Designation:E108−17AnAmericanNationalStandardStandardTestMethodsforFireTestsofRoofCoverings1ThisstandardisissuedunderthefixeddesignationE108;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisfire-test-responsestandardcoversthemeasurementoftherelativefirecharacteristicsofroofcoveringsexposedtosimulatedfiresourcesoriginatingoutsidethebuilding.Itisapplicabletoroofcoveringsintendedforinstallationoneithercombustibleornoncombustibleroofdeckswhenappliedasintendedforuse.Thefollowingtestmethodsareincluded:1.1.1Intermittentflameexposuretest.1.1.2Spreadofflametest.1.1.3Burningbrandtest.1.1.4Flyingbrandtest.1.1.5Raintest.1.2Threeclassesoffiretestexposurearedescribed:1.2.1ClassATestsareapplicabletoroofcoveringsthatareexpectedtobeeffectiveagainstseverefireexposure,affordahighdegreeoffireprotectiontotheroofdeck,donotslipfromposition,andarenotexpectedtopresentaflyingbrandhazard.1.2.2ClassBTestsareapplicabletoroofcoveringsthatareexpectedtobeeffectiveagainstmoderatefireexposure,affordamoderatedegreeoffireprotectiontotheroofdeck,donotslipfromposition,andarenotexpectedtopresentaflyingbrandhazard.1.2.3ClassCTestsareapplicabletoroofcoveringsthatareeffectiveagainstlightfireexposure,affordalightdegreeoffireprotectiontotheroofdeck,donotslipfromposition,andarenotexpectedtopresentaflyingbrandhazard.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandardisusedtomeasureanddescribetheresponseofmaterials,products,orassembliestoheatandflameundercontrolledlaboratoryconditions,butdoesnotbyitselfincorporateallfactorsrequiredforfirehazardorfireriskassessmentofthemater...
