Letter from the Secretary of war in response to Senate resolution of December 10, 1894, transmitting the report of the Board of Engineers and bridge-b (1894)
United States. Army. Corps of Engineers. · [Washington, D.C.] · leaf 77
o ....12,280 It will be found that the deflection of this truss for a load of 15,000 pounds perlinear foot is 2.35 feet if the elongations and contractions of the web members beneglected; hence its true deflection will about coincide with the distortion of thecable under a load of 2,400 pounds per… … < 30 X 30 X 30 > I I I I I T T T T I T T T T T T 20$ t. 209 t. Allowing a unit strain of 20,000 pounds per square inch, the weight of these partswill be 1,332 pounds per linear foot. The question was investigated whether there was an appreciable inclination ofthe floor beams if three tracks…
Bridges
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