ASTM_D_6462_-_03_2008.pdf

Designation:D646203(Reapproved 2008)Standard Practice forSilt Fence Installation1This standard is issued under the fixed designation D6462;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers common installation requirementsfor temporary silt fence applications.This practice is based onAASHTO M288.1.2 This practice is applicable to the use of silt fence as avertical permeable interceptor designed to remove suspendedsoil from overland,nonconcentrated water flow.The functionof a temporary silt fence is to trap and allow settlement of soilparticles from sediment laden water.The purpose is to greatlylimit the transport of eroded soil from the construction site bywater runoff.1.3 The practices presented herein are intended to ensuregood workmanship and quality and are not necessarily ad-equate for all purposes in view of the wide variety of possiblesediments and performance objectives.1.4 The values stated in SI units are to be regarded as thestandard.The values in inch-pound units are provided forinformation only.1.5 This practice offers an organized collection of informa-tion or a series of options and does not recommend a specificcourse of action.This document cannot replace education orexperience and should be used in conjunction with professionaljudgment.Not all aspects of this guide may be applicable in allcircumstances.This ASTM standard is not intended to repre-sent or replace the standard of care by which the adequacy ofa given professional service must be judged,nor should thisdocument be applied without consideration of a projects manyunique aspects.The word“Standard”in the title of thisdocument means only that the document has been approvedthrough the ASTM consensus process.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD4632 Test Method for Grab Breaking Load and Elongationof GeotextilesD6461 Specification for Silt Fence Materials2.2 AASHTO Standard:3M288-96 Standard Specification for Geotextile Specificationfor Highway Applications3.Terminology3.1 For definitions of terms used in this practice,seeTerminology D653.4.Significance and Use4.1 Proper installation is critical to effective performance ofsilt fence.This practice presents procedures for installing siltfence that have been shown to result in silt fence installationsthat effectively redirect and impound surface runoff and,thereby,provide effective sediment control.5.Controlling Material Specifications5.1 All materials used for temporary silt fence shall conformwith the specification requirements of ASTM SpecificationD6461 unless otherwise specified in the controlling projectspecifications.6.Certification6.1 The contractor shall provide to the engineer all certifi-cations required by the controlling material specification.1This practice is under the jurisdiction of ASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.25 on Erosion andSediment Control Technology.Current edition approved July 1,2008.Published July 2008.Originally approvedin 1999.Last previous edition approved in 2003 as D6462 03.DOI:10.1520/D6462-03R08.2For 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.3Available from American Association of State Highway and TransportationOfficials(AASHTO),444 N.Capitol St.,NW,Suite 249,Washington,DC 20001,http:/www.transportation.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 7.Sampling,Testing,and Acceptance7.1 Silt fence materials shall be subject to sampling andtesting in accordance with and to verify conformance with thecontrolling material specification.8.Silt Fence Installation8.1 MaterialsSilt fence materials shall conform to therequirements of Section 5.Unless otherwise specified,the siltfence installation shall conform to the following:8.1.1 The geotextile used for temporary silt fence may ormay not be supported between posts with wire or polymericmesh.8.1.2 The minimum height above ground for the silt fenceshall be 600 mm(2.0 ft).Minimum embedment depth shall be150 mm(0.5 ft).8.1.3 Maximum post spacing shall be