ASTM D198-05
(Test Method)Standard Test Methods of Static Tests of Lumber in Structural Sizes
Standard Test Methods of Static Tests of Lumber in Structural Sizes
SCOPE
1.1 These test methods cover the evaluation of lumber in structural size by various testing procedures.
1.2 The test methods appear in the following order: Sections FlexureCompression (Short Column)Compression (Long Member)TensionTorsionShear Modulus
1.3 Notations and symbols relating to the various testing procedures are given in Appendix X1.
1.4 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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Standards Content (Sample)
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Designation: D 198 – 05
Standard Test Methods of
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Static Tests of Lumber in Structural Sizes
This standard is issued under the fixed designation D 198; 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.
INTRODUCTION
Numerous evaluations of structural members of solid sawn lumber have been conducted in
accordance with Test Methods D 198 – 27. While the importance of continued use of a satisfactory
standard should not be underestimated, the original standard (1927) was designed primarily for sawn
material, such as solid wood bridge stringers and joists. With the advent of laminated timbers,
wood-plywood composite members, and even reinforced and prestressed timbers, a procedure
adaptable to a wider variety of wood structural members is required.
The present standard expands the original standard to permit its application to wood members of all
types. It provides methods of evaluation under loadings other than flexure in recognition of the
increasing need for improved knowledge of properties under such loadings as tension to reflect the
increasing use of dimensions lumber in the lower chords of trusses. The standard establishes practices
that will permit correlation of results from different sources through the use of a uniform procedure.
Provision is made for varying the procedure to take account of special problems.
1. Scope D 1165 Nomenclature of Domestic Hardwoods and Soft-
woods
1.1 These test methods cover the evaluation of lumber in
D 2395 Test Methods for Specific Gravity of Wood and
structural size by various testing procedures.
Wood-Based Materials
1.2 The test methods appear in the following order:
D 4442 TestMethodsforDirectMoistureContentMeasure-
Sections
ment of Wood and Wood-Base Materials
Flexure 4-11
Compression (Short Column) 12-19
E4 Practices for Force Verification of Testing Machines
Compression (Long Member) 20-27
E6 Terminology Relating to Methods of Mechanical Test-
Tension 28-35
ing
Torsion 36-43
Shear Modulus 44-51
E83 Practice for Verification and Classification of Exten-
someter System
1.3 Notations and symbols relating to the various testing
procedures are given in Appendix X1.
3. Terminology
1.4 This standard does not purport to address all of the
3.1 Definitions—See Terminology E6, Terminology D9,
safety concerns, if any, associated with its use. It is the
and Nomenclature D 1165. A few related terms not covered in
responsibility of the user of this standard to establish appro-
these standards are as follows:
priate safety and health practices and determine the applica-
3.1.1 composite wood beam—a laminar construction com-
bility of regulatory limitations prior to use.
prising a combination of wood and other simple or complex
2. Referenced Documents materials assembled and intimately fixed in relation to each
2
other so as to use the properties of each to attain specific
2.1 ASTM Standards:
structural advantage for the whole assembly.
D9 Terminology Relating to Wood
3.1.2 depth of beam—that dimension of the beam that is
perpendicular to the span and parallel to the direction in which
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These test methods are under the jurisdiction of ASTM Committee D07 on
the load is applied (Fig. 1).
Wood and are the direct responsibility of Subcommittee D07.01 on Fundamental
3.1.3 shear span—two times the distance between a reac-
Test Methods and Properties.
tionandthenearestloadpointforasymmetricallyloadedbeam
Current edition approved May 1, 2005. Published May 2005. Originally
e1
approved in 1924. Last previous edition approved in 2002 as D 198 – 02 .
(Fig. 1).
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.1.4 shear span-depth ratio—the numerical ratio of shear
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
span divided by beam depth.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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D198–05
FIG. 1 Flexure Method
3.1.5 span—the total distance between reactions on which a 6.1.3 Data on the influence of imperfections on mechanical
beam is supported to accommodate a transverse load (Fig. 1). properties of structural members,
3.1.6 span-depth ratio—the numerical ratio of total span 6.1.4 Data on strength properties of different species or
divided by beam depth. grades in various structural sizes,
3.1.7 structural wood beam—solid wood, laminated wood, 6.1.5 Data for use in checking existing equations or hypoth-
or composite
...
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