The News Letter of the Bureau of Public Roads, Vol. 2

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Excerpt from The News Letter of the Bureau of Public Roads, Vol. 2: June, 1927The pre-cast concrete piles were designed with A tapered shank. (figure I bottom) the lower end OF the pile was enlarged To form A bell-shaped section, IN which was constructed A socket 42 inches deep BV I4 inches IN diameter, which was fitted over the top OF the previouslv-driven timber pile. Into the outer end OF the socket was fixeo A cast-steel die with A cutting edge. '(figure 2) preparatdrv To driving the concrete pile, the top OF the wooden pile was trimmed SO AS To BE about I inch larger IN diameter than the die. AS the driving progressed, the die cut away the surplus wood. And A tight fit was obtained between the wood and concrete sections OF the composite pile.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.