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Publication Citation: Database-Assisted Wind Load Capacity Estimates for Low-Rise Steel Frames

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Author(s): S Jang; L L. Lu; Fahim Sadek; Emil Simiu;
Title: Database-Assisted Wind Load Capacity Estimates for Low-Rise Steel Frames
Published: December 01, 2002
Abstract: A comparative study is presented of the estimated wind load capacities of low-rise steel building frames based on loading patterns (magnitude and distribution) established from aerodynamic databases on the one hand, and on patterns specified in the ASCE 7 Standard on the other. The estimated capacities are based on the assumption, verified by numerous sets of calculations, and also used in the development of the ASCE 7 Standard, that the most unfavorable wind load occurs at the instant in time when the peak knee-joint bending moment is attained. The estimates are obtained from detailed inelastic finite-element analyses of the frames with ultimate states associated with local and global instabilities. It is shown that the estimates based on the aerodynamic database are more realistic and risk-consistent and can therefore lead to safer designs at lower costs. These estimates represent a significant advance over the ASCE 7 Standard-based estimates.
Citation: Journal of Structural Engineering--ASCE
Volume: 128
Issue: No. 12
Keywords: building codes;building technology;database-assisted design;finite element analysis;nonlinear analysis;reliability;steel structures;ultimate strength;wind force
Research Areas: Building and Fire Research