Economics of bridgework, a sequel to Bridge engineering (1921)
Waddell, J. A. L. (John Alexander Low), 1854-1938 · New York, J. Wiley · leaf 94
ering practice. 58 ECONOMICS OF BRIDGEWORK Chapter VI In order to make the investigation general instead of particular, so asto apply to all other similar river crossings by verj-high-level suspension-bridges, the span-lengths were assumed to be 1,500, 2,300, and 3,000 feet,to permit the plotting… … 1800 2000 2200 2400Mm Spa/? Len^f/> ji) feef. Fig. 6a. Diagram of Total Costs of Highway and Electric-Railway Bridges andTunnels, with their Approaches, for Crossings Similar to that of the North Riverat New York City. of the horizontal portion of the tunnel has been assumed to be exactlyequal…
Bridges
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