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Excerpt from Types and Details of Bridge Construction, Vol. 1: Arch Spans: Examples of Constructed Wooden, Combination, Wrought Iron and Steel Arches for Highway and Railroad Bridges; A Collection of Essential Features of Special and Important Work, Illustrating Variety of Design Where no references are given the data has been secured from personal notes, official blue prints or from abstracts of reliable data in private libraries. In all drawings unnecessary detail has been eliminated, and the greatest simplicity has been attempted; in some cases the scale and proportions have been modified to emphasize specific features sometimes relative thickness and clearances have been magnified and rivet spacing assumed or the distinction be tween shop and field driven rivets neglected unless essential to the points involved. Figured dimensions are accurate, and generally the leading proportions are reliable, even if only sketched; but the drawings are never intended for working drawings, being used solely to show the arrangement and relation of different parts, and the special features of details and connections. 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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