Designation:C1618M−13StandardTestMethodforConcreteSanitarySewerPipebyNegative(Vacuum)orPositiveAirPressure(Metric)1ThisstandardisissuedunderthefixeddesignationC1618M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversproceduresfortestingofprecastconcretepipesections,priortodelivery,wheremaximumfieldleakageratesarespecified.1.2Testsdescribedinthisstandardareintendedtobeusedatthepointofmanufactureoftheconcretepipeandarenotintendedfortestinginstalledpipe(forfieldtestsseePracticesC924,C969,andC1214).Theuserofthisspecificationisadvisedthatindividualormultiplepipesectionsmaybetestedforthepurposeoftestingthepipebarrelandadditionallythejointsinstraightalignmentwhenmultiplepipesectionsaretested.1.3Testtimesarebasedonleakageratesandthereforeareproportionalonlytothepipediameterandareconstantforanylengthoftestpipeorpipeline.1.4Testtimestabulatedandtherateofairlossinthisstandardarebasedonsuccessfultestingofinstalledpipelines.However,sinceairandwaterhavedifferentphysicalproperties,retestsofsomepipelinesnotmeetingfieldairtestshavebeensuccessfulwhentestedwithwater.Theleakageratesof0.0017CFM/ft2and0.0003CFM/ft2,weredeterminedempiricallyasthemaximumsforpipetomeetthe50and200gal/(in.ofinternaldiameter)(mileofsewer)(24h)testrates,respectively1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.NOTE1—Theavailabilityofthistestprocedureforconcretepipevariesfromlocationtolocation.Checkwithlocalsupplier(s)foravailabilityandrecommendations.1.6Thisstandarddoesnotpurporttoaddressallthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishtheappropriatesafetyandhealthpracticesandtodeterminetheapplicabilityofregulatorylimitationspriortoitsuse.SeeSection6forspecificsaf...
