Wrought Iron Bridges and Roofs

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Excerpt from Wrought Iron Bridges and Roofs: Lectures Delivered at the Royal Engineer Establishment, Chatham, With Examples of the Calculation of Stress in Girders and Roof Trusses by Graphic and Algebraic Methods In no case, perhaps, has more useless ingenuity been expended than in the production of cumbrous trigonometrical formula for the stresses in roofs, - formula applicable only to a condition of uniform vertical loading, and useless when the actual nature of the forces to which a roof is subjected is taken into account. The author trusts that in the discussion of the effect of wind pressure some real advance has been made, and that the examples of the beautiful graphic method of Professor Clerk Maxwell may prove of essential service to the designer of roofs. Graphic methods have hardly yet received, at all events in this Country, the attention they deserve. In cases like those of roofs they are most powerful, and their principle once thoroughly mastered, they are most facile and accurate in application. 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.