The Buckling of Curved Tension-field Girders
This is a 1938 NACA technical memorandum from the National Advisory Committee for Aeronautics, issued through NASA's Technical Reports Server, that reports engineering tests on buckling of curved tension-field girders for aircraft structure. Its engineer audience gets stress-strain graphs, specimen sketches, rig drawings, and test photographs of thin sheet webs with stiffeners. A designer might take from it the plain technical drawing style of charts, schematic sections, and grid-marked test frames.
