Designation:C444M−17StandardSpecificationforPerforatedConcretePipe(Metric)1ThisstandardisissuedunderthefixeddesignationC444M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thisspecificationcoversperforatedconcretepipein-tendedtobeusedforunderdrainage.1.2ThisspecificationistheSIcompaniontoSpecificationC444.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2C822TerminologyRelatingtoConcretePipeandRelatedProducts3.Terminology3.1Definitions—Fordefinitionsoftermsrelatingtoconcretepipe,seeTerminologyC822.4.Classification4.1Pipemanufacturedtothisspecificationshallbeoftwoclasses,Type1andType2,describingtwoarrangementsofperforationsforpipemanufacturedtothestandardspecifica-tionsforplainorreinforcedconcretepipe,andtheirclassifi-cations.4.1.1Type1perforatedpipeshallhavecircularperforationsconformingto6.1andTable1.4.1.2Type2perforatedpipeshallhaveslottedperforationsconformingto6.2andTable2.4.1.3Itisintendedthatperforatedpipeshallbespecifiedbyreferencetothisspecificationandthespecificationforthetypeandclassofpipedesired.NOTE1—Example:“PerforatedconcretepipeshallconformtotherequirementsofSpecificationC444MType2,andallapplicablerequire-mentsofSpecificationC14M,Class2.”5.BasisofAcce...
