Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 70
els. Theyconsider that a girder should have about one-twelfth to one-tenth as much depth as span; for Spans. ASlichtand that the weight of a web should be about Upward Curve isequal to that of its flanges. They usually give Gainful. Pins orpanels twice as much depth as length, with a Rlvets in… … Plate girder bridge. construction are preferred; usually for lengths of from 20 to 125feet, plate girders are chosen; for spans of 125 to 150 feet rivetedlattice trusses are built; for spans of 150 to 600 feet pin-connectedtrusses are employed. Here we reach the economical limit of alength for…
Inventions · Inventors
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