The Influence of the Form of a Wooden Beam on Its Stiffness and Strength III : Stresses in Wood Members Subjected to Combined Column and Beam Action
This is a 1925 technical report from the NASA Technical Reports Server, a study of wooden beams under combined column and beam loading, written for engineers and testing specialists. Its figures show laboratory test rigs, including a vertical loading frame with a wooden beam and a side-load apparatus on a testing machine, plus a graph of Euler load curves. A designer might take from them the stark, schematic look of early engineering diagrams: plain black linework, labelled arrows, and grid paper graphs that suggest clean structural layouts.
