The basis for load and resistance factor design criteria of steel building structures

Abstract

This paper will detail the assumptions, the first-order probabilistic basis, the calibration, and the proposed format of load and resistance factor design (LFRD) criteria for steel building structures. Specifically, the paper will concern itself with the background and the choice of the particular first-order model, with the data bases used in evaluating the loading and the resistance functions, with the calibration procedures, and with the final selection of the load and resistance factors. The method will be illustrated by the examples of beams and columns under dead and live loading. The paper will conclude with a brief review of the research work done in connection with the development of LRFD criteria for steel building structures.