Designation:C746−90(Reapproved2014)StandardSpecificationforCorrugatedAsbestos-CementSheetsforBulkheading1ThisstandardisissuedunderthefixeddesignationC746;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversthetypes,physicalproperties,anddimensionsofbulkheadcorrugatedasbestos-cementsheetsdesignedtoprovidesheetpilingforerosioncontrolalongfresh-waterlakeshoresandinlandwaterwaysoffreshorsaltwater.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesstatedinparenthesesareprovidedforinformationonly.1.3Warning—Breathingofasbestosdustishazardous.Asbestosandasbestosproductspresentdemonstratedhealthrisksforusersandforthosewithwhomtheycomeintocontact.Inadditiontootherprecautions,whenworkingwithasbestos-cementproducts,minimizethedustthatresults.Forinforma-tiononthesafeuseofchrysotileasbestos,referto“SafeUseofChrysotile:AManualonPreventiveandControlMeasures.”21.4Thefollowingprecautionarycaveatpertainsonlytothetestmethodportion,Sections9–12ofthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimita-tionspriortouse.2.ReferencedDocuments2.1ASTMStandards:3C208SpecificationforCellulosicFiberInsulatingBoardC460TerminologyforAsbestos-Cement(Withdrawn2001)42.2FederalStandard:5Fed.Std.No.123MarkingforShipment(CivilAgencies)2.3MilitaryStandard:5MIL-STD-129MarkingforShipmentandStorage2.4BNQStandard:6BNQStandard3807-098VulcanizedRubber-HardnessDe-termination3.Terminology3.1Definitions:3.1.1flexuralstrength,n—thetransversebreakingloadinnewtonspermeterofwidth(lbf/ftofwidth)ofsaturatedsheetswhenloadedonaspanof1.524m(5ft)withtheloadappliedequallyandsimultaneouslyat...
