Designation:D3753−12´1AnAmericanNationalStandardStandardSpecificationforGlass-Fiber-ReinforcedPolyesterManholesandWetwells1ThisstandardisissuedunderthefixeddesignationD3753;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—EditorialcorrectionsaddedinApril2013.1.Scope*1.1Thisspecificationcoversglassfiber-reinforcedpolyestermanholesandwetwellsforuseprimarilyinsanitaryandstormsewerapplications.1.2Thevaluesgivenininch-poundunitsaretoberegardedasthestandard.Thevaluesinparenthesesareprovidedforinformationpurposesonly.1.3Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section8,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimita-tionspriortouse.NOTE1—ThereisnoknownISOequivalenttothisstandard.2.ReferencedDocuments2.1ASTMStandards:2C581PracticeforDeterminingChemicalResistanceofThermosettingResinsUsedinGlass-Fiber-ReinforcedStructuresIntendedforLiquidServiceD695TestMethodforCompressivePropertiesofRigidPlasticsD785TestMethodforRockwellHardnessofPlasticsandElectricalInsulatingMaterialsD790TestMethodsforFlexuralPropertiesofUnreinforcedandReinforcedPlasticsandElectricalInsulatingMateri-alsD883TerminologyRelatingtoPlasticsD1600TerminologyforAbbreviatedTermsRelatingtoPlas-ticsD2412TestMethodforDeterminationofExternalLoadingCharacteristicsofPlasticPipebyParallel-PlateLoadingD2583TestMethodforIndentationHardnessofRigidPlas-ticsbyMeansofaBarcolImpressorD2584TestMethodforIgnitionLossofCuredReinforcedResinsD3892PracticeforPackaging/PackingofPlastics3.Terminology3.1General—DefinitionsareinaccordancewithTerminol-ogyD883andtheabbreviationsareinaccordancewithTerminolo...