Designation:C1719−11(Reapproved2017)StandardTestMethodforInstalledPrecastConcreteTanksandAccessoriesbytheNegativeAirPressure(Vacuum)TestPriortoBackfill1ThisstandardisissuedunderthefixeddesignationC1719;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversproceduresfortestingprecastconcretetanks(andinstalledaccessories)usedforon-sitewastewatertreatment,greaseinterception,grit/oilseparation,waterstorage,orotherapplicationsrequiringwatertightcon-structionandinstallation.Thistestmethodusespartialvacuumtodemonstratetheintegrityoftheinstalledmaterialsandtheconstructionprocesses.1.2Thistestmethodisintendedtobeusedtodemonstratetheconditionoftheinstalledsystem(precastconcretetankandaccessories)priortobackfill.1.3Testingofthesystembeforebackfillisnecessarysoastoprecludeinadvertentstructuraloverloadingofthesystemcomponentsduringthetest.NOTE1—Vacuumtestcriteriapresentedinthistestmethodaresimilartothoseingeneraluse.ThetestandcriteriahavebeenwidelyandsuccessfullyusedintestingmanholesasspecifiedinTestMethodC1244.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards...
