Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 447
longitudinal girders act as a parapet, aswell as the main members of the bridge. The concrete for this workwas composed of 1 part Portland cement, 2 parts sand, and 4 parts1-inch stone. Corrugated bars were used as the reinforcing steel. When there is sufficient headroom, all the beams can be… … CONNECTICUT AVENUE BRIDGE OVER ROCK CREEK, WASHINGTON, D. C. Largest concrete bridge in world without steel reinforcement. The five principal archeshave spans of 150 feet; highest point of liridge above gorge, 150 feet; each abutment pier com-prises two smaller arches. Total length between…
Architecture · Building
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