Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 101
thana rope of equal strength. For example, we have seen that on a spanof 10 feet, with wire No. 6, having a deflection of 2 feet, I can runsafely two cars weighing each, loaded, 1,369 pounds, the truss sup-porting, besides, the weight of the rail. On such a structure the postsare 3 inches square,… … _^^^^gi^iS^;j,fcJit.<,^^ijgaj^!fe?,iafeg^^ of two loaded cars, 2,738 pounds + 54 pounds, half the weight of theraiJ, total 2,792 pounds; and, if I do not want to increase the expenseof the posts by increasing their length and size, in order to keep adeflection of ^, I shall have to keep the same…
Science · Technology · Meteorology · Patents
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
