Load Factor Design for steel highway bridges

Abstract

A step in the development of the Load Factor Design (LFD) criteria was to compare its design output with bridges built under various working stress designs. For this purpose the firm of Richardson, Gordon & Associates was retained to redesign a number of existing bridges using the LFD method. The results of this comparative design study are reported in AISI Bulletin 15 and are discussed in this paper. The LFD method is outlined.