Designation:C37/C37M–01e1StandardSpecificationforGypsumLath1ThisstandardisissuedunderthefixeddesignationC37/C37M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.e1NOTE—Thewordrating(s)wasaddedtothetermfireresistancethroughouteditoriallyOctober2004.1.Scope*1.1Thisspecificationcoversplainandfoil-backedtypesofgypsumlathwhichisdesignedtobeusedasabaseforapplicationofgypsumplaster(seeSpecificationC28).NOTE1—SpecificationC841containsapplicationproceduresforinte-riorlathingandfurring,andSpecificationC842containsapplicationproceduresforinteriorgypsumplaster.1.2Thevaluesstatedineitherinch-poundorSI(metric)unitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemshallbeusedindependentoftheother.Valuesfromthetwosystemsshallnotbecombined.1.3Thetextofthisstandardreferencesnotesandfootnotesthatprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.2.ReferencedDocuments2.1ASTMStandards:C11TerminologyRelatingtoGypsumandRelatedBuild-ingMaterialsandSystems2C28SpecificationforGypsumPlasters2C473TestMethodsforPhysicalTestingofGypsumPanelProducts2C841SpecificationforInstallationofInteriorLathingandFurring2C842SpecificationforApplicationofInteriorGypsumPlaster2C1264SpecificationforSampling,Inspection,Rejection,Certification,Packaging,Marking,Shipping,Handling,andStorageofGypsumBoard2E96TestMethodsforWaterVaporTransmissionofMate-rials3E119TestMethodsforFireTestsofBuildingConstructionandMaterials43.Terminology3.1DefinitionsoftermsshallbeinaccordancewithTermi-nologyC11.4.MaterialsandManufacture4.1Plaingypsumlathshallconsistofanoncombustiblecore,essentiallygypsum,surfacedwithpaperbondedto...
