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 63
ches is illustrated also on the left hand arch ofFigure 10. 44 COX CRETE BRIDGES AND CUWERTS. A modification of tlie above method of determin-ing the ero-\vn tlirnst and drawing the line of re-sistance is shown in Figure 8. The space above thearch ring is divided as before into ten equal divi-sions… … Fig. 8 ured ofP to scale on a vertical load line Rt\ FromR and c draw lines at 45 degrees with the verticalintersecting at 0, and from 0 draw lines to thepoints a, b, c and d. Construct a polygon with sides,parallel to the lines Oa, Oh, Or, Od and Oc and ex-tend the two extreme lines of this…
Bridges, Concrete · Culverts
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