et long and 5 feetdeep, placed at a distance of 12 feet 9 inches apart between thegirders, which in this construction as in that of the tubular FOR THE CONSTRUCTION OF BRIDGES. 263 girders form the parapets of the bridge. The plates formingthe top are 12 feet and 14 feet long, 18 inches broad, and… … at the ends, carefully chain-riveted; the sides are composed ofplates 4 feet lOf inches long, by 2 feet broad, and -^^ inchesthick; except the two last plates at each end, which are j\ inchthick. The joints in these plates are covered alternately bystrips 5 inches broad and by T irons (a a) 4^…
Building, Iron and steel
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