Designation:C412M−15StandardSpecificationforConcreteDrainTile(Metric)1ThisstandardisissuedunderthefixeddesignationC412M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thisspecificationcoversconcretedraintilewithinter-naldiametersfrom100to900mm,thatareintendedtobeusedforsurfaceandsubsurfacedrainage.1.2ThisspecificationisthemetriccounterpartofSpecifi-cationC412.NOTE1—Thisspecificationisamanufacturingandpurchasespecifica-tiononlyanddoesnotincluderequirementsforbedding,backfill,ortherelationshipbetweenfieldloadconditionandthestrengthclassificationofdraintile.However,experiencehasshownthatthesuccessfulperformanceoftheproductdependsupontheproperselectionoftheclassofdraintile,typeofbeddingandbackfill,andcarethattheinstallationconformstotheconstructionspecifications.Theowneriscautionedthathemustcorrelatethefieldrequirementswiththeclassofdraintilespecifiedandprovidefororrequireinspectionattheconstructionsite.2.ReferencedDocuments2.1ASTMStandards:2C33/C33MSpecificationforConcreteAggregatesC150/C150MSpecificationforPortlandCementC260/C260MSpecificationforAir-EntrainingAdmixturesforConcreteC494/C494MSpecificationforChemicalAdmixturesforConcreteC497MTestMethodsforConcretePipe,ManholeSections,orTile(Metric)C595/C595MSpecificationforBlendedHydraulicCementsC618SpecificationforCoalFlyAshandRaworCalcinedNaturalPozzolanforUseinConcreteC822TerminologyRelatingtoConcretePipeandRelatedProductsC989/C989MSpecificationforSlagCementforUseinConcreteandMortarsC1017/C1017MSpecificationforChemicalAdmixturesforUseinProducingFlowingConcreteC1116/C1116MSpecificationforFiber-ReinforcedConcreteC1602/C1602MSpecificationforMixingWaterUsedintheProductionofHydraulicCementConcrete3.Terminology3.1Definitions—Fordef...