ASTM_D_6461_-_D_6461M_-_22.pdf

Designation:D6461/D6461M22Standard Specifications forSilt Fence Materials1This standard is issued under the fixed designation D6461/D6461M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers requirements and test methodsfor geotextile fabrics and associated components used intemporary silt fence applications.Table 1 is a material pur-chasing specification based on AASHTO M 288.Table 2 is aspecification to be used in areas of high water flow.Thespecification in Table 2 is a higher strength,higher flow optionthan Table 1.Table 2 properties can withstand more hydraulicflow than the specification listed in Table 1.The Table 2specification should be used in sensitive applications,such asareas near regulated waters and wetlands,but also areas thatare prone to high flow runoff that require increased structuralstability.The design professional has the option of Table 2where the specifications listed in Table 1 are not sufficient tomeet the demand of runoff.1.2 Both specifications are applicable to the use of ageotextile as a vertical permeable interceptor designed toremove suspended soil from overland,nonconcentrated waterflow.The function of a temporary silt fence is to trap and allowsettlement of soil particles from sediment-laden water.Thepurpose is to greatly limit the transport of eroded soil fromconstruction sites and other areas affected by water runoff.NOTE1It should be noted that proper installation and maintenance arecritical for the effective functioning of silt fence.1.3 The tests used to characterize the silt fence are intendedto ensure good workmanship and quality and are not necessar-ily adequate for design purposes in view of the wide variety ofpossible sediments and performance objectives.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in nonconformancewith the standard.NOTE2Although the Table 1 specification should be acceptable inmost erosion control applications,it should be noted that an alternative siltfence specification for a higher water flow rate,listed in Table 2,may berequired by the engineers in areas that are susceptible to higher waterrunoff;using Table 2 specification will minimize safety hazards such ashydroplaning in these areas.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D4354 Practice for Sampling of Geosynthetics and RolledErosion Control Products(RECPs)for TestingD4355/D4355M Test Method for Deterioration of Geotex-tiles by Exposure to Light,Moisture,and Heat in a XenonArc-Type ApparatusD4491/D4491M Test Methods for Water Permeability ofGeotextiles by PermittivityD4533/D4533M TestMethodforTrapezoidTearingStrength of GeotextilesD4632/D4632M Test Method for Grab Breaking Load andElongation of GeotextilesD4751 Test Methods for Determining Apparent OpeningSize of a GeotextileD4759 Practice for Determining the Specification Confor-mance of GeosyntheticsD4873/D4873M Guide for Identification,Storage,and Han-dling of Geosynthetic Rolls and SamplesD6241 Test Method for Static Puncture Strength of Geotex-tiles and Geotextile-Related Products Using a 50-mmProbeD6637/D6637M Test Method for Determining Tensile Prop-erties of Geogrids by the Single or Multi-Rib TensileMethod1This specification is under the jurisdiction of ASTM Committee D35 onGeosynthetics and is the direct responsibility of Subcommittee D35.06 on Geosyn-thetic Specifications.Current edition approved Jan.1,2022.Published January 2022.Originallyapproved in 1999.Last previous edition approved in 2018 as D6461/D6461M 18.DOI:10.1520/D6461_D6461M-22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technica