Designation:C924–02StandardPracticeforTestingConcretePipeSewerLinesbyLow-PressureAirTestMethod1ThisstandardisissuedunderthefixeddesignationC924;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thispracticecoversproceduresfortestingconcretepipesewerlines,whenusingthelow-pressureairtestmethodtodemonstratetheintegrityoftheinstalledmaterialandtheconstructionprocedures.Thispracticeisusedfortesting4to24-in.circularconcretepipesewerlinesutilizinggasketedjoints.1.2Thispracticeisalsousedasapreliminarytesttoenabletheinstallertodemonstratetheconditionofthelinepriortobackfill.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse(seeSection6,SafetyPrecautions).1.4AcompletemetriccompaniontoPracticeC924hasbeendeveloped—C924M;therefore,nometricequivalentsarepresentedinthispractice.NOTE1—Theuserofthispracticeisadvisedthatairtestcriteriapresentedinthispracticearesimilartothoseingeneraluse.Thetestandcriteriahavebeenusedwidelyandsuccessfullyintestingsmallerdiameterpipe,butadditionaldataarerequiredtoconfirmthesafetyandapplica-bilityordevelopcriteriaforpipelargerthan24in.indiameter.Largerpipewillbeacceptedmoreconvenientlybyvisualinspectionandindividualjointtesting.NOTE2—Theuserofthispracticeisadvisedthatnocorrelationhasbeenfoundbetweenairlossandwaterleakage.2.ReferencedDocuments2.1ASTMStandards:C822TerminologyRelatingtoConcretePipeandRelatedProducts2C969PracticeforInfiltrationandExfiltrationAcceptanceTestingofInstalledPrecastConcretePipeSewerLines23.Terminology3.1Definitions—Fordefinitionsoftermsrelatingtocon-cretep...
