ASTM_D_6711_-_15.pdf

Designation:D671115Standard Practice forSpecifying Rock to Fill Gabions,Revet Mattresses,andGabion Mattresses1This standard is issued under the fixed designation D6711;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 the sizes and quality of rock to fillgabions and mattresses.The term mattress as used in thisstandard shall include the terminology of gabion mattressesand revet mattresses used in Specifications A974 and A975.1.2 This practice does not cover the sizes and quality of rockfor other erosion control uses such as riprap or drainage.1.3 This practice does not cover the material properties orconstruction of gabions or mattresses.1.4 The values in this practice are in English units and are tobe regarded as the standard.SI units are given.1.5 This practice offers a set of instructions for performingone or more specific operations.This document cannot replaceprofessional judgment.Not all aspects of this practice may beapplicable in all circumstances.This ASTM standard is notintended to represent or replace the standard of care by whichthe adequacy of a given professional service must be judged,nor should this document be applied without consideration ofa projects many unique aspects.The word“Standard”in thetitle of this document means only that the document has beenapproved through 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:2A974 Specification for Welded Wire Fabric Gabions andGabion Mattresses(Metallic-Coated or Polyvinyl Chlo-ride(PVC)Coated)A975 Specification for DoubleTwisted Hexagonal MeshGabions and Revet Mattresses(Metallic-Coated SteelWire or Metallic-Coated Steel Wire With Poly(VinylChloride)(PVC)Coating)D4992 Practice for Evaluation of Rock to be Used forErosion ControlD5519 Test Methods for Particle Size Analysis of Naturaland Man-Made Riprap Materials3.Terminology3.1 gabion,nin erosion control,a wire mesh container ofvariable size and interconnected with other similar containers.It is filled with rock to form flexible,permeable,monolithicstructures.3.2 mattress,nin erosion control,a wire mesh containeruniformly partitioned into internal cells with relatively smallheight in relation to other dimensions.Mattresses have smallermesh openings than the mesh used for gabions.4.Summary of Practice4.1 The designer shall establish the suitable sizes,weight,and quality of rock for project use,and examine sources toensure that the required rock is available.4.2 Rock shall be delivered to the work site in a manner tominimize its reduction in sizes(breakdown)during the han-dling of the rock,and then placed and secured within theassembled and interconnected gabion or mattress.NOTE1Clean crushed concrete may be used as an alternative whenrock is not available.5.Significance and Use5.1 Gabions and mattresses,described in SpecificationsA974 and A975,are placed on sites for soil stabilization and toprevent soil erosion.Their ability to function properly dependson their stability,which is partly dependent upon the rocksfilling them.Rock sizes should be chosen to prevent individualrocks from falling through the mesh of the gabions or mat-tresses.The rock also has to withstand natural weatheringprocesses during the life of the project that would cause it tobreakdown to sizes smaller than the wire mesh openingdimensions.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 May 1,2015.Published June 2015.Originallyapproved in 2001.Last previous edition approved in 2008 as D6711 01(2008).DOI:10.1520/D6711-15.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 6.Bulk Filling Materials6.1 Rock to fill gabions or mattresses may be any naturaldeposit of the required sizes or may be crushed rock producedby any suitable method and by the use of any device that yieldsthe required size limits chosen in Section 7.6.2 Rocks shall be hard,angular to round,durable,and ofsuch quality that they shall not disintegrate on exposure towater or weathering during the life of the structure.Guidancefor selecting durable rock is given