A study of spliced wooden tie-beams
An engineering thesis on spliced wooden tie-beams submitted by John C. Gustafson at the University of Illinois in 1906, documenting laboratory load tests on timber joints for students and structural engineers. The plates are hand-drawn stress-strain curves inked on yellow-green graph paper, with handwritten axis labels for load in pounds and elongation in thousandths of an inch, plus captions naming joint types such as steel fish plates and lag screws; useful for grid textures, hand-lettered technical annotation, and sparse line-graph forms.
