Probability-Based Load Criteria for Structural Design

by Bruce Ellingwood, NBS, Structural Engineering Group, Gaithersburg, MD, USA,



Document Type: Proceeding Paper

Part of: Structural Safety Studies

Abstract:

Load criteria for use in limit states design of structures are developed using probabilistic methods. Statistical data on load and strengths are integrated by the reliability analysis to yield criteria that are consistent with a prescribed measure of reliability. The load criteria, while having a conventional appearance, lead to more uniform reliability and performance than is possible with existing specifications. The load criteria have been included in American National Standard A58. 1-1982, Minimum Design Loads for Buildings and Other Structures, and provide a focus for material specification writers as limit states design methods are developed for different construction materials.

Subject Headings: Building design | Load factors | Structural design | Load and resistance factor design | Building codes | Construction materials | Structural reliability

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