JB/DQ 4539-1989 LW8-Q1系列转换开关

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【英文标准名称】:StandardPracticeforCalculatingtheSuperimposedLoadonWood-frameWallsforStandardFire-ResistanceTests
【原文标准名称】:计算标准耐火试验用木框架墙超强荷载的标准实施规程
【标准号】:ASTMD6513-2008
【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】:D07.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:fireendurance;fireresistance;superimposedload;wallassembly;woodstuds;Fireendurancerating;Firetesting--buildingmaterials;Loadingtests--buildingconstructions/materials;Superimposedloadtestiing;Walls;Woodframeconstructions
【摘要】:TestMethodsE119andE1529,andotherstandardfireresistancetestmethodsspecifythatthroughoutexposurestofireandthehosestream,aconstantsuperimposedaxialloadbeappliedtoaload-bearingtestspecimentosimulateamaximumloadcondition.Theyspecifythatthissuperimposedloadshallbeasnearlyaspracticablethemaximumloadallowedbydesignundernationallyrecognizedstructuraldesigncriteria.Forthispractice,thenationallyrecognizedstructuraldesigncriteriaistheNationalDesignSpecificationforWoodConstruction(NDS).Alternatively,thestandardfireresistancetestmethodsshallbeconductedbyapplyinganaxialloadthatislessthanthemaximumallowableaxialloadasaddressedbytheNDSandthispractice,butthesetestsshallbeidentifiedinthetestreportasbeingconductedunderrestrictedloadconditions.Thesuperimposedaxialload,aswellasthesuperimposedaxialloadasapercentageofthemaximumallowableaxialdesignloadasaddressedbytheNDSandthispracticeshallbeincludedinthetestreport.Thispracticedescribesproceduresforcalculatingthesuperimposedaxialloadtobeappliedinstandardfireresistancetestsofwood-framewallassemblies.Statementsineitherthefireresistancetestmethodstandardorthenationallyrecognizedstructuraldesignstandardsupercedeanyproceduresdescribedbythispractice.TheNDSshallbeconsultedtoensurecalculationsareincompliancewithallapplicableprovisionsofthatdocument.1.1Thispracticecoversproceduresforcalculatingthesuperimposedaxialloadrequiredtobeappliedtoload-bearingwood-framewallsthroughoutstandardfire-resistanceandfireandhose-streamtests.1.2Thecalculationsdeterminethemaximumloadallowedbydesignforwood-framewallassembliesundernationallyrecognizedstructuraldesigncriteria.1.3Thispracticeisonlyapplicabletothosewood-frameassembliesforwhichthenationallyrecognizedstructuraldesigncriteriaistheNationalDesignSpecificationforWoodConstruction(NDS).1.4Thesystemofunitstobeusedisthatofthenationallyrecognizedstructuraldesigncriteria.FortheNDS,theunitsareinch-pound.1.5Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C82
【国际标准分类号】:91_060_10
【页数】:5P.;A4
【正文语种】:英语


MIL-PRF-20K (SUPPLEMENT 1), PERFORMANCE SPECIFICATION CAPACITOR, FIXED, CERAMIC DIELECTRIC, (TEMPERATURE COMPENSATING), ESTABLISHED RELIABILITY AND NON-ESTABLISHED RELIABILITY, GENERAL SPECIFICATION FOR (14 NOV 2003) [SUPERSEDING MIL-C-20G]., This supplement forms a part of MIL-PRF-20K, dated 14 November 2003.