Method for incorporating live load reduction provisions in frame analysis

Abstract

The incorporation of live load reduction provisions of the type in ASCE 7-88 requires careful consideration when analyzing structural systems. Several methods for including live load reduction in system analyses have been suggested. These methods, however, have only treated reduction of member forces for purpose of member proportioning, and they may produce inconsistent member forces. A more comprehensive method for incorporating live load reduction in system analyses has been developed. The method is based on the use of ″compensating forces″ calculated by: applying beam live load reduction factors to the column connectecd beams; applying column live load reduction factors to the columns; and determining any out of balance at the beam-to-column intersections.