Economics of bridgework, a sequel to Bridge engineering (1921)
Waddell, J. A. L. (John Alexander Low), 1854-1938 · New York, J. Wiley · leaf 276
ts of the corre-sponding simple spans for both railway and highway bridges have beendetermined and plotted. As was anticipated, the arch usually effects agreater relative economy in highway structures than in railway structuresof the same span length; and the longer the span the greater alwaj^s is… … 600 600 Span, in Feet. Fig. 26fZ. Percentages to Apply to Weights of Metal in Trusses of Simple-Truss Spansin Order to Find the Weights for Arch-Ribs and the Superimposed Colunms, withtheir Bracing, to Carry the Same Live Loads. In concluding his paper, the author quoted as follows from…
Bridges
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