ASTM D5764-97a(2002)
(Test Method)Standard Test Method for Evaluating Dowel-Bearing Strength of Wood and Wood-Base Products
Standard Test Method for Evaluating Dowel-Bearing Strength of Wood and Wood-Base Products
SCOPE
1.1 This test method provides the basic procedure for evaluating dowel-bearing strength of wood and wood-base products. The bearing test results are used to determine the static load resistance and deformation characteristics of connections in wood and wood-base products resulting from the application of a load transmitted by a fastener inserted into a predrilled hole, or driven without drilling. Methods are given for preparing specimens with predrilled holes larger than the fastener diameter and specimens with holes produced by inserting fasteners in holes smaller than the fastener diameter. The methods apply to fasteners such as dowels, bolts, nails, spikes, drift pins, screws, lag screws, and staples.
1.2 This test method also provides the basis for determining the compression behavior of wood products beneath a laterally loaded fastener where the thickness of the product and the diameter of the fastener are such that minimal bending of the fastener occurs during testing.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D 5764 – 97a (Reapproved 2002)
Standard Test Method for
Evaluating Dowel-Bearing Strength of Wood and Wood-
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Based Products
This standard is issued under the fixed designation D 5764; 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 (e) indicates an editorial change since the last revision or reapproval.
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1. Scope E 4 Practices for Force Verification of Testing Machines
1.1 This test method provides the basic procedure for
3. Terminology
evaluating dowel-bearing strength of wood and wood-based
3.1 Definitions:
products. The bearing test results are used to determine the
3.1.1 dowel-bearing behavior—the load-deformation be-
static load resistance and deformation characteristics of con-
havior of wood or wood-base products laterally loaded by a
nections in wood and wood-base products resulting from the
fastener where the fastener does not bend during loading.
application of a load transmitted by a fastener inserted into a
3.1.2 dowel-bearing strength—yield load obtained from the
predrilled hole, or driven without drilling. Methods are given
load-deformation curve of a dowel-bearing test divided by the
for preparing specimens with predrilled holes larger than the
dowel diameter and specimen thickness.
fastener diameter and specimens with holes produced by
inserting fasteners in holes smaller than the fastener diameter.
4. Summary of Test Method
The methods apply to fasteners such as dowels, bolts, nails,
4.1 Specimens consisting of a single rectangular parallele-
spikes, drift pins, screws, lag screws, and staples.
pipedmemberwithafastenerholeperpendiculartothefacesof
1.2 This test method also provides the basis for determining
the member are evaluated for the resistance to embedding the
the compression behavior of wood products beneath a laterally
fastener into the fastener hole, so as not to bend the fastener.
loaded fastener where the thickness of the product and the
Tests are conducted on a testing machine at a uniform
diameter of the fastener are such that minimal bending of the
deformation rate, while loads and deformation are measured at
fastener occurs during testing.
various intervals. Supplementary physical properties of the
1.3 This standard does not purport to address all of the
wood or wood-base member are also determined.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Significance and Use
priate safety and health practices and determine the applica-
5.1 The localized crushing behavior of wood or wood-base
bility of regulatory limitations prior to use.
products beneath a fastener where the fastener does not bend
provides a material property that is used in theoretical models
2. Referenced Documents
for connections where crushing or fastener bending, or both,
2.1 ASTM Standards:
occur. These theoretical models are used to establish design
D 143 Methods for Testing Small Clear Specimens of
values for wood and wood-base connections. The tests are
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Timber
appropriate when studying the effects of such variables as
D 2395 Test Methods for Specific Gravity of Wood and
fastener diameter, fastener hole size, moisture content, specific
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Wood-Based Materials
gravity, and grain direction on the dowel-bearing strength.
D 2915 Practice for Evaluating Allowable Properties for
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Grades of Structural Lumber
6. Apparatus
D 4442 TestMethodsforDirectMoistureContentMeasure-
2 6.1 Testing Machine—Any suitable testing machine capable
ment of Wood and Wood-Base Materials
of operation at a constant rate of motion of its movable head
and having an accuracy of 61 % when calibrated in accor-
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dance with Practices E 4.
This test method is under the jurisdiction of ASTM Committee D07 on Wood
and is the direct responsibility of Subcommittee D07.05 on Wood Assemblies.
Current edition approved Oct. 10, 1997. Published March 1998. Originally
published as D 5764 – 95. Last previous edition D 5764 – 97.
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Annual Book of ASTM Standards, Vol 04.10. Annual Book of ASTM Standards, Vol 03.01.
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D 5764 – 97a (2002)
NOTE 2—For driven dowels in species that tend to split, larger than
6.2 Deformation Gage—A deformation-measuring device,
minimum dimensions are recommended to prevent splitting during
with a least reading of 0.001 in. (0.025 mm) for measuring the
specimen preparation and testing.
movement of the fastener into the wood or wood-base speci-
8.2.2.1 For specimens that tend to split before the comple-
men.
tion of the test, a full
...
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