ASTID231288m07595100025082Tm.t-t--5l-'(NBDesignation:D2312-88AMERICANSOCIETYFORTESTINGANDMATERIALS1916RaceSt.,Philadelphia,Pa.19103ReprintedfromtheAnnualBookofASTMStandards,CopyrightASTMIfnotlistedinthecurrentcombinedindex,willappearinthenextedition.StandardSpecificationforPerforated,HomogeneousBituminizedFiberPipeforSepticTankDisposalFields'ThisstandardisissuedunderthefixeddesignationD2312;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(E)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope11Thisspecificationcoversstandardstrengthhomoge-neousperforatedbituminizedfiberpipeandfittingsforuseasexfdtrationlinesforseptictankeffluentinabsorption-disposalfields.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.2.ReferencedDocument2.1ASTMStandard:D2314MethodsofTestingHomogeneousBituminizedFiberPipe'Ø3.MaterialsandManufacture3.1Pipeandcouplingsshallbecomposedofaninter-wovenfibrousstructurethoroughlyimpregnatedwithabituminouscompound.Thewailofthepipeshallbedenseandhomogeneous,withoutseamsorlaminations,andwithasmoothinteriorsurfacefreeofobstructionsandroughorflakyareas.Bendsandfittingsshaiibeofthesamematerialasthepipe,orofamaterialhavingequalorbetterphysicalandchemicalcharacteristics.3.2Pipeandfittingsshalluseeitherofthefollowingjointsystems:3.2.1TypeTJJoìilts-Pipeandfittingsshailbeprovidedwithaccuratelymachinedormoldedtaperedjoints,andataper-sleevecouplingshallbeprovidedforeachlengthofpipeandforeachfittingwhereapplicable.Theslopeofthetaperinbothpipeandcouplingshallbe2"(4"includedangie)(seeFig.1).3.2.2TypeBJJoints-Pipeandfittingsshallhavesquarelycutends,andasplit-collarorinternalcouplingshallbeprovidedforeachlengthofpipeandforeachfittingwhereapplicable.4.ChemicalandPhysicalRequirements4.1ChernicalResistance-Thespecimenshallshownoevidenceofchemicalreactionordeteriorationofimpregnant.4.2WaterAbsorption-Themaxi...
