Principal Effects of Axial Load on Moment-Distribution Analysis of Rigid Structures
This is a 1935 NACA technical note on moment-distribution analysis of rigid structures under axial load, issued by the National Advisory Committee for Aeronautics for engineers and structural analysts. Its pictures are plain engineering line graphs on gridded paper, with curves plotted against labelled axes, formula boxes in the corners, and labelled tension and compression branches that a designer could borrow as clean chart and diagram layouts.
