Flat sheet metal girders with very thin metal web. Part I : general theories and assumptions
This is a 1931 NACA technical memorandum (No. 604) by the NASA Technical Reports Server collection, a theoretical engineering paper on flat sheet metal girders with very thin webs, written for aircraft structural engineers. The pages are dense with line diagrams of diagonal tension-field web panels, load arrows, and labelled dimensions, so they read as technical drawings rather than decorative art. A designer could borrow their hatched parallel-line patterns, angled stress lines, and schematic geometry for diagrams or textures.
