Probability-based LRFD for engineered wood construction

Published Date
Structural Safety
1997, Vol.19(1):53–65, doi:10.1016/S0167-4730(96)00030-6
Asian-Pacific Symposium on Structural Reliability and Its Applications

• Author 

• Bruce R. Ellingwood

• Department of Civil Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA

Available online 9 May 1998. 

Abstract

The newly developed load and resistance factor design (LRFD) specification for engineered wood construction in the United States uses probabilistic methods as the technical basis for selecting design strength requirements, load combinations and load factors. Special characteristics of wood and wood products as structural materials are considered. The strength of wood structural products depends on the rate of application and duration of the loads. LRFD criteria for the ultimate limit states account for this dependence by means of a time effect factor. The apparent increase in strength of wood structural systems comprised of several nominally identical and repetitively used members is taken into account with a system factor. Serviceability limit states of deflection and vibration are addressed with some general code guidelines and a nonmandatory commentary.

Keywords

Buildings (codes)

Design (buildings)

Limit states

Loads

Probability theory

Reliability

Statistics

Structural engineering

Wood

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• ☆
  Discussion is open until September 1997 (please submit your discussion paper to the editor, Ross B. Corotis)

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