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 March 2007
Tech News

New Wood Standard Recognizes Latest Glued Laminated Timber Technology

A recently approved ASTM International standard recognizes new state of the art technology for reinforcing glued laminated timber beams. The standard, D 7199, Practice for Establishing Characteristic Values for Reinforced Glued Laminated Timber (Glulam) Beams Using Mechanics-Based Models, was developed by Subcommittee D07.02 on Lumber and Engineered Wood Products, under the jurisdiction of ASTM International Committee D07 on Wood.

Practice D 7199 covers mechanics-based requirements for calculating characteristic values for the strength and stiffness of reinforced structural glued laminated timbers manufactured in accordance with applicable provisions of ANSI/AITC A190.1, Structural Glued Laminated Timber. In addition, the practice describes a minimum set of performance-based durability test requirements for reinforced glulam.

“Practice D 7199, together with the ICC Evaluation Service’s AC 280 (Acceptance Criteria for Fiber-Reinforced-Polymer Glued-Laminated Timber Using Mechanics-Based Models), will provide a basis for manufacturers to introduce new reinforced glulam products into the marketplace,” says Thomas Williamson, vice president, quality assurance and technical services, APA-The Engineered Wood Association. While manufacturers of glued laminated timber will be the most obvious users of D 7199, Williamson says that research organizations and regulatory agencies that deal with lumber products will also find the practice helpful.

A fiber-reinforced-polymer glulam girder test being conducted at the Advanced Engineered Wood Composites Center of the University of Maine.

CONTACT

Technical Information: Thomas Williamson, APA-The Engineered Wood Association, Tacoma, Wash.
Phone: 253/565-6600

ASTM Staff: Kevin Shanahan
Phone: 610/832-9737

Upcoming Meeting:
April 10-12
Forest Products Laboratory
Madison, Wis.

 
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