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Significance and Use
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 2.
4.3 In plywood manufactured from North American softwood species, the percentage of wood failure of Test Method D906 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.7
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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
American National StandardsANSIA190.1-2012 American National Standard for Wood Products--Structural Glued, Laminated Timber ANSI/HPVAHP-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.
Other DocumentsAmericanPlywoodAssoc CSAO112.9 Evaluation of Adhesives for Structural Wood Products (Exterior Exposure) GeneralTechnicalRepo Wood Handbook: Wood as an Engineering Material, Madison, WI: U. S. Department of Agriculture, Forest Service, Forest Products Laboratory, 508 p. 2010. InspectionBureauMemo Interpretation of Wood Failure PS1 U.S. Product Standard for Construction and Industrial Plywood
ICS Number Code 83.180 (Adhesives)
UNSPSC Code 11122001(Plywood)