MANUAL FOR ENGINEERED WOOD CONSTRUCTION

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MANUAL FOR ENGINEERED WOOD CONSTRUCTION

Size: 1.04 MB | Format: PDF | Publisher: APA – The Engineered Wood Association | Year: 1996 | pages: 100

This supplement contains adjustment factors, dimensions, factored resistance, reference strengths and other properties required to design structural glued laminated timber in the LRFD format. In this format, the term “resistance” is used to refer to member capacities (i.e., moment resistance, compression resistance, etc.). This is distinct from the term “strength” which refers to limit state material properties — conceptually a “factored allowable stress.” The member resistance values tabulated in this supplement are to be used in conjunction with the design methodologies provided in AF&PA/ASCE 16-95, Standard for Load and Resistance Factor Design (LRFD) for Engineered Wood Construction.
The reference strengths were derived according to the principles of ASTM D5457-93, Standard Specification for Computing the Reference Resistance of Wood-based Materials and Structural Connections for Load and Resistance Factor Design. The tabulated reference strength values are to be used within the reference end-use conditions defined therein. When the end-use conditions fall outside the range of the reference conditions, the reference values shall be adjusted by the product of applicable adjustment factors as defined in AF&PA/ASCE 16-95 and also provided in this supplement. For unusual end-use conditions, the designer should consult additional literature for possible further adjustments.

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