Economics of bridgework, a sequel to Bridge engineering (1921)
Waddell, J. A. L. (John Alexander Low), 1854-1938 · New York, J. Wiley · leaf 123
ghts will then be alittle over 500 feet. If the side-spans in the simple-truss layout be replaced by steel trestle,the span length for equality of weights will be about 700 feet when thecentral span is erected on falsework. This layout, evidently, cannot beused when the central span must be… … 30.000 25.000 20.000 15.000 10.000 5.000 Fig. 12c. 100 200 300 400 500 600 Lentjth of Cenfral Span in Feet Comparative Weights of Metal for Double-Track, Simple-Truss Bridgesand Type-A-Cantilever Bridges. fixed quantity, while the two intermediate piers can be placed wheredesired. For such a…
Bridges
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