Excerpt from School of Engineering Research, University of Toronto: Bulletin No. 1, 1919 The testing of flat slab buildings under load by means of the extenso meter was carried on in the United States through the combined efforts of several universities, construction companies and consulting engineers. Much of the test data was kept as private information by the con struction companies concerned. Some of it appeared later in the form of University Bulletins. Early in 1916 the building department of the city of Toronto was asked for a permit to erect a large warehouse of the flat slab type. As Toronto had no building by-law of its own governing flat slabs, an examination was made of those in force in the principal American cities, but it was discovered that there was a marked lack of agreement among them. The City Architect's Department thereupon decided to grant permits for buildings designed according to the Chicago building ordi nance previously mentioned, on condition that the buildings when completed be subjected to extensometer tests. Accordingly five build ings, designed for different live loads, and having various panel lengths and schemes of reinforcement, were subjected to such tests by the, city Architect's Department working in conjunction with the Department of Applied Mechanics, University of Toronto. Of these, the T. Eaton factory, the last one tested, has been chosen as the subject of this paper, because in the conduct of the test, there was available the experience and skill in observation acquired from its predecessors. 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.