London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 187
rebuilt up to the level of the top of the beam {d) at each end, a strong cast-iron compound socket {a a, shown more at large in ^fgs. 87, 88, and 89.) was laid upon it, and the masonry was then continued up. These sockets were prepared to receive two ribs of wrought iron (J^m^g- 87.), 4 in. wide by… … heads of two li in. round w rough t- iron tension bars {/i, forming thg chord line of the arch), whichlie along the upper side of the lower beam of the partition {d), and close to each side of thetie beam of the partition truss:the ends of these are shown insection at h, m ^g. 88. It willbe…
Architecture
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