"Cutting-edge" Quotes from Famous Books
 ... The caisson usually rested on three sets of blockings on each side and two on each end. The blocking was about 4 ft. inside the cutting edge. In the rock, as the cutting edge was cleared for a lowering of about 2 ft., 6 by 8-in. oak posts were placed under the cutting-edge angle. When a sufficient number of posts had been placed, the blocking on which the caisson had rested was knocked or blasted out, and the rock underneath was excavated. The blocking was then re-set at a lower elevation. The posts ...
— Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910 • James H. Brace, Francis Mason and S. H. Woodard |
