ASTM D4932/D4932M-89(2019)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D4932/D4932M −89 (Reapproved 2019)
Standard Test Method for
Fastener Rupture and Tear Resistance of Roofing and
Waterproofing Sheets, Roll Roofing, and Shingles
This standard is issued under the fixed designation D4932/D4932M; the number immediately following the designation indicates the
year of 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.
1. Scope 3.2 The force parallel to the fastener shank to rupture the
sheet or to cause fastener failure is measured with the head
1.1 This test method covers the determination of the force
seated (rupture, head pull-through).
needed to pull a fastener through any type of roofing or
waterproofing ply sheet, roll roofing, or shingle, or to cause
4. Significance and Use
fastener failure under specified laboratory conditions.
4.1 Test values for the resistance of specific ply sheets, roll
1.2 The values stated in either SI units or inch-pound units
roofing,orshinglestoselectedfastenerpull-throughmayassist
are to be regarded separately as standard. The values stated in
in the determination of appropriate fastener spacing. The
each system may not be exact equivalents; therefore, each
relative behavior of different fasteners and fasteners with and
system shall be used independently of the other. Combining
without caps may be evaluated.
values from the two systems may result in non-conformance
4.2 Laboratory data will not permit prediction of field
with the standard.
performance,particularlylong-termperformance,andifalltest
1.3 This standard does not purport to address all of the
conditions are not the same, data may not be comparable.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Apparatus
priate safety, health, and environmental practices and deter-
5.1 Testing Machine—Universal or tensile testing machine
mine the applicability of regulatory limitations prior to use.
with automatic load recording equipment, capable of cross-
1.4 This international standard was developed in accor-
head movement at a constant rate of 25.4 mm/min [1.00
dance with internationally recognized principles on standard-
in./min].
ization established in the Decision on Principles for the
5.2 Grips—Self-aligning grips or clamps for holding the
Development of International Standards, Guides and Recom-
free end of the test specimen and the nailer holding jig without
mendations issued by the World Trade Organization Technical
slippage during the test.
Barriers to Trade (TBT) Committee.
5.3 Nailer Holding Jig—100-mm [4-in.] length of cold-
2. Referenced Documents
formed carbon steel, rectangular structural tubing with outside
2.1 ASTM Standards:
nominal dimensions of 102 by 51 mm [4 by 2 in.] and 4.8-mm
D226/D226MSpecification for Asphalt-Saturated Organic
[ ⁄16-in.] wall thickness, fabricated as shown in Fig. 1.
Felt Used in Roofing and Waterproofing
5.4 Wood Nailers, 33 by 89−13,+1 by 102 mm [1.5 by
3.5−0.5,+0.05 by 4 in.] (nominal 2 by 4 in. lumber cut to 4
3. Summary of Test Method
in. length is appropriate). Thirty nailers are required per
3.1 The force perpendicular to the fastener shank to tear the
sample.
sheet or to cause fastener failure is measured with the fastener
NOTE 1—The wood nailers must hold the fastener securely and remain
head seated and not seated (tear).
secure 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 other
dimensions are not critical and may be varied so long as the nailer works.
ThistestmethodisunderthejurisdictionofASTMCommitteeD08onRoofing
If preferred, the operator may use continuous lengths of nailer stock up to
and Waterproofing and is the direct responsibility of Subcommittee D08.20 on
1 m [40 in.] long for multiple specimens as opposed to cutting separate
Roofing Membrane Systems.
nailers for each specimen.
Current edition approved May 1, 2019. Published June 2019. Originally
approved in 1989. Last previous edition approved in 2014 as D4932/D4932M–89
ɛ1
6. Sampling and Test Specimens
(2014) . DOI: 10.1520/D4932_D4932M-89R19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.1 Cut 15 MD specimens, 175 by 100 mm [7 by 4 in.], in
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
themachinedirection(MD)andanother15XMDspecimensin
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. the cross-machine direction (XMD) from a representative
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D4932/D4932M − 89 (2019)
FIG. 2 Specimens Fastened to Nailer
FIG. 3 Multiple Specimens Fastened to Long Nailer
NOTE 1—Stock wall thickness is 5 mm [ ⁄16 in.].
FIG. 1 Nailer Holding Jig, 100 mm [4 in.] Long, Cold-Formed Car-
bon Steel
8.1.2 In the remaining five MD and five XMD specimens,
set the heads of the fasteners with a 1-mm [0.04-in.] gap
between the top of the sheet and the underside of the fastener
portion of the sheet to be tested. If no particular sheet is head or cap.
specified, useType 1 asphalt-saturated organic felt conforming
NOTE 3—A 1-mm [0.04-in.] thick feeler gauge aids in establishing the
to the requirements prescribed in Specification D226/D226M.
gap.
6.2 Thirty fasteners of the type to be tested are required. If
8.2 Measure the shank tear resistance on five of the ten MD
no particular fastener is specified, use galvanized roofing nails
specimens with seated fasteners and all five with unseated
with a 38-mm [1 ⁄2 in.] long 3.6-mm [0.1205-in.] diameter
fasteners;similarlymeasuretheshanktearresistanceonfiveof
straight shank and a 9.5-mm [ ⁄8-in.] diameter head.
the ten XMD specimens with seated fasteners and all five with
unseated fasteners, as follows:
7. Conditioning
8.2.1 Clamp the tongue on the narrow side of the
...