Excerpt from Tests of Reinforced Concrete Beams In the determination of the values Of the deformations, all extensometer motions, no matter how many times the load may have been released, are referred to-the position of the rollers at the beginning of the test as zero and no attention has been paid to the set of the beam. Diagrams. - Load deformation curves, de ection curves, and position of the neutral axis are shown in Fig. 21 to 41. The curve marked Upper Fiber represents the deformation per unit of length at the ...
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Excerpt from Tests of Reinforced Concrete Beams In the determination of the values Of the deformations, all extensometer motions, no matter how many times the load may have been released, are referred to-the position of the rollers at the beginning of the test as zero and no attention has been paid to the set of the beam. Diagrams. - Load deformation curves, de ection curves, and position of the neutral axis are shown in Fig. 21 to 41. The curve marked Upper Fiber represents the deformation per unit of length at the compression face of the beam. The curve marked Steel indicates the deformation per unit of length in the plane of the reinforcement, and considers that the steel elongates the same as the concrete at the same depth. The curve of de ection has a separate scale of abscissas. The applied load is here used and no account is taken of the weight of the beam, which has already stressed the fibers at the time the extensometers are read at zero load. The diagram at the top of the figure shows as ordi nates the positions Of the neutral axis corresponding to the loads given on the scale of abscissas. The upper and lower lines of the diagram represent the top and the bottom of the beam, but in the case of reinforced concrete beams the position of the neutral axis is given in per cent., not of the total depth, but of the distance from the compression face 'to the center of the metal reinforce ment. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... 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.
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