Excerpt from Theory of Steel-Concrete Arches and of Vaulted Structures This work then deals especially with the most complicated case, and it is believed that a thoroughly practical solution is offered. About one half of this second edition is entirely new; the remainder is substantially as it appeared in the first edition, though often more condensed. Credit is given in the body of the work to those from whom the author has derived assistance. Special mention though is due Dr. Hermann Scheffler, as his "Theorie des Voutes" has been drawn upon for much of the theory in treating culverts and vaulted structures. The theory of the elastic arch for arch bridges of stone, concrete, brick, etc., is advocated here, as in the author's previous treatises. This theory, as a practical working theory, receives direct confirmation in the many experiments performed by the Austrian Society of Civil Engineers and Architects, in 1890-95, on arches of brick and concrete. 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."