Designation:D7351−13StandardTestMethodforDeterminationofSedimentRetentionDeviceEffectivenessinSheetFlowApplications1ThisstandardisissuedunderthefixeddesignationD7351;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodestablishestheguidelines,require-mentsandproceduresforevaluatingtheabilityofSedimentRetentionDevices(SRDs)toretainsedimentwhenexposedtosediment-ladenwater“sheet”flows.1.2ThistestmethodisapplicabletotheuseofanSRDasaverticalpermeableinterceptordesignedtoremovesuspendedsoilfromoverland,nonconcentratedwaterflow.ThefunctionofanSRDistotrapandallowsettlementofsoilparticlesfromsedimentladenwater.Thepurposeistoreducethetransportoferodedsoilfromadisturbedsitebywaterrunoff.1.3Thetestmethodpresentedhereinisintendedtoindicaterepresentativeperformanceandisnotnecessarilyadequateforallpurposesinviewofthewidevarietyofpossiblesedimentsandperformanceobjectives.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Theinch-poundvaluesgiveninparenthesesareprovidedforinformationpurposesonly.1.5AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.5.1Theproceduresusedtospecifyhowdataarecollected/recordedandcalculatedinthisstandardareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatshouldgenerallyberetained.Theproce-duresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsider-ationfortheuser’sobjectives;anditiscommonpracticetoincreaseorreducesignificantdigitsofreporteddatatocom-mensuratewiththeseconsiderations.Itisbeyondthescopeofthisstandardtoconsidersignificantdigitsusedinanalysismethodsforengineeringdesign.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itisthere...
