Designation:C459/C459M−97(Reapproved2011)´1StandardTestMethodsforAsbestos-CementFlatProducts1ThisstandardisissuedunderthefixeddesignationC459/C459M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—UnitsinformationwaseditoriallycorrectedinJanuary2012.1.Scope1.1Thesetestmethodscoveronlyasbestos-cementflatsheets,roofingshingles,sidingshingles,andclapboards.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Warning—Breathingofasbestosdustishazardous.Asbestosandasbestosproductspresentdemonstratedhealthrisksforusersandforthosewithwhomtheycomeintocontact.Inadditiontootherprecautions,whenworkingwithasbestos-cementproducts,minimizethedustthatresults.Forinforma-tiononthesafeuseofchrysoltileasbestos,referto“SafeUseofChrysotileAsbestos:AManualonPreventiveandControlMeasures.”21.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Foraspecificsafetyhazard,see1.3.2.ReferencedDocuments2.1ASTMStandards:3E177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethods3.Terminology3.1Definitions:3.1.1deflection—thelineardistancethatatestspecimenbendsatthecenterfromnoloadtomaximumbreakingloadwhenloadedasabeamwiththeloadappliedequallyandsimultaneouslyatbothone-thirdpointsofthespan.3.1.2flexuralstrength—theaveragebreakingloadinnew-tons(orlbf)ofdriedspecimensloadedassimplebeamsonaspanof254mm[10in.]withtheloadappliedequallyandsimultaneouslyatbothone-thirdpointsofthespan.4...
