Research–A Basis for Structural Engineering with Wood

The economic use of wood for structures requires the application of non-destructive test methods to lumber grading. Some such methods are ready for adoption by industry. Information on probable loadings and permissible deformations for design need research effort for substantiation or improvement. Research has produced reliable information for the design of joints fastened with bolts, nails and timber connectors. Adhesives, developed by research, have permitted the development of structural wood products, also by research. These include: laminated timber, plywood box and I-beams, stressed-skin panels, rigid frames, sandwich structures, prefabricated housing components, and aircraft structures. Research on wood fatigue has been done to establish performance expectations for bridges and trestles. Research has produced design property information for poles and piles. Roof structure design has applied the results of research in improved trusses, arches, folded plates, decking, and boards made from fiber and wood particles. Heavy wood structures resist structural deterioration due to fire quite well. Research on wood and fire is receiving attention.

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