Economics of bridgework, a sequel to Bridge engineering (1921)
Waddell, J. A. L. (John Alexander Low), 1854-1938 · New York, J. Wiley · leaf 201
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 economic span-lengths a littleless than those of the corresponding double-track… … 4O0tt±t 250 300 400 450 SCO 350Span in Feeh FiG. 18^. Costs per Lineal Foot of Structure for Low-Level, Combined Bridges onSand Foundations 250 Feet Deep. sitate such short ones as to require the adoption of plate-girder super-structures. G. In highway bridges having very deep foundations on sand,…
Bridges
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