ASTM D7158-2008d 沥青屋面板防风(上升力/抗上升力法)标准试验方法
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【英文标准名称】:StandardTestMethodforWindResistanceofAsphaltShingles(UpliftForce/UpliftResistanceMethod)
【原文标准名称】:沥青屋面板防风(上升力/抗上升力法)标准试验方法
【标准号】:ASTMD7158-2008d
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D08.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:asphaltshingles;calculatedwindresistance;factory-appliedsealant;fan-inducedwind;field-appliedsealant;roofing;sealantbondstrength;shinglemechanicalupliftresistance;shingleupliftpressurecoefficients;shingleupliftrigidity;windresis
【摘要】:Thewindresistanceofsealedasphaltshinglesisdirectlyrelatedtotheabilityofthesealedshingletoresisttheforceofthewindactingtolifttheshinglefromtheshinglebelow.Thistestmethodemploysthemeasuredresistanceoftheshingletomechanicalupliftaftersealingunderdefinedconditions,inacalculationwhichdetermineswhetherthisresistanceexceedsthecalculatedforceinducedbywindpassingoverthesurfaceoftheshingle.Naturalwindconditionsdifferwithrespecttointensity,duration,andturbulence;whiletheseconditionswereconsidered,andsafetyfactorsintroduced,extremenaturalvariationsarebeyondthemeansofthistestmethodtosimulate.Manyfactorsinfluencethesealingcharacteristicsofshinglesinthefield;forexample,temperature,time,roofslope,contaminationbydirtanddebris,andfastenersthataremisalignedorunderdrivenandinterferewithsealing.Itisbeyondthescopeofthistestmethodtoaddressalloftheseinfluences.Theclassificationdeterminedinthistestmethodisbasedonthemechanicalupliftresistancedeterminedwhenrepresentativesamplesofshinglesaresealedunderdefinedconditionsbeforetesting.ThecalculationsthatsupporttheClassesin4.1useseveralstandardbuildingenvironmentfactors.Theseincludethe3-swindgustexposurefromASCE-7,installationonCategoryIorIIbuildingsforallslopes,groundroughnessBorC,andinstallationonbuildings60fttallorless.Note28212;Theassumptionsusedinthecalculationsfortheclassesin4.1covertherequirementsforthemajorityoftheasphaltshingleroofsinstalled.Ifenvironmentalfactorsareoutsidethoseusedinthecalculationsfortheseclasses,suchasgroundroughnessD,buildingheightsgreaterthan60fttall,buildingusecategoriesIIIorIVandotherexposuresasdefinedbyASCE-7,othercalculationsarerequired.Consulttheshinglemanufacturerforthespecificshinglex2019;sDCp,EI,L,L1,andL2valuesneededtocompletethesecalculations.Thetesttodetermineupliftcoefficientsisconductedwithawindvelocityof15.6x00B1;1.3m/s(35x00B1;3mph).Researchdataobtainedduringthedevelopmentofthistestprocedure,aswellasstandardwindmodelingpractices,providesfordataextrapolationtootherwindspeeds.Inordertosimulatetheraisedshingleedgethatisinherentbehaviorunderhighwindexposure,shimsareinsertedunderthewindwardedgeoftheshingleasappropriatebasedonwindspeedandupliftrigidityoftheshinglebeinginvestigated.Thistestmethodprovidesameansofmeasuringshingleupliftrigiditywhichisusedtodeterminethecorrectshimthickness.Additionally,thistestmethodallowsfortheuseofadefaultvalueforupliftrigidity(EI)of7175N-mm2(2.5lbf-in.2),ifarigiditymeasurementisnotmade.ThisdefaultvalueisconservativesincethelowestEImeasuredinthedevelopmentofthisprogramwas14350N-mm2(5.0lbf-in.2).Note38212;Theentirefieldofwindengineeringisbasedonuseofsmall-scalemodelsinwindtunnelsusingwindspeedsmuchlowerthanthefull-scalevalues.BuildingCodespermittestingofthistypetoreplacetheanalyticalprovisionsoftheBuildingCodethroughtheprovisionsofASCE7.(SeeAppendixX1fordetailsandreferences.)1.1Thistestmethodcoverstheprocedureforcalculatingthewindresistanceofasphaltshingleswhenappliedinaccordancewiththemanufacturer''sinstructions,andsealedunderdefinedconditions.Shingledesignsthatdependoninterlockingorproductrigiditytoresistthewindcannotbeevaluatedusingthis......
【中国标准分类号】:Q17
【国际标准分类号】:91_060_20
【页数】:16P.;A4
【正文语种】:英语
【原文标准名称】:沥青屋面板防风(上升力/抗上升力法)标准试验方法
【标准号】:ASTMD7158-2008d
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D08.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:asphaltshingles;calculatedwindresistance;factory-appliedsealant;fan-inducedwind;field-appliedsealant;roofing;sealantbondstrength;shinglemechanicalupliftresistance;shingleupliftpressurecoefficients;shingleupliftrigidity;windresis
【摘要】:Thewindresistanceofsealedasphaltshinglesisdirectlyrelatedtotheabilityofthesealedshingletoresisttheforceofthewindactingtolifttheshinglefromtheshinglebelow.Thistestmethodemploysthemeasuredresistanceoftheshingletomechanicalupliftaftersealingunderdefinedconditions,inacalculationwhichdetermineswhetherthisresistanceexceedsthecalculatedforceinducedbywindpassingoverthesurfaceoftheshingle.Naturalwindconditionsdifferwithrespecttointensity,duration,andturbulence;whiletheseconditionswereconsidered,andsafetyfactorsintroduced,extremenaturalvariationsarebeyondthemeansofthistestmethodtosimulate.Manyfactorsinfluencethesealingcharacteristicsofshinglesinthefield;forexample,temperature,time,roofslope,contaminationbydirtanddebris,andfastenersthataremisalignedorunderdrivenandinterferewithsealing.Itisbeyondthescopeofthistestmethodtoaddressalloftheseinfluences.Theclassificationdeterminedinthistestmethodisbasedonthemechanicalupliftresistancedeterminedwhenrepresentativesamplesofshinglesaresealedunderdefinedconditionsbeforetesting.ThecalculationsthatsupporttheClassesin4.1useseveralstandardbuildingenvironmentfactors.Theseincludethe3-swindgustexposurefromASCE-7,installationonCategoryIorIIbuildingsforallslopes,groundroughnessBorC,andinstallationonbuildings60fttallorless.Note28212;Theassumptionsusedinthecalculationsfortheclassesin4.1covertherequirementsforthemajorityoftheasphaltshingleroofsinstalled.Ifenvironmentalfactorsareoutsidethoseusedinthecalculationsfortheseclasses,suchasgroundroughnessD,buildingheightsgreaterthan60fttall,buildingusecategoriesIIIorIVandotherexposuresasdefinedbyASCE-7,othercalculationsarerequired.Consulttheshinglemanufacturerforthespecificshinglex2019;sDCp,EI,L,L1,andL2valuesneededtocompletethesecalculations.Thetesttodetermineupliftcoefficientsisconductedwithawindvelocityof15.6x00B1;1.3m/s(35x00B1;3mph).Researchdataobtainedduringthedevelopmentofthistestprocedure,aswellasstandardwindmodelingpractices,providesfordataextrapolationtootherwindspeeds.Inordertosimulatetheraisedshingleedgethatisinherentbehaviorunderhighwindexposure,shimsareinsertedunderthewindwardedgeoftheshingleasappropriatebasedonwindspeedandupliftrigidityoftheshinglebeinginvestigated.Thistestmethodprovidesameansofmeasuringshingleupliftrigiditywhichisusedtodeterminethecorrectshimthickness.Additionally,thistestmethodallowsfortheuseofadefaultvalueforupliftrigidity(EI)of7175N-mm2(2.5lbf-in.2),ifarigiditymeasurementisnotmade.ThisdefaultvalueisconservativesincethelowestEImeasuredinthedevelopmentofthisprogramwas14350N-mm2(5.0lbf-in.2).Note38212;Theentirefieldofwindengineeringisbasedonuseofsmall-scalemodelsinwindtunnelsusingwindspeedsmuchlowerthanthefull-scalevalues.BuildingCodespermittestingofthistypetoreplacetheanalyticalprovisionsoftheBuildingCodethroughtheprovisionsofASCE7.(SeeAppendixX1fordetailsandreferences.)1.1Thistestmethodcoverstheprocedureforcalculatingthewindresistanceofasphaltshingleswhenappliedinaccordancewiththemanufacturer''sinstructions,andsealedunderdefinedconditions.Shingledesignsthatdependoninterlockingorproductrigiditytoresistthewindcannotbeevaluatedusingthis......
【中国标准分类号】:Q17
【国际标准分类号】:91_060_20
【页数】:16P.;A4
【正文语种】:英语
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