Designation:D7258−17StandardSpecificationforPolymericPiles1ThisstandardisissuedunderthefixeddesignationD7258;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationaddressestheuseofroundandrect-angularcross-sectionpolymericpilesinaxialandlateralload-bearingapplications,includingbutnotlimitedtomarine,waterfront,andcorrosiveenvironments.1.2Thisspecificationisonlyapplicabletoindividualpoly-mericpileproducts.Sheetpileandothermechanicallycon-nectedpolymericpileproductsusinginter-lockingsystems,arenotpartofthisspecification.1.3Thepilingproductsconsideredhereinarecharacterizedbytheuseofpolymers,whereby(1)thepilestrengthorstiffnessrequirestheinclusionofthepolymer,or(2)aminimumoffiftypercent(50%)oftheweightorvolumeisderivedfromthepolymer.Thetypeclassificationsofpoly-mericpilesdescribedinSection4showhowtheycanbereinforcedbycompositedesignforincreasedstiffnessorstrength.1.4Thisspecificationcoverspolymericpilesfabricatedfrommaterialsthatarevirgin,recycled,orboth,aslongasthefinishedproductmeetsallofthecriteriaspecifiedherein.Diversetypesandcombinationsofinorganicfillersystemsarepermittedinthemanufacturingofpolymericpilingproducts.Inorganicfillersincludesuchmaterialsastalc,mica,silica,wollastonite,calciumcarbonate,etc.Pilingsareoftenplacedinservicewheretheywillbesubjectedtocontinuousdamporwetexposureconditions.Duetoconcernsofwatersensitivityandpossibleaffectsonmechanicalpropertiesinsuchserviceconditions,organicfillers,includinglignocellulosicmaterialssuchasthosemadeorderivedfromwood,woodflour,flaxshive,ricehulls,wheatstraw,andcombinationsthereof,arenotpermittedinthemanufacturingofpolymericpilingproducts.1.5Thevaluesarestatedininch-poundunitsasthesearecurrentlythemostcommonunitsusedbytheconstructionindustry.1.6Polymericpilesunderthisspecificationarede...
