ASTM D5456-21

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 X2.  
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 X2.  
1.4 This specification primarily considers end use in dry service conditions defined in the governing code-referenced design standards, such as in most covered structures. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.11 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 31-Jan-2021
• ICS: 79.060.01 - Wood-based panels in general
• Technical Committee: D07 - Wood
• Drafting Committee: D07.02 - Lumber and Engineered Wood Products

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D5456 −21
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 7
Stresses
Independent Inspection 8
Quality Assurance 10
1. Scope 1.4 This specification primarily considers end use in dry
service conditions defined in the governing code-referenced
1.1 This specification recognizes the complexity of struc-
design standards, such as in most covered structures. The
tural glued products. Consequently, this specification covers
conditioningenvironmentof6.3isconsideredrepresentativeof
bothspecificproceduresandstatementsofintentthatsampling
such uses.
and analysis must relate to the specific product.
1.5 The performance of structural composite lumber is
1.2 This specification was developed in the light of cur-
affected by wood species, wood element size and shape, and
rently manufactured products as defined in 3.2. Materials that
adhesive and production parameters. Therefore, products pro-
do not conform to the definitions are beyond the scope of this
duced by each individual manufacturer shall be evaluated to
specification. A brief discussion is found in Appendix X2.
determine their product properties, regardless of the similarity
1.3 Details of manufacturing procedures are beyond the
incharacteristicstoproductsproducedbyothermanufacturers.
scope of this specification.
Where a manufacturer produces product in more than one
facility, each production facility shall be evaluated indepen-
NOTE 1—There is some potential for manufacturing variables to affect
the properties of members that are loaded for sustained periods of time. dently.Foradditionalproductionfacilities,anyrevisionstothe
Users of this specification are advised to consider the commentary on this
full qualification program in accordance with this specification
topic in Appendix X2.
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
1
This specification is under the jurisdiction ofASTM Committee D07 on Wood
composite lumber product intended for use as a structural
andisthedirectresponsibilityofSubcommitteeD07.02onLumberandEngineered
material.
Wood Products.
Current edition approved Feb. 1, 2021. Published March 2021. Originally
ɛ1
1.7 This specification covers initial qualification sampling,
approved in 1993. Last previous edition approved in 2019 as D5456–19 . DOI:
10.1520/D5456-21. mechanical and physical tests, analysis, and design value
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5456−21
assignments. Requirements for a quality-control program and D2132Test Method for Dust-and-FogTracking and Erosion
cumulative evaluations are included to ensure maintenance of Resistance of Electrical Insulating Materials
allowable design values for the product. D2394TestMethodsforSimulatedServiceTestingofWood
and Wood-Based Finish Flooring
1.8 Thisspecification,orpartsthereof,shallbeapplicableto
D2395TestMethodsforDensityandSpecificGravity(Rela-
structural composite lumber portions of manufactured struc-
tive Density) of Wood and Wood-Based Materials
tural components.
D2559Specification for Adhesives for Bonded Structural
1.9 Thevaluesstatedininch-poundunitsaretoberegarded
Wood Products for Use Under Exterior Exposure Condi-
as standard. The value
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM 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.
´1
Designation: D5456 − 19 D5456 − 21
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. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
ε NOTE—In Note 9, the reference to X4.7 of Specification D5055 was corrected editorially to X5.7 in January 2021.
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 7
Stresses
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 X2.
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
1
This specification is under the jurisdiction of ASTM Committee D07 on Wood and is the direct responsibility of Subcommittee D07.02 on Lumber and Engineered Wood
Products.
Current edition approved March 1, 2019Feb. 1, 2021. Published May 2019March 2021. Originally approved in 1993. Last previous edition approved in 20182019 as
ɛ1
D5456 – 18.D5456 – 19 . DOI: 10.1520/D5456-19E01.10.1520/D5456-21.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5456 − 21
this specification are advised to consider the commentary on this topic in Appendix X2.
1.4 This specification primarily considers end use in dry service conditions defined in the governing code-referenced design
standards, such as in most covered structures. 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
...