Designation:C653−17StandardGuideforDeterminationoftheThermalResistanceofLow-DensityBlanket-TypeMineralFiberInsulation1ThisstandardisissuedunderthefixeddesignationC653;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidedescribesthecalculationandinterpolationofathermalresistancevalueforlow-densityblanket-typeinsula-tionmaterialataparticulardensityandthicknesshavingbeenselectedasrepresentativeoftheproduct.Itrequiresmeasuredvaluesofthisaveragedensityandthickness,aswellasapparentthermalconductivityvaluesdeterminedbyeitherTestMethodC177,C518,orC1114.1.2Thisguideappliestoadensityrangeformineral-fibermaterialofroughly6.4to48kg/m3(0.4to3.0lb/ft3).Itisprimarilyintendedtoapplytolow-density,mineral-fibermassinsulationbattsandblankets,exclusiveofanymembranefacings.Apparentthermalconductivitydatafortheseproductsarecommonlyreportedatameantemperatureof23.9°C(75°F)andahot-to-coldplatetemperaturedifferenceof27.8°C(50°F)or22.2°C(40°F).1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C167TestMethodsforThicknessandDensityofBlanketorBattThermalInsulationsC168TerminologyRelatingtoThermalInsulationC177TestMethodforSteady-StateHeatFluxMeasure-mentsandThermalTransmissionPropertiesbyMeansoftheGuarded-Hot-PlateApparatusC518TestMethodforSteady-StateThermalTransmissionPropertiesbyMeansoftheHeatFlowMeterApparatusC687PracticeforDeterminationofThermalResistanceofLoose-FillBuildingInsulationC1045PracticeforCalculatingThermalTransmissionProp-ertiesUnderSteady-StateConditionsC1114TestMethodforSteady-StateThermalTransmissionPropertiesbyMeansoft...
