Designation:D6939–03StandardPracticeforBrushmattressing1ThisstandardisissuedunderthefixeddesignationD6939;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversthematerial,preparationandinstal-lationworkrequiredforbrush-mattressconstructionusedinsoilbioengineering.1.2ThevaluesinthisstandardareinSIunitsandaretoberegardedasthestandard.Theinch-poundunitsgiveninparenthesesareforinformationonly.1.3Thispracticeoffersasetofinstructionsforperformingoneormorespecificoperations.Thisdocumentcannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgment.Notallaspectsofthispracticemaybeapplicableinallcircumstances.ThisASTMstandardisnotintendedtorepresentorreplacestandardofcarebywhichadequacyofagivenprofessionalservicemustbejudged,norshouldthisdocumentbeappliedwithoutconsiderationsofaproject’smanyuniqueaspects.Theword“standard”inthetitleofthisdocumentmeansonlythatthedocumenthasbeenapprovedthroughtheASTMconsensusprocess.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D6765PracticeforLiveStaking3.Terminology3.1Definitions:3.1.1brushmattress,n—alayeroflivewoodymaterialanchoredwithstakesandtiesinstalledtocoverandstabilizestreambanksandshorelines.4.SummaryofPractice4.1Abrushmattressisalayeroflivewoodyplantmaterialinstalledtocoverandstabilizestreambanks.DeadStoutStakes(and/orLiveStakes)andties(wire,string,rope,bailingtwine)areusedtoanchorthematerial.Brushmattressingiscommonlyusedonstreambanks,shorelinesandothermoistenvironments.Often,alivefascineand/orrocktoeisusedatthebase.Thebranchescollectsediment...
