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Significance and Use
4.1 An estimate of wood failure is one of the principal means for determining the quality of an adhesively bonded wood joint.
4.2 When evaluated after a water soaking, water soaking and drying, or boiling and drying, the percentage of estimated wood failure is an important criterion for qualifying adhesives for use in plywood, laminated structural timber, adhesively bonded wood products and for daily quality control of the processes for manufacturing various adhesively bonded wood products including but not limited to plywood and laminated timbers. Standards that use the percentage of wood failure are included in Section .
4.3 In plywood manufactured from North American softwood species, the percentage of wood failure of Test Method specimens, tested wet after either a vacuum-pressure soak-dry or boil-dry treatment, correlates with the percentage of panels that delaminate in outdoor exposure without protection.
4.4 Similar correlations for other products have not been published.
1.1 This practice provides procedures for estimating the percentage of wood failure that occurs in plywood-shear, block-shear, finger joint test specimens, or any other bondline involving wood.
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are provided for information only.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Other DocumentsAmerican Plywood Association Proposed Standard Met CSA O112.9 Evaluation of Adhesives for Structural Wood Products (Exterior Exposure) General Technical Report FPL-GTR-190 Wood Handbook: Wood as an Engineering Material, Madison, WI: U. S. Department of Agriculture, Forest Service, Forest Products Laboratory, 508 p. 2010. Inspection Bureau Memorandum No. 1 Interpretation of Wood Failure PS 1 U.S. Product Standard for Construction and Industrial Plywood
American National StandardsANSI/HPVA HP-1-2009 American National Standard for Hardwood and Decorative Plywood Available from Hardwood Plywood & Veneer Association, 1825 Michael Faraday Drive, P.O. Box 2789, Reston, VA 20190, www.hpva.org.
D905 Test Method for Strength Properties of Adhesive Bonds in Shear by Compression Loading
D906 Test Method for Strength Properties of Adhesives in Plywood Type Construction in Shear by Tension Loading
D2559 Specification for Adhesives for Bonded Structural Wood Products for Use Under Exterior Exposure Conditions
D4688 Test Method for Evaluating Structural Adhesives for Finger Jointing Lumber
D5572 Specification for Adhesives Used for Finger Joints in Nonstructural Lumber Products
D5751 Specification for Adhesives Used for Laminate Joints in Nonstructural Lumber Products
ICS Number Code 83.180 (Adhesives)
UNSPSC Code 11122001(Plywood)
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ASTM D5266-13(2020), Standard Practice for Estimating the Percentage of Wood Failure in Adhesive Bonded Joints, ASTM International, West Conshohocken, PA, 2020, www.astm.orgBack to Top