ASTM E73-83(2002)
(Practice)Standard Practice for Static Load Testing of Truss Assemblies
Standard Practice for Static Load Testing of Truss Assemblies
SCOPE
1.1 This practice is intended as a guide for use in the testing of truss assemblies fabricated from all types of construction materials. While the practice may be used for the testing of a variety of assemblies, it is primarily intended to be used in the testing of those trusses designed to be spaced at 1.2 m (48 in.) centers or greater. It can be used, but it is not normally intended, for the testing of wood residential trussed rafters. Either proof tests or tests to destruction may be run.
1.2 Limitations—It is not intended that this practice be used for routine quality control 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. For specific hazard statements, see Section 7.
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Designation:E73–83 (Reapproved 2002)
Standard Practice for
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Static Load Testing of Truss Assemblies
ThisstandardisissuedunderthefixeddesignationE 73;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.3 For other definitions in this practice, see Terminology
E 631.
1.1 This practice is intended as a guide for use in the testing
of truss assemblies fabricated from all types of construction
4. Summary of Practice
materials. While the practice may be used for the testing of a
4.1 This practice outlines the procedures to be followed in
variety of assemblies, it is primarily intended to be used in the
the static load testing of major load carrying truss assemblies.
testing of those trusses designed to be spaced at 1.2 m (48 in.)
While the procedure tells what to do, it does not tell the testing
centers or greater. It can be used, but it is not normally
agency how to do it.This leaves the selection of the test fixture
intended, for the testing of wood residential trussed rafters.
and loading medium to the discretion of the testing agency.
Either proof tests or tests to destruction may be run.
Materials selection, sampling, conditioning, fabrication, test
1.2 Limitations—It is not intended that this practice be used
procedures, and report requirements are covered.
for routine quality control testing.
4.2 Two types of tests may be conducted using this practice:
1.3 This standard does not purport to address all of the
4.2.1 Proof Tests—A proof test is frequently made to
safety concerns, if any, associated with its use. It is the
provide assurance that the truss will support a stated load or to
responsibility of the user of this standard to establish appro-
determine the deformations and structural response under a
priate safety and health practices and determine the applica-
specified loading.
bility of regulatory limitations prior to use. For specific hazard
4.2.2 Test to Failure—In testing to failure, more detailed
statements, see Section 7.
information is generally desired such as ultimate load carrying
2. Referenced Documents capacity, total load-deflection history, yield point, connection
performance, factor of safety, etc.
2.1 ASTM Standards:
4.2.3 If desired, either type of test may be extended to
E 196 Practice for Gravity Load Testing of FloorsAnd Flat
2 include a determination of the magnitude and distribution of
Roofs
the stresses in the members and connections in order to permit
E 575 Practice for Reporting Data from Structural Tests of
a more comprehensive analysis of the truss performance.
Building Constructions, Elements, Connections, and As-
2
semblies
5. Significance and Use
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E 631 Terminology of Building Constructions
5.1 This practice provides a guide to any individual, group,
3. Terminology agency, or code body on the methods of test for truss
assemblies fabricated from all types of construction materials.
3.1 truss—a coplanar system of structural elements joined
Sample size is generally kept to a minimum to reduce costs.
together at their ends usually to construct a series of triangles
The methods may be used to apply proof loads to an assembly
that form a stable beam-like framework.
or to test it to failure. Information obtained includes strength
3.2 static load—a load or series of loads that are supported
and stiffness data, and if assemblies are tested to their ultimate
by or are applied to a structure so gradually that forces caused
loadcarryingcapacity,thefailuremethodormechanismcanbe
by change in momentum of the load and structural elements
observed.
can be neglected and all parts of the system at any instant are
essentially in equilibrium.
6. Test Apparatus
6.1 General—While the methods described in this proce-
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dure are best suited to tests of trusses before installation in a
ThispracticeisunderthejurisdictionofASTMCommitteeE-6onPerformance
of Buildings and is the direct responsibility of Subcommittee E06.11 on Horizontal
structure, they can also be applied to the testing of trusses after
and Vertical Structures/Structural Performance of Completed Structures.
installation. In the former case, the truss may be tested in either
Current edition approved March 10, 1996. Published May 1996. Originally
a vertical position (normal or inverted) or in a horizontal
published as E 73 – 48 T. Last previous edition E 73 - 83 (1991).
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Annual Book of ASTM Standards, Vol 04.11. position. Additional loadings must be applied to trusses tested
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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