Designation:C1381/C1381M−97(Reapproved2013)StandardSpecificationforMoldedGlassFiberReinforcedGypsumParts1ThisstandardisissuedunderthefixeddesignationC1381/C1381M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversmoldedglassfiberreinforcedgypsum(GRG)parts,whicharenonload-bearing,thin-shell,ornamentalshapesforarchitecturalembellishmentofinteriorbuildingconstruction.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Theinformationpresentedreferstothemoldedsurfaceofthepart.1.4Thetextofthisstandardreferencesfootnotes,whichprovideexplanatorymaterial.Thesefootnotesshallnotbeconsideredasrequirementsofthestandard.2.ReferencedDocuments2.1ASTMStandards:2C11TerminologyRelatingtoGypsumandRelatedBuildingMaterialsandSystemsC1355/C1355MSpecificationforGlassFiberReinforcedGypsumComposites3.Terminology3.1Definitions—DefinitionsoftermsshallbeinaccordancewithTerminologyC11.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1controlthickness,n—thethicknessoftheGRGpartwhereabuttingotherGRGparts,otherproductsoratfasteningpoints.3.2.2embedments,n—materialsencapsulatedintothepartforthepurposeofsuspension,attachment,andstiffening.3.2.3finishsurface,n—asurfaceagainstamold.3.2.4GRGpart,n—anindividualmoldedcomponentusedasarchitecturalembellishment.3.2.5GRGproduct,n—combinationofGRGpartsusedasarchitecturalembellishment.3.2.6mock-up,n—apresentationassemblyofGRGpartsdefinedbythepurchaseagreement.3.2.7partthickness,n—thicknessofapartatanymeasure-mentpoint.4.MaterialsandManufacture4.1Materials—GRG...
