Excerpt from Economics of Construction in Relation to Framed Structures: Preliminary Parts; Part I. Classification of Structures; Part II. Diagrams of Forces Part I. Is devoted to the Classification of Structures, but the illustrations are, in the meantime, confined to Roof and Bridge Trusses. Many previous attempts have been made by others and myself in this direction, but not one of those that I am acquainted with is at all satisfactory. I trust that the classification now given, although no doubt open to some objections, will commend itself as based for the most part upon scientific distinctions. 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.