Designation:D7176−06(Reapproved2018)StandardSpecificationforNon-ReinforcedPolyvinylChloride(PVC)GeomembranesUsedinBuriedApplications1ThisstandardisissuedunderthefixeddesignationD7176;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoverspolyvinylchloride(PVC)flex-iblesheetingwhichisusedforconstructionofconcealedcontainmentmembranes.Examplesarepondsandlakes,canals,reservoirs,landfillliners,coversandclosures,orsimilarinstallationswherethemembraneisinaccessibleoncetheconstructioniscomplete.Includedarerequirementsformate-rialsandsheeting,testmethods,workmanshipcriteria,andmethodsofmarking.Thisspecificationcoversunreinforcedflexiblesheetmadefrompolyvinylchloride(PVC)resinastheprimarypolymerintendedforuseingeomembranes.ThisspecificationcoversPVCsheet0.25mmthrough1.5mmthickness(0.010in.through0.060in.),typicallyusedforgeomembranelinings.1.2ReworkedmaterialsmaybeusedinthisproductinaccordancewiththerequirementsinSection5.1.3Thetestsareintendedtoensurequalityandperformance,andarenotintendedfordesignpurposes.Testshavebeenselectedtobeconductedprimarilywithliquidsthatsimulatetheenvironmenttowhichthemembranewillbesubjectedduringactualuse.Thetestandpropertylimitsusedtocharacterizethesheetarevaluesintendedtoensuremini-mumqualityfortheintendedpurpose.In-placedesigncriteriasuchasmaterialcompatibility,chemicalresistance,amongothers,arefactorsthatshallbeconsideredbutarebeyondthescopeofthisspecification.1.4Thevaluesstatedinmetricunitsaretoberegardedasthestandard.Thevaluesstatedinparentheses(English)areforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatory...
