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Excerpt from System of Useful Formul Adapted to the Practical Operations of Locating and Constructing Railroads; A Paper Read Before the Boston Society of Civil Engineers, December, 1849 It is not pretended that all the formula contained in this paper are original. The principles which have governed the investigations for com puting the elements required for tracing curves, where their localities are such as to admit of the most simple and convenient methods, have, it is believed, been published, and are known by most engineers who have been engaged in the construction of railroads, since the commencement of the railroad system. Neither is it pretended that the system of formula is complete, or that it contains formula suited to every case that can arise. The writer can only say, that after considerable experience in the construo tion of railroads, he does not recollect a case presenting itself which would not be solved by some one of the formula; and it is believed that, with slight modifications, such as any geometer would be able, without dificulty. 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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9781331950837

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