Excerpt from Practical Designing of Retaining Walls IN attempting a revision of Jacob's retaining-walls. It was soon found that the entire treatise would have to be rewritten to bring it fully abreast with the times. The old theory that assumed the direction of the earth-thrust as normal to the inner face of the wall, or as having in all cases a direction parallel to the top surface has been utterly exploded by every experiment that has been performed; and it is hoped that the time has arrived for its permanent retirement. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.