ACI346-01supersedesACI346-90(Reapproved1997)andbecameeffectiveSep-tember17,2001.Copyright©2001,AmericanConcreteInstitute.Allrightsreservedincludingrightsofreproductionanduseinanyformorbyanymeans,includingthemakingofcopiesbyanyphotoprocess,orbyelectronicormechanicaldevice,printed,written,ororal,orrecordingforsoundorvisualreproduc-tionorforuseinanyknowledgeorretrievalsystemordevice,unlesspermissioninwritingisobtainedfromthecopyrightproprietors.346-1SpecificationforCast-in-PlaceConcretePipeACI346-01Theengineerorarchitectmaymakethesespecificationsapplicabletoanyprojectbycitingthemintheprojectspecifications.Supplementscanbemadebydesignatingorspecifyingindividualprojectrequirementsasneeded.ThisdocumentmustbeusedinconjunctionwithACI301.Inclusionofthisdocu-mentinaprojectspecification,withmandatorychecklistitems,willprovidenecessarydefaultvaluesformandatorychecklistitemsinACI301.Keywords:cast-in-placeconcretepipe(CIPCP);circumferentialcracking;concretepipe;longitudinalcracking;no-jointpipeCONTENTSForeword,p.346-1Preface,p.346-1Part1—General,p.346-21.1—Summary1.2—Referencedstandards1.3—Definitions1.4—Systemdescription1.5—SubmittalsPart2—Products,p.346-32.1—ConcretePart3—Execution,p.346-33.1—Preparation3.2—Construction3.3—Repair3.4—FieldqualitycontrolFOREWORDF.1Thisforewordisincludedforexplanatorypurposesonly;itdoesnotformapartofSpecificationACI346.F.2SpecificationACI346maybereferencedbythearchi-tect/engineerintheprojectspecificationsforanybuildingproject,togetherwithsupplementaryrequirementsforthespecificproject.Responsibilitiesforprojectparticipantsmustbedefinedintheprojectspecifications.Thespecifica-tioncannotanddoesnotaddressresponsibilitiesforanyprojectparticipantotherthanthecontractor.F.3EachtechnicalsectionofSpecificationACI346iswritteninthethree-partsectionformatoftheConstructionSpecificationsInstitute,asadaptedforACIrequirements.Thelanguageisimperativeandterse.F.4ChecklistsdonotformapartofSpecificationACI346.Checklistsassistthearchitect/engineerinselectingandspecifyingprojectrequirementsintheprojectspecifications.PREFACEP.1SpecificationACI346isintendedtobeusedbyrefer-enceorincorporationinitsentiretyintheprojectspecifica-tions.Individualsections,articles,orparagraphsshallnotbecopiedintotheprojectspecificationsbecausetakingthemoutofcontextmaychangetheirmeaning.P.2AstatementsuchasthefollowingwillservetomakeSpecificationACI346apartoftheprojectspecifications:P.3IfsectionsorpartsofSpecificationACI346arecopiedintoprojectspecificationsoranyotherdocument,theyshallnotbeReportedbyACICommittee346JamesB.BennettRobertG.GofoniaGordonBluthAlfredL.Kaufman,Jr.KathyCarlsonGilbertG.Lynch*LeonardJ.ErieIIPaulE.MuellerLesterH.Gabriel*PatrickL.StiehrJamesWillsonEricT.MoranChairmanCurtissW.GilleySecretary*Consultingmember346-2ACISTANDARDreferredtoasACIstandardsbecausethespecificationhasbeenaltered.Workon(ProjectTitle)shallconformtoallrequire-mentsofACI346-XXpublishedbytheAmericanConcreteInstitute,FarmingtonHills,Michigan,exceptasmodifiedbytherequirementsofthesecontractdocuments.PART1—GENERAL1.1—Summary1.1.1Thesespecificationscoverconstructionofcast-in-placeconcretepipe(CIPCP).Thisspecificationisnotvalidforpipewithadiameterover120in.(3050mm).Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Valuesinparenthesesareforinformationonly.1.1.2CIPCPshallconformtoACI301-96Sections1,4,and5.1.2—Referencedstandards1.2.1ACIStandards301-99StandardSpecificationsforStructuralConcrete318-99BuildingCodeRequirementsforReinforcedConcrete1.2.2ASTMStandardsC76-88SpecificationforReinforcedConcreteCulvert,StormDrain,andSewerPipeC171-97aSpecificationsforSheetMaterialforCuringConcreteC309-97SpecificationforLiquidMembrane-FormingCompoundsC361-89SpecificationforReinforcedConcreteLowHeadPressurePipeC497-97StandardTestMethodsforConcretePipe,ManholeSections,orTileC497-98StandardTestMethodsforConcretePipeD698-91(1998)TestMethodforLaboratoryCompactionCharacteristicsofSoilUsingStandardEffort(12,400ft-lbf/ft)D1557-91StandardTestMethodforLaboratoryCom-pactionCharacteristicsofSoilUsingModi-fiedEffortD2419-95StandardTestMethodforSandEquivalentValueofSoilsandFineAggregate1.3—DefinitionsThislistsupplementsACI301-96,Section1.2.Thefol-lowingtermsaredefinedforgeneraluseinthesespecifications.Backfill—fillstartingattopofpipeandcontinuingtosurfaceorfinishedgradeorsubgrade.Boulders—rockshavinganydimensionlargerthan12in.(300mm).CIPCP—cast-in-placeconcretepipe.CLSM—controlledlow-strengthmaterial.Differentialdisplacement—linearoffsetdistancebetweentwopiecesofpipemeasuredalongtheplaneofcrack.Earth—soilorrockotherthanflowablegranularmaterials.Grade—pipedesigninvertelevationminuspipedesignthicknessofpipe.Haunch—eithersideofthepipe,extendingtoapointvertically25degreesabovespringline.Metalfinish—thefinishimpartedtotheinteriorofthepipebycastingmachineandhand-trowellingdevicesmanufacturedfrommetal.Offsettolerances—thedifferenceinpipethickness,trans-verseandlongitudinal,resultingfromthemetalformusedinthecastingprocess.Repair—processbywhichcracksanddefectsinconcretesurfacesarecorre