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【英文标准名称】:StandardPracticeforDeterminationofDeadLoadsandLiveLoadsassociatedwithGreenRoofSystems
【原文标准名称】:测定新暴露顶板系统相关静负荷和动态负荷的标准实施规程
【标准号】:ASTME2397-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E60.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:deadload;greenroof;liveload;sustainability;waterretention
【摘要】:Thispracticeaddressesperformancecharacteristicsforgreenroofsystemswithrespecttothedeadloadandtransientwaterliveloadoftheentiresystem.Determiningtheseperformancecharacteristicsofgreenroofsystemsprovidesinformationtofacilitatetheassessmentofrelatedengineeringaspectsofthefacility.Suchaspectsmayincludestructuraldesignrequirements,mechanicalengineeringandthermaldesignrequirements,andfireandlifesafetyrequirements.Determiningtheseperformancecharacteristicsofgreenroofsystemsprovidesinformationtofacilitateassessmentoftheperformanceofonegreenroofsystemrelativetoanother.1.1Thispracticecoversastandardizedprocedureforpredictingthesystemweightofagreenroofsystem.1.2Theprocedureaddressestheloadsassociatedwithgreenroofsystems.Componentsthataretypicallyencounteredingreenroofsystemsinclude:membranes,non-absorptiveplasticsheetcomponents,metalliclayers,fabrics,geocompositedrainlayers,syntheticreinforcinglayers,cover/recoverboards,insulationmaterials,growthmedia,granulardrainagemedia,andplantmaterials.1.3Thisprocedurealsoaddressestheweightofthegreenroofsystemundertwoconditions:(1)weightunderdrainedconditionsafternewwateradditionsbyrainfallorirrigationhaveceased(thisincludestheweightofretainedwaterandcapturedwater),and(2)weightwhenrainfallorirrigationisactivelyoccurringandthedrainagelayeriscompletelyfilledwithwater.Thefirstconditionisconsideredthedeadloadofthegreenroofsystem.Thedifferenceinweightbetweenthefirstandsecondconditions,approximatedbytheweightoftransientwaterinthedrainagelayer,isconsideredaliveload.1.4Thisproceduredoesnotaddresspointorlineloadsassociatedwitharchitecturalelementsthatarenotessentialcomponentsofaparticulargreenroofsystem.Thesearchitecturalelementsmayincludepavement,walls,andmasonry,andsoforth.1.5Thisproceduredoesnotaddressliveloadsassociatedwithconstructionactivities.1.6Thisproceduredoesnotaddressliveloadsassociatedwithsnoworwind.1.7Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesandtodeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q17
【国际标准分类号】:65_020_20;91_060_20
【页数】:3P.;A4
【正文语种】: