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1、BRITISHSTANDARDBSEN1991-1-3:2003Eurocode1—Actionsonstructures—Part1-3:Generalactions—Snowloads--`,`,,,,,`,``,`,`,```,,```,,`,-`-`,,`,,`,`,,`---TheEuropeanStandardEN1991-1-3:2003hasthestatusofaBritishStandardICS91.010.30
2、
CopyrightBritishStandardsInstitutionDocumentprovidedbyIHSLicensee=HongKongPolytechnicUniv/9976803100,ReproducedbyIHSunderlicensewithBSI-UncontrolledCopy08/01/200406:14:02MDTQuestionsorcommentsaboutthismessage:pleasecalltheDocumen
3、tPolicyGroupat303-397-2295.BSEN1991-1-3:2003NationalforewordThisBritishStandardistheofficialEnglishlanguageversionofEN1991-1-3:2003.ItsupersedesDDENV1991-2-3:1996whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedbyTechnicalCommitteeB/525,Buil
4、dingandcivilengineeringstructures,toSubcommitteeB/525/1,Actions,loadingsandbasisofdesign,whichhastheresponsibilityto:—aidenquirerstounderstandthetext;—presenttotheresponsibleinternational/Europeancommitteeanyenquiriesontheinterpretation,orproposalsforchan
5、ge,andkeeptheUKinterestsinformed;—monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.Alistoforganizationsrepresentedonthissubcommitteecanbeobtainedonrequesttoitssecretary.WhereanormativepartofthisENallowsforachoicetobemadeatthenati
6、onallevel,therangeandpossiblechoicewillbegiveninthenormativetext,andaNotewillqualifyitasaNationallyDeterminedParameter(NDP).NDPscanbeaspecificvalueforafactor,aspecificlevelorclass,aparticularmethodoraparticularapplicationruleifseveralareproposedintheEN.To
7、enableEN1991-1-3tobeusedintheUK,theNDPswillbepublishedinaNationalAnnexwhichwillbeincorporatedbyamendmentintothisBritishStandardinduecourse,afterpublicconsultationhastakenplace.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublica
8、tionsreferredtointhisdocumentmaybefoundintheBSICatalogueunderthesectionentitled“InternationalStandardsCorrespondenceIndex”,orbyusingthe“Search”facilityoftheBSIElectronicCatalogueorofBritishStandardsOnline.Thispublic
