Designation:A746−09(Reapproved2014)StandardSpecificationforDuctileIronGravitySewerPipe1ThisstandardisissuedunderthefixeddesignationA746;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcovers4to64-in.ductileirongravitysewerpipecentrifugallycastwithpush-onjoints.Thisspeci-ficationmaybeusedforpipewithothertypesofjoints,asmaybeagreeduponatthetimeofpurchase.1.2Thisspecificationcoverstrenchloaddesignproceduresforbothcement-linedpipeandflexible-linedpipe.Maximumdepthofcovertablesareincludedforbothtypesoflinings.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.2.ReferencedDocuments2.1ASTMStandards:2D2487PracticeforClassificationofSoilsforEngineeringPurposes(UnifiedSoilClassificationSystem)D3282PracticeforClassificationofSoilsandSoil-AggregateMixturesforHighwayConstructionPurposesE8TestMethodsforTensionTestingofMetallicMaterialsE23TestMethodsforNotchedBarImpactTestingofMe-tallicMaterials2.2ANSI/AWWAStandards:C104/A21.4CementMortarLiningforDuctile-IronPipeandFittingsforWater3C111/A21.11Rubber-GasketJointsforDuctile-IronPres-surePipeandFittings3C150/A21.50ThicknessDesignofDuctile-IronPipe3C600InstallationofDuctile-IronWaterMainsandTheirAppurtenances2.3ASCEStandards:ManualsandReportsonEngineeringPractice,No.37,(WCPFManualofPracticeNo.9).“DesignandConstructionofSanitaryandStormSewers”42.4AASHTOStandard:AASHTOT-99StandardMethodofTestfortheMoisture-DensityRelationsofSoilsUsinga5.5lb(2.5kg)Rammeranda12in.(305mm)Drop3.Terminology3.1Symbols:3.1.1A—outsideradiusofpipe,ft5D24Sinmetres5D2000D3.1.2a—conversionfactor,lb/ft2topsi=144(kN/m2tokPa=1)3.1.3B—1.5ft(0.457m)3.1.4b—Effectivepipelength:36in.(0.914m)3.1.5C—su...
