Designation:C551/C551M−07(Reapproved2011)´1StandardSpecificationforAsbestos-CementFiberboardInsulatingPanels1ThisstandardisissuedunderthefixeddesignationC551/C551M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—UnitsinformationwaseditoriallycorrectedinJanuary2012.1.Scope1.1Thisspecificationcoversasbestos-cementinsulatingpanelsconsistingofacoreofinsulatingfiberboardsandwichedbetween,andbondedto,twosheetsofasbestos-cementfacingboard.Asbestos-cementinsulatingpanelsaredesignedforexteriorandinteriorwalls,partitions,curtainwalls,roofdecks,andfordecorativepurposes.1.2Allmeasurementsandtestsnecessaryfordeterminingtheconformityofasbestos-cementinsulatingpanelswiththisspecificationaremadeinaccordancewiththemethodscoveredinSection9.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.4Warning—Breathingofasbestosdustishazardous.Asbestosandasbestosproductspresentdemonstratedhealthrisksforusersandforthosewithwhomtheycomeintocontact.Inadditiontootherprecautions,whenworkingwithasbestos-cementproducts,minimizethedustthatresults.Forinforma-tiononthesafeuseofchrysoltileasbestos,referto“SafeUseofChrysotileAsbestos:AManualonPreventiveandControlMeasures.”21.5Thefollowingsafetyhazardscaveatpertainsonlytothetestmethodportion,Section9,ofthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimita-tionspriortouse.Seeforaspecifichazardwarning.2.ReferencedDocuments2.1ASTMStandards:3C...
