Development of Performance Specifications for Structural Panels in Residential Markets

Performance based specifications for structural-use panel products is an alternative to the more commodity or product standard approach. The former depends upon the performance attributes of the product in the marketplace, while the latter depends upon manufacturing traits. Performance specifications are products approval documents, which are viewed as a qualification method for a variety of structural-use panel products emerging as a result of new technology. Regulatory pressure from the Federal Trade Commission and other agencies has placed additional emphasis on the development of performance-based specifications. Specification development included criteria reflecting durability, structural performance, and dimensional stability when wet. Durability is based upon a cyclic wet-dry test reflecting a minimum satisfactory performance equal to a minimum 1-year’s exposure to weathering conditions. Structural adequacy is demonstrated by concentrated static and impact tests in both a wet and dry condition. Finally, dimensional stability is based upon field and laboratory tests of a variety of panel products. Criteria for each of these areas was established from the laboratory and field work. A manufacturing and performance specification was then promulgated by the American Plywood Association for single-layer floor applications with other specifications under development.

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