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Excerpt from Railroad Curves and Earthwork The revision of this edition has been extensive. Few pages dealing with curves have escaped some change. In consider able part it has been a matter of refining or clearing up points shown by teaching to admit of improvement. A considerable amount of new material has been added and a few less impor tant problems omitted by rearrangement, and condensation in places, the size of the book has not been appreciably increased. The chapter on Turnouts has been almost completely rewritten railroad practice in Turnouts has progressed materially in late years and complete revision of this chapter seemed advisable. The chapter on Connecting Tracks and Crossings has been ma terially extended. The chapter on Spirals has largely been rewritten and adapted to the use of the Spiral of the American Railway Engineering Association, the merits of which appeal to the author aside from the official sanction which establishes it as standard. A few, but not many, important changes have been made in the chapters on Earthwork. It is still true that while this text was prepared primarily for students, nevertheless this book has proved to be well adapted to the requirements of the practicing railroad engineer or other engineer who has to deal with curves or with earthwork computation. 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.

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