Designation:C630/C630M–03e1StandardSpecificationforWater-ResistantGypsumBackingBoard1ThisstandardisissuedunderthefixeddesignationC630/C630M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.e1NOTE—Thewordrating(s)wasaddedtothetermfireresistancethroughouteditoriallyOctober2004.1.Scope*1.1Thisspecificationcoverswater-resistantgypsumback-ingboardthatisdesignedprimarilytobeusedasabasefortheapplicationofceramicorplastictileonwallsorceilings.Thisproductisalsosuitablefordecoration.NOTE1—SpecificationC840containsapplicationproceduresforwater-resistantgypsumbackingboard.1.2Thevaluesstatedineitherinch-poundunitsorSI(metric)unitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemshallbeusedindependentoftheother.Valuesfromthetwosystemsshallnotbecombined.1.3Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.2.ReferencedDocuments2.1ASTMStandards:2C11TerminologyRelatingtoGypsumandRelatedBuild-ingMaterialsandSystemsC473TestMethodsforPhysicalTestingofGypsumPanelProductsC645SpecificationforNonstructuralSteelFramingMem-bersC840SpecificationforApplicationandFinishingofGyp-sumBoardC1264SpecificationforSampling,Inspection,Rejection,Certification,Packaging,Marking,Shipping,Handling,andStorageofGypsumBoardE11TestMethodsforFireTestsofBuildingConstructionandMaterials3.Terminology3.1Definitionsusedinthisspecificationshallbeinaccor-dancewithTerminologyC11.4.MaterialsandManufacture4.1Water-resistantgypsumbackingboardshallconsistofanoncombustiblewater-resistantcore,essentiallygypsum,sur-facedonboththefaceandbackoftheboardwithwaterrepel-...
