Designation:D5456−14bStandardSpecificationforEvaluationofStructuralCompositeLumberProducts1ThisstandardisissuedunderthefixeddesignationD5456;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONStructuralcompositelumberisintendedforuseasanengineeringmaterialforavarietyofend-useapplications.Thecompositionofthelumbervariesbywoodspecies,adhesivecomposition,woodelementsize,shape,andarrangement.Toprovidetheintendedperformance,compositelumberproductsrequire:(1)anevaluationofthemechanicalandphysicalpropertiesandtheirresponsetoend-useenvironments,and(2)establishmentofandconformancetostandardperformancespecifica-tionsforquality.Procedurescontainedinthisspecificationarealsotobeusedforestablishingthedesignpropertiesandforcheckingtheeffectivenessofpropertyassignmentandqualityassuranceprocedures.Thequalityassurancesectionsinthisspecificationareintendedtoserveasabasisfordesigningquality-controlprogramsspecifictoeachproduct.Theobjectiveistoensurethatdesignvaluesestablishedinthequalificationprocessaremaintained.Thisspecificationisarrangedasfollows:SectionQualification6DeterminationofAllowableDesignStresses7IndependentInspection8QualityAssurance101.Scope1.1Thisspecificationrecognizesthecomplexityofstruc-turalgluedproducts.Consequently,thisspecificationcoversbothspecificproceduresandstatementsofintentthatsamplingandanalysismustrelatetothespecificproduct.1.2Thisspecificationwasdevelopedinthelightofcur-rentlymanufacturedproductsasdefinedin3.2.Materialsthatdonotconformtothedefinitionsarebeyondthescopeofthisspecification.AbriefdiscussionisfoundinAppendixX2.1.3Detailsofmanufacturingproceduresarebeyondthescopeofthisspecification.NOTE1—Thereissomepotentialformanufacturingvariablestoaffectthepropertiesofmembersthatareloadedforsustainedperiodsoftime.Usersofthisspecificationar...
