the aprons which cover the gap left fitted with fine hammered steel fulcrum pins, bronze The wind bracing of the top chord system consists of for expansion and contraction, and the electric car rollers and bronze bushings, and operate directly by small lattice girders 20 inches deep, and the bridge… … bottom chords. Above the cost of the approaches. ENGINE ROOM OF DRAWSPAN. floor beams is laid a com- The latter have been ren- plete steel buckle-plate or dered necessary by the trough floor, which is covered with concrete and raising of the height of the bridge from six or seven clutch on the…
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