Economics of bridgework, a sequel to Bridge engineering (1921)
Waddell, J. A. L. (John Alexander Low), 1854-1938 · New York, J. Wiley · leaf 340
ertical Une, theheight of the trunnion above the bottom chord, and the angle of inclinationof the said chord to the vertical; but it will generally be about 50 or 60 300 ECONOMICS OF BRIDGEWORK Chapter XXX feet. For clear heights much exceeding these, the bascule leaf will haveto be longer than the… … 1 l(- / A - 1 -K ^, ^\ /- Xm \ /So cfeor 1 40 ■ ns 1 7f^ J Vertical-Lift Bridge Heel-Trunnion Bascule Fig. 30c. Layouts with No Flanking Truss-Spans.
Bridges
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