Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 118
LONGITUDINAL SLCTION. A.B CD … PL AM or CAISSON J Pneumatic Bridge Foundations. 91 in the sides, wliicli, in connection with the narrow width, proved tobe a mistake, and only 4 inches retreat provided all round to oflfsetpossible irregularities in sinking, which Avas found quite too small. Above the working chamber, a sheet iron…
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