Flat sheet metal girders with very thin metal web. Part III : sheet metal girders with spars resistant to bending - the stress in uprights - diagonal tension fields
A 1931 NACA technical memorandum from the NASA Technical Reports Server, a typed engineering report on flat sheet metal girders with thin metal webs, written for aircraft structural designers. The pictures are line diagrams of diagonal tension-field web panels, with stiffener uprights, spar sections and a rotated cross-section drawing, offering a designer a clear schematic vocabulary for braced structural panels.
