ASTM D5456-11a
(Specification)Standard Specification for Evaluation of Structural Composite Lumber Products
Standard Specification for Evaluation of Structural Composite Lumber Products
ABSTRACT
This specification recognizes the complexity of structural glued products. This specification, or parts thereof, shall be applicable to structural composite lumber portions of manufactured structural components. Tests shall be performed to determine the properties of the material in accordance to the following test methods: moisture content measurement; bending; tension parallel to grain; compression parallel to grain; compression perpendicular to grain; longitudinal shear; connections; bond quality; product durability; edgewise bending durability; lateral edge nail durability; thickness swell; and density gradient through the thickness.
SCOPE
1.1 This specification recognizes the complexity of structural glued products. Consequently, this specification covers 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, and 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 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 standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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:D5456 −11a
StandardSpecification for
1
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 (´) 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 members, 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 covers
bothspecificproceduresandstatementsofintentthatsampling
1.5 The performance of structural composite lumber is
and analysis must relate to the specific product. affected by wood species, wood element size and shape, and
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
rently manufactured products as defined in 3.2. Materials that
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
full qualification program in accordance with 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.
shall 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
material.
1
1.7 This specification covers initial qualification sampling,
This specification is under the jurisdiction ofASTM Committee D07 on Wood
andisthedirectresponsibilityofSubcommitteeD07.02onLumberandEngineered
mechanical and physical tests, analysis, and design value
Wood Products.
assignments. Requirements for a quality-control program and
Current edition approved Dec. 1, 2011. Published December 2011. Originally
cumulative evaluations are included to ensure maintenance of
approved in 1993. Last previous edition approved in 2011 as D5456–11. DOI:
10.1520/D5456-11A. allowable design values for the product.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5456−11a
1.8 Thisspecification,orpartsthereof,shallbeapplicableto tural Wood and Wood-Based Products
structural composite lumber portions of manufactured struc- D3201Test Method for Hygroscopic Properties of Fire-
tural components. Retardant Wood and Wood-Based Products
D3755Test Method for Dielectric Breakdown Voltage and
1.9 Thevaluesstatedininch-poundunitsaretoberegarded
DielectricStrengthofSolidElectricalInsulatingMaterials
as standard. The values given in parentheses are mathematical
Under Direct-Voltage Stress
conversions to SI units that ar
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately,ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D5456–11 Designation: D5456 – 11a
Standard Specification for
1
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 (´) 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
1.1 This specification recognizes the complexity of structural glued products. Consequently, this specification covers 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, and 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 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
1
ThisspecificationisunderthejurisdictionofASTMCommitteeD07onWoodandisthedirectresponsibilityofSubcommitteeD07.02onLumberandEngineeredWood
Products.
Current edition approved MayDec. 1, 2011. Published JuneDecember 2011. Originally approved in 1993. Last previous edition approved in 20102011 as
D5456–10a.D5456–11. DOI: 10.1520/D5456-11A.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D5456 – 11a
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 standard. The
...
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