William A. Radford · Radford Architectural Company · leaf 53
. When the pileis nearly in place the hammer and cushioncap are hoisted up, the jet is removed, thecushion cap is again lowered over the headof the pile and the hammer forces the piledown till it refuses to go further. On thetop of the piles a foundation of concreteis laid, making practically a… … Fig. 20—Section of footing for the foundation of a con-crete wall for a residence. bottom. This hole is made tapering so thatmore concrete may be provided for the bot-tom of the pile and so that the plug whichforms it may be withdrawn. This hole through the pile is an import-ant factor in the…
