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 119
mate-rial used. The extent to which concrete and reinforced con-crete are now being used in preference to stone orsteel, may be judged from the fact that, during theyear 1908, there was at least tAventy times morecement manufactured and sold than in the corre-sponding period, ten years previous. As… … 100 REIXFORCED COXCRETE ARCH BRIDGES. 101 spans exceeding three to four hundred feet, -willpiobably continue to be framed in metal, bnt thereis reason to believe that all ordinary town andIonnty bridges and the majority of railroad In-idges■will be bnilt as permanent structures. Reinforced concrete…
Bridges, Concrete · Culverts
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