Designation:D3737−12StandardPracticeforEstablishingAllowablePropertiesforStructuralGluedLaminatedTimber(Glulam)1ThisstandardisissuedunderthefixeddesignationD3737;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoverstheproceduresforestablishingallowablepropertiesforstructuralgluedlaminatedtimber.Includedaretheallowablestressesforbending,tensionandcompressionparalleltothegrain,horizontalshear,compres-sionperpendiculartothegrain,andradialtensionandcom-pressionincurvedmembers.Alsoincludedaremodulusofelasticityandmodulusofrigidity.1.2Thispracticeislimitedtothecalculationofallowablepropertiessubjecttothegivenproceduresfortheselectionandarrangementofgradesoflumberofthespeciesconsidered.1.3Requirementsforproduction,inspectionandcertifica-tionarenotincluded,butinordertojustifytheallowablepropertiesdevelopedusingproceduresinthispractice,manu-facturersmustconformtorecognizedmanufacturingstandards.RefertoANSI/AITCA190.1andCSAO122.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D9TerminologyRelatingtoWoodandWood-BasedProd-uctsD143TestMethodsforSmallClearSpecimensofTimberD198TestMethodsofStaticTestsofLumberinStructuralSizesD245PracticeforEstablishingStructuralGradesandRe-latedAllowablePropertiesforVisuallyGradedLumberD2395TestMethodsforDensityandSpecificGravity(Rela-tiveDensity)ofWoodandWood-BasedMaterialsD2555PracticeforEstablishingClearW...
