London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 175
d, I was told, would support, in a per-pendicular direction, singly, one ton and a half. The bridgecomplete is geometrically represented by j%. 66. The dimen-sions of the different parts are as follows : —- The main chains {a, Jig. 60., which is an elevation of thecentre part of the bridge) weigh 3…
Architecture
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