Excerpt from A Test of Three Large Reinforced Concrete Beams The beams were in the form of slabs, 25 ft. Long, 6 ft. 3 in. Wide, and 34 in. Deep at the middle, and weighed about 33 tons each. They were built for use in the bridge floor over subways. The slabs span the distance from the curb to the center of the street pavement (shorter and smaller slabs spanning the sidewalk space) making a floor over the street upon which the ballast is spread and the track laid for the eight track railroad. The slabs were built in the yards of the Illinois Central Railroad near Twenty seventh St., Chicago, and were to be left where made until ready for transportation to their destination, some seven miles away. 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.