【英文标准名称】:StandardPracticeforEstablishingCharacteristicValuesforFlexuralPropertiesofStructuralGluedLaminatedTimberbyFull-ScaleTesting
【原文标准名称】:用足尺试验对胶合木结构的弯曲特性建立特性值的标准实施规程
【标准号】:ASTMD7341-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D07.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:bending;characteristicvalue;flexural;flexure;full-scale;glulam;laminated;lay-up;modulus;timber;Flexuraltesting;Full-scaletesting;Gluedlaminatedtimber(glulam);Timber
【摘要】:Full-scalebendingtestingisaneffectivewaytodetermineflexuralpropertiesofstructuralgluedlaminatedtimber(glulam)beams.However,testingoflargeglulammembersiscostprohibitive.Mathematicalmodels,whenconfirmedbyfull-scaletestresults,areusefultoolstoassignflexuralpropertiesforglulam.Thispracticeprovidesguidelinesforsamplingandtestingfull-scaleglulambeamstodeterminetheirflexuralpropertiesandtovalidatemathematicalmodelsintendedforuseinassigningflexuraldesignvalues.1.1Thispracticedescribesproceduresforfullscaletestingofstructuralgluedlaminatedtimber(glulam)todetermineorverifycharacteristicvaluesusedtocalculateflexuraldesignproperties.Guidelinesaregivenfor:(1)testingindividualstructuralgluedlaminatedtimberlay-ups(withnomodeling),(2)testingindividualglulamcombinations(withlimitedmodeling),and(3)validatingmodelsusedtopredictcharacteristicvalues.1.2Thispracticeislimitedtoproceduresforestablishingflexuralproperties(ModulusofRupture,MOR,andModulusofElasticity,MOE).Someoftheprinciplesforsamplingandanalysispresentedmaybeapplicabletootherproperties.However,otherpropertiesmayrequireadditionaltestingconsiderationsthatarebeyondthescopeofthispractice.1.3ThispracticeisnotintendedtosupersedetheprovisionsofPracticeD3737,butprovidesanalternativemethodforestablishingcharacteristicvalues.Lay-upcombinationsdevelopedinaccordancewithPracticeD3737arenotrequiredtobegovernedbythisstandard.Note18212;ThemodelsdescribedbyPracticeD3737havebeendevelopedandmodifiedbasedonmorethan50yearsofexperienceandmanytestprograms.Insomecases,however,itmaybedesirabletodevelopanewmodelbasedonotherinputpropertiesorusinglumbermaterialsorgradesnotcoveredbythatstandard.1.4Detailsofproduction,inspection,andcertificationarebeyondthescopeofthisdocument.However,fortestresultstoberepresentativeofproduction,qualitycontrolsystemsshallbeinplacetoensureconsistentquality.ManufacturingshallconformtorecognizedmanufacturingstandardssuchasANSI/AITCA190.1orCSAO122.1.5AdjustmentstocharacteristicvaluestodeterminereferencevaluesfordesignshallbeinaccordancewithPracticeD2915forallowablestressdesign(ASD)orSpecificationD5457forloadandresistancefactordesign(LRFD).1.6AdjustmentstoASDreferencevaluesforend-useconditionsintendedfordesignpurposesshallbeperformedinaccordancewithPracticeD3737.ThesameadjustmentfactorsshallapplytoLRFDreferencevalues,exceptthattheASDloaddurationfactorshallbereplacedbyanappropriateLRFDtimeeffectfactorasdeterminedinaccordancewithrecognizedindustrypractice.1.7Thevaluesstatedininch-poundunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P23
【国际标准分类号】:79_060_99
【页数】:5P.;A4
【正文语种】:英语


【英文标准名称】:DesignationofShapesandSizesofGraphiteElectrodes
【原文标准名称】:石墨电极形状和尺寸的名称与符号
【标准号】:ASTME130-1987
【标准状态】:作废
【国别】:美国
【发布日期】:1987
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:电极;量值;名称与符号;金属;石墨;形状;表面;精整
【英文主题词】:finishes;metals;shape;size;graphite;electrodes;surfaces;designations
【摘要】:
【中国标准分类号】:Q51
【国际标准分类号】:29_220_00
【页数】:10P;A4
【正文语种】:英语