Designation:D6460−12StandardTestMethodforDeterminationofRolledErosionControlProduct(RECP)PerformanceinProtectingEarthenChannelsfromStormwater-InducedErosion1ThisstandardisissuedunderthefixeddesignationD6460;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoverstheguidelines,requirementsandproceduresforevaluatingtheabilityofRolledErosionControlProducts(RECPs)toprotectearthenchannelsfromstormwater-inducederosion.Criticalelementsofthisprotec-tionaretheabilityoftheRECPto:1.1.1Neutralizeandabsorbthehydraulicforceofstormwater,therebyreducingsoilparticlelooseningthrough“scour”mechanisms;1.1.2Slowrunoffandencouragesedimentation,therebyreducingsoilparticletransportdownstream;1.1.3Absorbshearforcesofoverlandflow;1.1.4Trapsoilparticlesbeneath;and1.1.5Promotetheestablishmentofvegetation.1.2Thistestmethodutilizesfull-scaletestingprocedures,ratherthanreduced-scale(bench-scale)simulation,andispatternedafterconditionstypicallyfoundonconstructionsitespriortoandafterrevegetationwork.Further,proceduresforevaluationofbaselineconditionsareprovided.Thus,testpreparation,testexecution,datacollection,dataanalysisandreportingprocedureshereinareintendedtobesuitablefortestingofbaresoil,unvegetatedRECP,vegetatedsoilandvegetatedRECPconditions.1.3ThistestmethodprovidesacomparativeevaluationofanunvegetatedRECPtobaselinebaresoilconditionsandavegetatedRECPtoabaseline,vegetatedconditionundercontrolledanddocumentedconditions.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Theinch-poundunitsgiveninparenthesesareprovidedforinformationpurposesonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatory...
