Designation:C923−08(Reapproved2013)´1StandardSpecificationforResilientConnectorsBetweenReinforcedConcreteManholeStructures,Pipes,andLaterals1ThisstandardisissuedunderthefixeddesignationC923;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.ε1NOTE—Editoriallycorrected5.3inJanuary2016.1.Scope1.1Thisspecificationcoverstheminimumperformanceandmaterialrequirementsforresilientconnectorsusedforconnec-tionsbetweenreinforcedconcretemanholesconformingtoSpecificationC478andpipes,betweenwastewaterstructuresandpipes,andbetweenprecastreinforcedconcretepipeandlaterals.1.1.1Theseconnectorsaredesignedtominimizeleakagebetweenthepipeandmanhole,andbetweenthepipeandlateral.1.2AcompletemetriccompaniontoSpecificationC923hasbeendeveloped—C923M;therefore,nometricequivalentsarepresentedinthisspecification.NOTE1—Thisspecificationcoversthedesign,material,andperfor-manceoftheresilientconnectiononly.Connectionscoveredbythisspecificationareadequateforhydrostaticpressuresupto13psi(30ft)withoutleakagewhentestedinaccordancewithSection7.Infiltrationorexfiltrationquantitiesforaninstalledsystemaredependentuponmanyfactorsotherthantheconnectionsbetweenmanholestructuresandpipe,andallowablequantitiesmustbecoveredbyotherspecificationsandsuitabletestingoftheinstalledpipelineandsystem.1.3Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section7,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimita-tionspriortouse.Foraspecificprecautionstatement,see7.2.5.2.ReferencedDocuments2.1ASTMStandards:2A493SpecificationforStainlessStee...
