left standing above the others, the water be-ing kept out of the caisson by a kind of well, constructedround each of these internal guide piles, which are built upinto the masonry. This method of building in caissons onpile foundations is shown in figs. 3 and 4. The piers of the Fig, 3. j=£l i^Si… … 1 r\ E CAI5JOM IllBiRMl V V V V |P1!^^ V 23. Solid Foundations laid in Cofferdams.—There aremany circumstances under which it becomes necessary to 306 RUDIMENTS OF THE lay the bottom dry before commencing operations. This isdone by inclosing the site of the foundation with a water-tight wall of…
Architecture · Building
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