ABSTRACT
The development of more sophisticated hand calculation techniques for structures, including methods developed by great engineers like Hardy Cross, made it possible to analyze, design, and draw structures that could be easily constructed. Urged by the University of Illinois’ Dean of Engineering Milo Ketchum, Cross published a ten-page paper entitled “Analysis of Continuous Frames by Distributing Fixed-End Moments” in 1930, showing how to solve force distribution in indeterminate structures, which was one of the most difficult problems in structural analysis.
