1. American National Standards Institute “Structural Glued Laminated Timber ” ANSI/AITC A 190.1 1983.
2. American Society for Testing and Materials “Mechanical Fasteners in Wood ” ASTM D 1761‐77 Philadelphia Pa. 1981.
3. Doyle D. V. and Scholten J. A. “Performance of Bolted Joints in Douglas‐Fir ” Research Paper FPL 2 U.S. Department of Agriculture Forest Service Forest Products Laboratory Madison Wis. May 1963.