ASTM_D_4932_-_D_4932M_-_89_2014e1.pdf

Designation:D4932/D4932M89(Reapproved 2014)1Standard Test Method forFastener Rupture and Tear Resistance of Roofing andWaterproofing Sheets,Roll Roofing,and Shingles1This standard is issued under the fixed designation D4932/D4932M;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.1NOTEUnits information was editorially corrected in January 2014.1.Scope1.1 This test method covers the determination of the forceneeded to pull a fastener through any type of roofing orwaterproofing ply sheet,roll roofing,or shingle,or to causefastener failure under specified laboratory conditions.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 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:2D226 Specification for Asphalt-Saturated Organic Felt Usedin Roofing and Waterproofing3.Summary of Test Method3.1 The force perpendicular to the fastener shank to tear thesheet or to cause fastener failure is measured with the fastenerhead seated and not seated(tear).3.2 The force parallel to the fastener shank to rupture thesheet or to cause fastener failure is measured with the headseated(rupture,head pull-through).4.Significance and Use4.1 Test values for the resistance of specific ply sheets,rollroofing,or shingles to selected fastener pull-through may assistin the determination of appropriate fastener spacing.Therelative behavior of different fasteners and fasteners with andwithout caps may be evaluated.4.2 Laboratory data will not permit prediction of fieldperformance,particularly long-term performance,and if all testconditions are not the same,data may not be comparable.5.Apparatus5.1 Testing MachineUniversal or tensile testing machinewith automatic load recording equipment,capable of cross-head movement at a constant rate of 25.4 mm/min 1.00in./min.5.2 GripsSelf-aligning grips or clamps for holding thefree end of the test specimen and the nailer holding jig withoutslippage during the test.5.3 Nailer Holding Jig100-mm 4-in.length of cold-formed carbon steel,rectangular structural tubing with outsidenominal dimensions of 102 by 51 mm 4 by 2 in.and 4.8-mm316-in.wall thickness,fabricated as shown in Fig.1.5.4 Wood Nailers,33 by 89 13,+1 by 102 mm 1.5 by3.5 0.5,+0.05 by 4 in.(nominal 2 by 4 in.lumber cut to 4in.length is appropriate).Thirty nailers are required persample.NOTE1The wood nailers must hold the fastener securely and remainsecure in the nailer holding jig during the test.The 89-mm 3.5-in.dimension is critical for the nailer to be secure in the jig;the otherdimensions are not critical and may be varied so long as the nailer works.If preferred,the operator may use continuous lengths of nailer stock up to1 m 40 in.long for multiple specimens as opposed to cutting separatenailers for each specimen.6.Sampling and Test Specimens6.1 Cut 15 MD specimens,175 by 100 mm 7 by 4 in.,inthe machine direction(MD)and another 15 XMD specimens inthe cross-machine direction(XMD)from a representativeportion of the sheet to be tested.If no particular sheet is1This test method is under the jurisdiction ofASTM Committee D08 on Roofingand Waterproofing and is the direct responsibility of Subcommittee D08.20 onRoofing Membrane Systems.Current edition approved Jan.15,2014.Published January 2014.Originallyapproved in 1989.Last previous edition approved in 2006 as D4932 89(2006).DOI:10.1520/D4932_D4932M-89R14E01.2For 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 specified,use Type 1 asphalt-saturated organic felt conformingto the requirements prescribed in Specification D226.6.2 Thirty fasteners of the type to be tested are required.Ifno particular fastener is specified,use galvanized roofing nailswith a 38-mm 112in.long 3.6-mm 0.1205-in.diameterstraight shank and a 9.5-mm 38-in.diameter head.7.Conditioning7.1 Condition all specimens and nailers at 20 to 25C 68 to77F and at 50 6 5%relative humidity for a minimum of 16h prior to testing.8.Procedure8.1 Position each sheet specimen on a broad side of a nailer