Economics of bridgework, a sequel to Bridge engineering (1921)
Waddell, J. A. L. (John Alexander Low), 1854-1938 · New York, J. Wiley · leaf 275
wever, the hinge should always be placed at mid-depth, so as to distribute properly the thrust over the two chords. Fourth. Comparing the economics of solid-rib, braced-rib, and span-drel-braced arches, it was found that the first mentioned is always con-siderably heavier than either of the others;… … Fig. 26c. Ratio of Weights of Metal in Hingeless Arches as Compared with Three-Hinged Arches for both Railway and Highway Bridges. in case of cantilevering, this would generally be offset by the extra quan-tity of erection metal needed for the braced-rib structure. In short spans,the…
Bridges
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