Strength-Based Reliability of Wood Shearwalls Subject to Wind Load
Publication: Journal of Structural Engineering
Volume 131, Issue 2
Abstract
Wood shearwalls provide the majority of the lateral force resistance in light-frame wood construction, which makes up the vast percentage of residential and some percentage of commercial construction in the United States. One of the objectives of a recent Structural Engineering Institute (SEI) special project entitled “Re-evaluation of LRFD for engineered wood products: Keeping pace with changes in ASCE 7” was to evaluate the reliability of wood shearwalls designed using AF&PA/ASCE 16. This technical note describes the evaluation procedure and presents results from an analysis of wood shearwalls subject to wind load considering the ultimate strength (capacity) limit state. In addition to ultimate capacity, statistical distributions of the deformations at ultimate capacity were determined. The resistance of each wall was determined from a monotonic pushover analysis, which uses existing load–slip fastener data to determine the monotonic behavior of a wood shearwall. The wind load statistics were determined as a function of the nominal (code-specified) values using existing load models. Reliability indices for wood shearwalls built using 8d common nails [ diameter] and subject to the design wind load ranged from to 3.5. The percent drift at ultimate (neglecting uplift) ranged from 1.6 to 2%.
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Acknowledgment
The writers acknowledge the partial support of the Structural Engineering Institute (SEI) of ASCE through the Special Project entitled “Re-evaluation of LRFD for engineered wood products: Keeping pace with changes in ASCE 7.”
References
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 131 • Issue 2 • February 2005
Pages: 359 - 363
Copyright
© 2005 ASCE.
History
Received: Sep 9, 2003
Accepted: May 25, 2004
Published online: Feb 1, 2005
Published in print: Feb 2005
Notes
Note. Associate Editor: Shahram Sarkani
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