Designation:E2749−15aAnAmericanNationalStandardStandardPracticeforMeasuringtheUniformityofFurnaceExposureonTestSpecimens1ThisstandardisissuedunderthefixeddesignationE2749;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThisstandardprovidesgeneralprinciplesformeasuringtheuniformityofthefurnaceexposureonspecimenstestedinaccordancewithTestMethodsE119,E814,E1529,E1725,E1966andE2336.1.2Thispracticespecifiesthematerialsandtheconstructionrequirementsforastandardizedtestspecimenusedtoprovideamountingsurfacefortheinstrumentationthatmeasuresfurnaceexposure.1.3Theinstrumentationrecordstemperatures,pressuredif-ferentialsandoxygencontentnearthesurfaceofthetestspecimen.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theunitsgiveninparenthesesareforinformationonly.1.5Thisstandardisusedtomeasureanddescribetheresponseofmaterials,products,orassembliestoheatandflameundercontrolledconditions,butdoesnotbyitselfincorporateallfactorsrequiredforfirehazardorfireriskassessmentofthematerials,products,orassembliesunderactualfireconditions.1.6Firetestingisinherentlyhazardous.Adequatesafe-guardsforpersonnelandpropertyshallbeemployedinconductingthesetests.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C1396/C1396MSpecificationforGypsumBoardE119TestMethodsforFireTestsofBuildingConstructionandMaterialsE176TerminologyofFireStandardsE814TestMethodforFireTestsofPenetrationFirestopSystemsE1529TestMethodsforDeterminingEffectsofLargeHy-drocarbonPoolFiresonStructuralMembersandAssem-bliesE1725TestMethodsforFireTestsofFire-ResistiveBarrierSystemsforEl...
