Designation:C1597M−04(Reapproved2009)´1StandardSpecificationforGypsumWallboard(HardMetricSizes)1ThisstandardisissuedunderthefixeddesignationC1597M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.´1NOTE—SpecificationC36/C36MwasreplacedwithSpecificationC1396/C1396Meditoriallyin1.2andReferencedDocumentsinSeptember2009.1.Scope1.1Thisspecificationcoversgypsumwallboardwhichisdesignedtobeusedforwalls,ceilings,orpartitionsandaffordsasurfacesuitabletoreceivedecoration.NOTE1—SpecificationC840containsapplicationproceduresforgyp-sumwallboard.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.Forgypsumwallboardproducedtoinch-poundunitsseeSpecificationC1396/C1396M.1.3Thetextofthisstandardreferencesnotesandfootnotesthatprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.2.ReferencedDocuments2.1ASTMStandards:2C11TerminologyRelatingtoGypsumandRelatedBuildingMaterialsandSystemsC473TestMethodsforPhysicalTestingofGypsumPanelProductsC645SpecificationforNonstructuralSteelFramingMem-bersC840SpecificationforApplicationandFinishingofGypsumBoardC1264SpecificationforSampling,Inspection,Rejection,Certification,Packaging,Marking,Shipping,Handling,andStorageofGypsumPanelProductsC1396/C1396MSpecificationforGypsumBoardE84TestMethodforSurfaceBurningCharacteristicsofBuildingMaterialsE96/E96MTestMethodsforWaterVaporTransmissionofMaterialsE119TestMethodsforFireTestsofBuildingConstructionandMaterials3.Terminology3.1DefinitionsoftermsshallbeinaccordancewithTermi-nologyC11.4.MaterialsandManufacture4.1Gypsumwallboardshallconsistofanoncombustiblecore,essentiallygypsum,surfacedwithpaperbondedtothecore.4.2Foilbackedgypsumwallboardshallconsistofgypsumwallboardwithala...
