Concrete bridges and culverts, for both railroads and highways (1909)
Tyrrell, H. G. (Henry Grattan), b. 1867 · Chicago The M.C. Clarke publishing co. [etc.] · leaf 45
perwidth can be found to properly withstand the earthpressure. For bridges, these principles are usefulchiefly for arches under high embankments. In his book on Civil Engineering, page 420, Ran-kine gives the following approximate method fordrawing the form of a hydrostatic curve about fivecenters… … 1 + 1 + y y + 30 a BF--=2/ DE ^- AF—BD PLAIN CONCRETE ARCH BRIDGES. 27 111 Figure 5, let FB be the half span and FA therise of the proposed arch. ]Make AC=;°, andBDz:=r, the radius of curvature at the crown andspringing as calculated from the above formulae.Then C will be one of the centers and D…
Bridges, Concrete · Culverts
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