【英文标准名称】:StandardTestMethodforWaterPenetrationofExteriorMetalRoofPanelSystemsbyUniformStaticAirPressureDifference
【原文标准名称】:采用均匀静态空气压差分析外部金属屋面板系统防水漏性能的标准试验方法
【标准号】:ASTME1646-1995(2003)
【标准状态】:现行
【国别】:
【发布日期】:1995
【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】:E06.57
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:漏泄试验;板;灰泥;建筑工程;压力试验;试验;均匀静态空气压差;均匀静态空气压差;蓄水屋面;雨;屋面板;侧边搭接;边缝;铺屋顶用的编织的柳条或榛树枝;均匀静态空气压差;结构建筑材料;热膨胀;水漏性;空气压力试验;外部金属屋面板系统;屋顶和防水材料;水;材料
【英文主题词】:air;airpressure;leakage;mastic;metal;panel;ponding;rain;roof;roofpanel;pressure;sidelap;sideseam;static;structural;thermalexpansion;water;waterleakage;waterpenetration;water-spray
【摘要】:Thistestmethodisastandardprocedurefordeterminingtheresistancetowaterpenetrationunderuniformpositivestaticairpressuredifferences,andsimulateswinddrivenrainimposedonsidelapsandrainthatisfreetodrainwhilebuildingawaterheadasitflows.Theslopeoftheroofissignificant.Thesefactorsshallbefullyconsideredpriortospecifyingthetestpressuredifference.Note18212;Inapplyingtheresultsoftestsbythismethod,notethattheperformanceofarooforitscomponents,orboth,maybeafunctionofproperinstallationandadjustment.Inservice,theperformancealsodependsontherigidityofsupportingconstruction,roofslope,andontheresistanceofcomponentstodeteriorationbyvariouscauses:corrosiveatmosphere,aging,ice,vibration,thermalexpansionandcontraction,etc.Itisdifficulttosimulatetheidenticalcomplexwettingconditionsthatcanbeencounteredinservice,includinglargewind-blownwaterdrops,increasingwaterdropimpactpressureswithincreasingwindvelocity,andlateralorupwardmovingairandwater.Somedesignsaremoresensitivethanotherstothisupwardmovingwater.Note28212;Thisisatestprocedure.Itistheresponsibilityofthespecifyingagencytodeterminethespecimenconstruction,size,andtestpressuresafterconsideringthemethodrsquo;guidelines.Practicalconsiderationssuggestthateverycombinationofpanelthickness,span,anddesignloadneednotbetestedinordertosubstantiateproductperformance.Note38212;Thistestmethodshallnot,byitself,bereliedupontoformconclusionsaboutoverallwaterpenetrationthroughmetalroofs.Aroofcontainsmanydetails.Althoughprescribedmodificationsareoutsidethescopeofthistestmethod,anexperiencedtestingengineerisabletousetheprinciplespresentedinthistestmethodandgeneratesignificantdatabyisolatingspecificdetailsandmeasuringleakage.1.1Thistestmethodcoversthedeterminationoftheresistanceofexteriormetalroofpanelsystemstowaterpenetrationwhenwaterisappliedtotheoutdoorfacesimultaneouslywithastaticairpressureattheoutdoorfacehigherthanthepressureattheindoorface,thatis,positivepressure.ThistestmethodisaspecializedadaptionofTestMethodE331.1.2Thistestmethodisapplicabletoanyroofareaandisintendedtomeasureonlythewaterpenetrationassociatedwiththefieldofroofincludingpanelsidelapsandstructuralconnections.Itdoesnotincludeleakageatopeningsorperimeteroranyotherdetails.1.3Thistestmethodislimitedtospecimensinwhichthesideseamsandattachmentsareclearlyvisibleandinwhichthesourceofleakageisreadilydetermined.Compositesystemsinwhichthesourcecannotbereadilydeterminedareoutsidethescopeofthistestmethod.1.4Theproperuseofthistestmethodrequiresaknowledgeoftheprinciplesofpressureandflowmeasurement.1.5Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonlyandmaybeapproximate.1.6Thetextofthistestmethodreferencesnotesandfootnotesexcludingtablesandfigures,whichprovideexplanatorymaterial.Thesenotesandfootnotesshallnotbeconsideredasrequirementsofthetestmethod.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,see7.1.
【中国标准分类号】:P32
【国际标准分类号】:91_060_20
【页数】:6P.;A4
【正文语种】:


【英文标准名称】:Applicationguideforcapacitancecurrentswitchingforachigh-voltagecircuitbreakersratedonasymmetricalcurrentbasis
【原文标准名称】:基于平衡电流的额定交流高压断路器电容电流转换的应用指南
【标准号】:IEEEC37.012-1979
【标准状态】:作废
【国别】:美国
【发布日期】:1979
【实施或试行日期】:
【发布单位】:美国电气电子工程师学会(IEEE)
【起草单位】:IEEE
【标准类型】:()
【标准水平】:()
【中文主题词】:交流电流;高压开关装置;断路器;电容;额定电压;电气工程
【英文主题词】:Alternatingcurrent;Capacitance;Circuit-breakers;Electricalengineering;High-voltageswitchgear;Ratedvoltage
【摘要】:
【中国标准分类号】:K43
【国际标准分类号】:29_120_40
【页数】:51P;A4
【正文语种】:英语