Economics of bridgework, a sequel to Bridge engineering (1921)
Waddell, J. A. L. (John Alexander Low), 1854-1938 · New York, J. Wiley · leaf 200
for Low-Level, Combined Bridges onSand Foundations 150 Feet Deep. B. The lighter the superstructure and the live load it carries, thegreater generally is the economic span-length, and the greater the variationof the latter with the depth of foundation. 162 ECONOMICS OF BRIDGEWORK Chapter XVIII C.… … 250 450 500 300 350 400 Span In Feef- FiG. 18/. Costs per Lineal Foot of Structure for Low-Level, Combined Bridges onSand Foundations 200 Feet Deep. span-longths somewhat greater than tliose of ihc e()i-rcs])on(Ung structuresfounded upon sand at the same depth. E. Single-track railroad-biidges have…
Bridges
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