ASTM D5456-03
(Specification)Standard Specification for Evaluation of Structural Composite Lumber Products
Standard Specification for Evaluation of Structural Composite Lumber Products
SCOPE
1.1 This specification recognizes the complexity of structural glued products. Consequently, this specification includes both specific procedures and statements of intent that sampling and analysis must relate to the specific product.
1.2 This specification was developed in the light of currently manufactured products as defined in 3.2. Materials that do not conform to the definitions are beyond the scope of this specification. A brief discussion is found in Appendix X1.
1.3 Details of manufacturing procedures are beyond the scope of this specification.
Note 1—There is some potential for manufacturing variables to affect the properties of members that are loaded for sustained periods of time. Users of this specification are advised to consider the commentary on this topic, in Appendix X1.
1.4 This specification primarily considers end use in dry service conditions such as with most protected framing members, where the average equilibrium moisture content for solid-sawn lumber is less than 16 %. The conditioning environment of 6.3 is considered representative of such uses.
1.5 The performance of structural composite lumber is affected by wood species, wood element size and shape, adhesive and production parameters. Therefore, products produced by each individual manufacturer shall be evaluated to determine their product properties, regardless of the similarity in characteristics to products produced by other manufacturers. Where a manufacturer produces product in more than one facility, each production facility shall be evaluated independently. For additional production facilities, any revisions to the full qualification program in accordance with this specification shall be be approved by the independent qualifying agency.
1.6 This specification is intended to provide manufacturers, regulatory agencies, and end users with a means to evaluate a composite lumber product intended for use as a structural material.
1.7 This specification covers initial qualification sampling, mechanical and physical tests, analysis, and design value assignments. Requirements for a quality-control program and cumulative evaluations are included to ensure maintenance of allowable design values for the product.
1.8 This specification, or parts thereof, shall be applicable to structural composite lumber portions of manufactured structural components.
1.9 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only.
1.10 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 5456 – 03
Standard Specification for
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Evaluation of Structural Composite Lumber Products
This standard is issued under the fixed designation D5456; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
Structural composite lumber is intended for use as an engineering material for a variety of end-use
applications. The composition of the lumber varies by wood species, adhesive composition, wood
element size, shape, and arrangement. To provide the intended performance, composite lumber
products require: (1) an evaluation of the mechanical and physical properties and their response to
end-use environments, and (2) establishment of and conformance to standard performance specifica-
tions for quality.
Procedures contained in this specification are also to be used for establishing the design properties
and for checking the effectiveness of property assignment and quality assurance procedures.
The quality assurance sections in this specification are intended to serve as a basis for designing
quality-control programs specific to each product. The objective is to ensure that design values
established in the qualification process are maintained.
This specification is arranged as follows:
Section
Qualification 6
Determination of Allowable Design Stresses 7
Independent Inspection 8
Quality Assurance 10
1. Scope bers, where the average equilibrium moisture content for
solid-sawn lumber is less than 16%. The conditioning envi-
1.1 This specification recognizes the complexity of struc-
ronment of 6.3 is considered representative of such uses.
tural glued products. Consequently, this specification includes
1.5 The performance of structural composite lumber is
bothspecificproceduresandstatementsofintentthatsampling
affected by wood species, wood element size and shape,
and analysis must relate to the specific product.
adhesive and production parameters. Therefore, products pro-
1.2 This specification was developed in the light of cur-
duced by each individual manufacturer shall be evaluated to
3.2. Materials that
rently manufactured products as defined in
determine their product properties, regardless of the similarity
do not conform to the definitions are beyond the scope of this
incharacteristicstoproductsproducedbyothermanufacturers.
specification. A brief discussion is found in Appendix X1.
Where a manufacturer produces product in more than one
1.3 Details of manufacturing procedures are beyond the
facility, each production facility shall be evaluated indepen-
scope of this specification.
dently.Foradditionalproductionfacilities,anyrevisionstothe
NOTE 1—There is some potential for manufacturing variables to affect
full qualification program in accordance with this specification
the properties of members that are loaded for sustained periods of time.
shall be be approved by the independent qualifying agency.
Users of this specification are advised to consider the commentary on this
1.6 This specification is intended to provide manufacturers,
topic, in Appendix X1.
regulatory agencies, and end users with a means to evaluate a
1.4 This specification primarily considers end use in dry
composite lumber product intended for use as a structural
service conditions such as with most protected framing mem-
material.
1.7 This specification covers initial qualification sampling,
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mechanical and physical tests, analysis, and design value
This specification is under the jurisdiction ofASTM Committee D07 on Wood
andisthedirectresponsibilityofSubcommitteeD07.02onLumberandEngineered
assignments. Requirements for a quality-control program and
Wood Products.
cumulative evaluations are included to ensure maintenance of
Current edition approved April 10, 2003. Published June 2003. Originally
e1 allowable design values for the product.
approved in 1993. Last previous edition approved in 2001 as D5456–01a .
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5456–03
1.8 Thisspecification,orpartsthereof,shallbeapplicableto D2915 Practice for Evaluating Allowable Properties for
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structural composite lumber portions of manufactured struc- Grades of Structural Lumber
tural components. D3201 Test Method for Hygroscopic Properties of Fire-
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1.9 Thevaluesstatedininch-poundunitsaretoberegarded Retardant Wood and Wood-Base Products
as the standard. The SI units given in parentheses are for D3755 Test Method for Dielectric Breakdown Voltage and
information only. Dielectric Strength of Solid Electrical Insulating Materials
...
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