Designation:B864/B864M−13StandardSpecificationforCorrugatedAluminumBoxCulverts1ThisstandardisissuedunderthefixeddesignationB864/B864M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversmaterial,geometric,andwallsectionpropertiesofaluminumboxculvertsmanufacturedfromcorrugatedplateorsheet,withattachedribstiffeners,forfieldassembly.Appropriatefastenersandoptionalmaterials,suchasaluminuminvertplatesandheadwalls,arealsodescribed.Applicationsforaluminumboxculvertsincludeconduitsforgravityflowdrainageofsurfacewater,suchasculvertsandstormdrains,aswellasforsmallbridgesandgradeseparationstructuressuchaspedestrianorvehicularunderpasses,andutilitytunnels.1.2Thisspecificationdoesnotincluderequirementsforfoundations,backfill,ortherelationshipbetweenearthcoverorliveloadsandstrengthrequirements.TheseimportantdesignconsiderationsaredescribedintheAASHTOLRFDBridgeDesignSpecificationsandtheLRFDBridgeConstructionSpecifications.1.3Thisspecificationdoesnotincluderequirementsforthehydraulicdesignofthesestructures.Hydraulicdesign,place-mentoffootingsorinverts,andendtreatmentstoresistscouraredescribedinFHWAHDSNo.5.1.4AppendixX1listsnominaldimensionsofboxculvertsizescommonlyavailable.Alsolistedarecross-sectionalareaandhydraulicdesignparametersforthesesizes.1.5AppendixX2listsmanufacturer’ssuggesteddesignpropertiesfortheribstiffenertypes,spacingclasses,andmaterialthicknessesdescribedinthisspecification.1.6ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.2.ReferencedDocuments2.1ASTMStandards:2A36/A36MSpecificationforCarbonStructuralSteelA123/A1...
