Designation:E119−15AnAmericanNationalStandardStandardTestMethodsforFireTestsofBuildingConstructionandMaterials1ThisstandardisissuedunderthefixeddesignationE119;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.INTRODUCTIONTheperformanceofwalls,columns,floors,andotherbuildingmembersunderfire-exposureconditionsisanitemofmajorimportanceinsecuringconstructionsthataresafe,andthatarenotamenacetoneighboringstructuresortothepublic.Recognitionofthisisregisteredinthecodesofmanyauthorities,municipalandother.Itisimportanttosecurebalanceofthemanyunitsinasinglebuilding,andofbuildingsoflikecharacteranduseinacommunity;andalsotopromoteuniformityinrequirementsofvariousauthoritiesthroughoutthecountry.Todothisitisnecessarythatthefire-resistivepropertiesofmaterialsandassembliesbemeasuredandspecifiedaccordingtoacommonstandardexpressedintermsthatareapplicablealiketoawidevarietyofmaterials,situations,andconditionsofexposure.Suchastandardisfoundinthetestmethodsthatfollow.Theyprescribeastandardexposingfireofcontrolledextentandseverity.Performanceisdefinedastheperiodofresistancetostandardexposureelapsingbeforethefirstcriticalpointinbehaviorisobserved.Resultsarereportedinunitsinwhichfieldexposurescanbejudgedandexpressed.Thetestmethodsmaybecitedasthe“StandardFireTests,”andtheperformanceorexposureshallbeexpressedas“2-h,”“6-h,”“1⁄2-h,”etc.Whenafactorofsafetyexceedingthatinherentinthetestconditionsisdesired,aproportionalincreaseshouldbemadeinthespecifiedtime-classificationperiod.1.Scope*1.1Thetestmethodsdescribedinthisfire-test-responsestandardareapplicabletoassembliesofmasonryunitsandtocompositeassembliesofstructuralmaterialsforbuildings,includingloadbearingandotherwallsandpartitions,columns,girders,beams,slab...
