ASTM_D_173_-_D_173M_-_03_2018.pdf

Designation:D173/D173M03(Reapproved 2018)Standard Specification forBitumen-Saturated Cotton Fabrics Used in Roofing andWaterproofing1This standard is issued under the fixed designation D173/D173M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.This standard replaces Federal Specification SS-C-450.1.Scope1.1 This specification covers woven cotton fabrics saturatedwith either asphalt or coal-tar pitch intended to be used withasphalts conforming to Specifications D312/D312M or D449/D449M,coal-tar pitches conforming to Specification D450/D450M,or appropriate solvent bearing bituminous materials inthe construction of roofing and waterproofing systems.1.1.1 Asphalt-saturated cotton fabric shall be used withasphalt base plying cement;typical ones are mopping asphaltsconforming to Specifications D312/D312M or D449/D449Mor appropriate solvent bearing asphaltic compounds.1.1.2 Coal-tar-saturated cotton fabric shall be used withcoal-tar based plying cements;a typical one is coal-tar pitchconforming to Specification D450/D450M or appropriate sol-vent bearing coal-tar compounds.1.2 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 non-conformancewith the standard.1.3 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:2D146/D146M Test Methods for Sampling and TestingBitumen-Saturated Felts and Woven Fabrics for Roofingand WaterproofingD312/D312M Specification for Asphalt Used in RoofingD449/D449M Specification forAsphalt Used in Dampproof-ing and WaterproofingD450/D450M Specification for Coal-Tar Pitch Used inRoofing,Dampproofing,and WaterproofingD1079 Terminology Relating to Roofing and WaterproofingD3775 Test Method for End(Warp)and Pick(Filling)Countof Woven Fabrics3.Terminology3.1 DefinitionsFor definitions of terms used in thisspecification,refer to Terminology D1079.4.Materials and Manufacture4.1 In the process of manufacture,the dry cotton fabric shallbe thoroughly and uniformly saturated with bitumen.This shallbe accomplished by passing the fabric through the saturant orby spraying with saturant,calendering in the presence of heat,and then cooling before winding on a core.4.2 If fabric with a selvage is used,the selvage shall not bemore than 16 mm 58in.wide.4.3 The fabric shall be woven entirely from cotton fibers,but customary sizing materials not exceeding 8%by weight ofthe moisture-free cotton shall be permitted to be used.5.Physical Properties5.1 The material shall conform to the physical requirementsprescribed in Table 1 and the dimensions and masses pre-scribed in Table 2.5.2 The finished product shall not crack nor be so sticky asto cause tearing or other damage upon being unrolled attemperatures between 10 and 60C 50 and 140F.6.Workmanship,Finish,and Appearance6.1 The meshes of the fabric shall not be completely closedor sealed by the process of saturation.There shall be sufficient1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsibility of Subcommittee D08.04on Felts,Fabrics and Bituminous Sheet Materials.Current edition approved July 1,2018.Published July 2018.Originally approvedin 1923.Last previous edition approved in 2011 as D173/D173M 03(2011)1.DOI:10.1520/D0173_D0173M-03R18.2For 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 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 Technical Barriers to Trade(TBT)Committee.1 porosity maintained to allow successive moppings of theplying cement to seep through.6.2 The surface of the fabric shall not be coated or coveredwith talc or other substances that would tend to interfere withadhesion between the fabric and the plying cement.The use ofsili