Designation:D7636/D7636M−11(Reapproved2019)StandardPracticeforSamplingandAnalysisofModifiedBitumenRoofSystems1ThisstandardisissuedunderthefixeddesignationD7636/D7636M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticeisforremovingspecimensfromexistingmodifiedbitumenroofmembranesforvisualassessmentandevaluationforabnormalitiesinthemembrane.Theroofmem-braneconsistsofoneormoreplies/sheetmaterialsinwhichatleastoneplyisamodifiedbitumen(MB)sheet,andwhichisinstalledwithoneormoreofthefollowingmethods:hotasphalt,heatwelding(openflametorchingorheatedair),coldadhesive,orself-adhesive.Theroofmembranemayconsistofoneormorepliesofthefollowing:1.1.1SBS(styrene-butadiene-styrene),APP(attacticpolypropylene),orotherpolymer,modifiedbitumensheetmaterials.1.1.2Anexposedmodifiedbitumensheetmaterial,thatis,amodifiedcapsheet,coveringmultiplelayersofbuilt-uproofing(BUR)plies.1.1.3Anyadhesiveorbitumencomponentusedtoinstalltheroofmembrane.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1079TerminologyRelatingtoRoofingandWaterproofing3.Terminology3.1Definitions—Fordefinitionsoftermsusedinthispractice,refertoTerminologyD1079.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1hybridmembranesystem,n—MB/BURroofmem-braneconsistingofamodi...
