ASTMD3894BBm07595300032743BmAMERICANSOCIETYFORTESTINGANDMATERIALS1916RaceSt.,Philadelphla,Pa.19103ReprintedffomtheAnnualBookofASTMStandards,CopyrightASTMIfnoflistedinthecurrentcomblnedIndex.willappearinthenextedition.4[TbDesignation:D3894-88StandardTestMethodforEvaluationofFireResponseofRigidCellularPlasticsUsingaSrnailCornerConfiguration7Thisstandardis¡shedunderthefixeddesignationD3894;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.-.1.Scope-1.1Thistestmethoddescribesasmall-scalelaboratoryprocedureusedtoobserveandmeasuretheresponseofrigidcellularplastics,underspecificexposedorprotectedcondi-tions,toastandardizedheatandflameexposure.Measure-mentsofflamefravel,maximumtemperature,andmaterialdamagearemadeandreported.Mechanicalfailuresfrom.cracking,spalling,lossofadhesion,andotherfireresponsefactorsusefulinscreeningforprotectivePUWQS~Smafaisobenoted,>.1.2Thistestmethodhasbeenfoundusefulinscreeningrigidcellularplasticsinexposedorprojectedconditions,usingstandardconfigurations(twoadjacentwalls;twoadja-centwallsandceiling)ofsimilarmaterialsinordertopredicttheperformanceofsuchmaterialsinaFactoryMutualFull-scaleComerWaiiTest.1.3Thistestmethodisintendedforresearchknddevelop-mentorforinternalqualitycontrolpurposes.Itshouldbeusedtomeasureanddescribethepropertiesofmaterials,products,orassembliesinresponsetoheatandflameundercontrolledlaboratoryconditionsandshouldnotbeusedtodescribeorappraisethefirehazardorfireriskofmaterials,.products,orassembliesunderactualfireconditions:How-ever,resultsofthistestmaybeusedaselementsofafireriskassessmentwhichtakesintoaccountallofthefactorswhicharepertinenttoanassessmentofthefirehazardofaparticularenduse.Itisnotintendedasabasisforratingsusedinmaterialspecificationsorforbuildingcodepurposes.NOTE1:Warning-Duringthecourseofcombustion,gasesor...
