ASTM_A_810_-_01_2014.pdf

Designation:A81001(Reapproved 2014)Standard Specification forZinc-Coated(Galvanized)Steel Pipe Winding Mesh1This standard is issued under the fixed designation A810;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 specification covers various designs of welded wiremesh or twisted(woven)hexagonal wire mesh,zinc coatedbefore fabrication,to be used as reinforcement for the concreteapplied in the manufacture of negative buoyancy pipe neededfor laying pipe in marshes or in water.The mesh is also usedas reinforcement for concrete applied to pipe as a bendable ornonbendable mechanical protective coating when laying pipein a harsh environment.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 The text of this standard references notes and footnotesthat provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the standard.2.Referenced Documents2.1 ASTM Standards:2A90/A90M Test Method for Weight Mass of Coating onIron and Steel Articles with Zinc or Zinc-Alloy CoatingsA370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA641/A641M Specification for ZincCoated(Galvanized)Carbon Steel WireA902 Terminology Relating to Metallic Coated Steel Prod-uctsB6 Specification for Zinc3.Terminology3.1 DefinitionsFor definitions of terms used in thisspecification,see Terminology A902.4.Classification4.1 The steel pipe winding mesh is classified by type,basedon method of manufacture,and by design number,related towidth,number of longitudinal wires,and wire sizes.4.2 Types of Fabric:4.2.1 Type TWFabric manufactured by twisting wires toform a mesh with a series of hexagonal openings,as shown inFig.1.One of the edges of the fabric includes a straight selvagewire.Additional longitudinal reinforcing wires are includedwhen specified.4.2.2 Type WWFabric manufactured by welding a seriesof longitudinal wires to transverse wires to form a mesh withrectangular openings.4.2.2.1 Type WW-CType WW fabric having uniform spac-ing of longitudinal wires,with the longitudinal wires crimpedas indicated in Fig.2.1This specification is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Productsand is the direct responsibility of Subcom-mittee A05.12 on Wire Specifications.Current edition approved Aug.1,2014.Published August 2014.Originallyapproved in 1983.Last previous edition approved in 2009 as A810 01(2009)1.DOI:10.1520/A0810-01R14.2For 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 4.2.2.2 Type WW-NType WW fabric having nonuniformspacing of longitudinal wires,by having the space between theedge wire and adjacent longitudinal wire double the spacing ofthe intermediate longitudinal wires.All longitudinal wires arecrimped as indicated in Fig.3.4.2.2.3 Type WW-SType WW fabric having straight lon-gitudinal wires(without crimping),with uniform spacing asindicated in Fig.4.4.3 Design NumbersThe design number is in the form ofA B C D.4.3.1 For Type TW fabric,whereA=nominal width of wire mesh fabric,in inches(millimetres),B=number of straight reinforcing wires,not including thestraight selvage wire,C=nominal diameter of wire in hexagonal mesh andstraight selvage wire,in inches(millimetres),andD=nominal diameter of straight reinforcing wires,notincluding straight selvage wire,in inches(millimetres).(Example:7.5 1 0.054 0.048.)4.3.2 For Type WW fabric,whereA=nominal overall width of wire mesh fabric,in inches(millimetres),B=number of longitudinal wires,C=nominal diameter of longitudinal wires,in inches(millimetres),andD=nominal diameter of transverse wires,in inches(milli-metres).(Example:7.5 8 0.063 0.063.)5.Ordering Information5.1 Orders for zinc-coated steel pipe winding mesh underthis specification shall include the following information,asnecessary to adequately describe the desired product:5.1.1 Name of material(steel pipe winding mesh),5.1.2 ASTM designation and year of issue,5.1.3 Type of fabric(see 4.2),5.1.4 Design number(see 4.3 and Tables 1 and 2),5.1.4.1 Mesh dimensions for welded mesh(see 9.3 andTable 3),5.1.5 Zinc coating class(see 8.1),5.1.6 Quantity(number of rolls),5.1.7 Width of fabric and length of rolls,and5.1.8 Packaging(see Section 14).6.Materials6.1 The steel from which the wire is produced shall be madeby any c