewithitisclaimed.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSIStandardsCatalogueunderthesectionentitledªInternationalStandardsCorrespondenceIndexº,orbyusingtheªFindºfacilityoftheBSIStandardsElectronicCatalogue.ABritishStandarddoesnotpurporttoincludeallthenecessaryprovisionsofacontract.UsersofBritishStandardsareresponsiblefortheircorrectapplication.AdditionalinformationItisrecognizedthatFigure2,Figure3,Figure4andFigure11,alongwiththelogicdiagramscontainedinannexD,areofpoorquality.ThishasbeenreportedtoCENinaproposaltocorrectthemintheEngishlanguageversionofEN12056-3:2000.Untilthestandardiscorrected,whichBSIisnotauthorizedtodo,itisstronglyrecommendedthatthesefiguresbeusedwithcare.TextualerrorsThetextualerrorssetoutbelowwerediscoveredwhentheEnglishlanguageversionofEN12056-3:2000wasadoptedasthenationalstandard.TheyhavebeenreportedtoCENinaproposaltoamendthetextoftheEuropeanStandard.±Note1toFigure8shouldrefertoTable8,ratherthanTable7.±Note3toFigure8shouldrefertoTable8,ratherthanTable7.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theENtitlepage,pages2to83andabackcover.TheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.Licensedcopy:RMJM,29/08/2005,UncontrolledCopy,©BSI:Roofdrainage,layoutandcalculationRéseauxd'évacuationgravitaireàl'intérieurdesbâtiments-Partie3:Systèmed'évacuationdeseauxpluviales,conceptionetcalculsSchwerkraftentwässerungsanlageninnerhalbvonGebäuden-Teil3:Dachentwässerung,PlanungundBemessungThisEuropeanStandardwasapprovedbyCENon27October1999.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITÉEUROPÉENDENORMALISATIONEUROPÄISCHESKOMITEEFÜRNORMUNGCentralSecretariat:ruedeStassart,36B-1050Brussels©2000CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN12056-3:2000ELicensedcopy:RMJM,29/08/2005,UncontrolledCopy,©BSI©BSI09-2000ContentsPageForeword31Scope42Normativereferences53Definitionsandsymbols63.1Definitions63.2Symbols74Runoffcalculations84.1Quantityofrainwaterrunoff84.2Rainfallintensity,r94.3Eff