Designation:D4068−15AnAmericanNationalStandardStandardSpecificationforChlorinatedPolyethylene(CPE)SheetingforConcealedWater-ContainmentMembrane1ThisstandardisissuedunderthefixeddesignationD4068;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversflexiblechlorinatedpolyethyl-ene(CPE)sheetingwhichisusedwithoutmastic,bedding,orcoatingforconstructionofconcealedwater-containmentmem-branesinapplicationswherethereispotentialforcostlysecondarydamagefromleakage,andwhereverylong-termreliableperformanceisessential.Examplesarefountains,pools,planters,showerandsafepans,tiletubs,andsimilarinstallationswherethemembraneisinaccessibleoncecon-structioniscomplete.Includedarerequirementsforcomposition,strengthandtoughness,testmethods,workman-shipcriteria,andmethodsofmarking.1.2Manufacturershavetheoptiontouserecycledmaterialsinthisproduct.RecycledmaterialsmustbeinaccordancewiththerequirementsinSection4.1.3Thetestmethodsusedtocharacterizethesheetingareintendedtoensurequalityandperformanceandarenotnecessarilyadequatefordesignpurposes.Testmethodshavebeenselectedtobeconductedprimarilywithliquidsthatsimulatetheenvironmentstowhichthemembranewillbesubjectedduringactualinstallationanduse.1.4Thisspecificationdoesnotcoverwater-containmentmembranesexposedinusetoultravioletlightordirectsun-light.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.NOTE1—ThereisnoknownISOequivalenttothisstandard.1.6Thefollowingsafetyhazardscaveatpertainsonlytothetestmethodportion,Section14,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablisha...
