Economics of bridgework, a sequel to Bridge engineering (1921)
Waddell, J. A. L. (John Alexander Low), 1854-1938 · New York, J. Wiley · leaf 197
is clearly indicated the span-length for greatest economy; and it isto be noticed by the flatness of the upper curves that a variation of twenty-five feet or more, either aljove or below the economic length, will make very ECONOMIC SPAN-LENGTHS FOR SIMPLE-TRUSS BRIDGES 159 little difference in the… … 2S0 450 BX) 300 350 400 Spxan in Feef Fig. ISd. Costs per Lineal Foot of Structure for Low-Level, Combined Bridges onSand Foundations 100 Feet Deep. diagrams relate to normal or medium conditions of the materialmarket. In the following table is given a resume of the results of most of the…
Bridges
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