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Economics of bridgework, a sequel to Bridge engineering (1921)
Waddell, J. A. L. (John Alexander Low), 1854-1938 · New York, J. Wiley · leaf 235
Iruiretiw! in Wcif^hl, of Metal for Each Excess Pound of Extrane-ous, Uiiiforinly-l)is(ril)ul(>(l Tioad in Siniijle-Truss Spans. the (li(TcM(Mic(> ;il cmrcnt i)iiccs of nuitcrials and labor being about eightycents pc;f s(ju:uc loot of fkjor; but there is a saving effected in the dead… … 1000 m 1400 ^ 1600/©7^/6, of Ma/n Opepi/?q //? fee/- Fig. 216. Diagram of Increase in Weight of Metal for Each Excess Pound of Extrane-ous, Uniformly-Distributed Load in Type-A-Cantilever Bridges. carry an extra pound of extraneous load; hence, for such a span, the extrametal to support the…Bridges
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