Designation:D6451/D6451M−99(Reapproved2021)StandardGuideforApplicationofAsphalt-BasedProtectionBoard1ThisstandardisissuedunderthefixeddesignationD6451/D6451M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidelistsminimumapplicationandinstallationrequirementsforsemi-rigidprotectionboardwhenusedasprotectionforbelow-gradeorbelowwearingsurface(likeplazadecks)waterproofing.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,seeSection8.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1079TerminologyRelatingtoRoofingandWaterproofingD5957GuideforFloodTestingHorizontalWaterproofingInstallations3.Terminology3.1Definitions—Fordefinitionsoftermsrelatingtowaterproofing,seeTerminologyD1079.4.SignificanceandUse4.1Thisguideoutlinesgeneralproceduresforthestorageandapplicationofsemi-rigidprotectionboardtobelow-gradeandbelowwearingsurfacewaterproofing.Theproperapplica-tionisnecessarytopreventdamagetothewaterproofingmembraneduringbackfilling,paving,orotherconstructionoperations,aswellastomin...
