Excerpt from Some Foreign Specifications for Railway Materials: Rails, Wheels, Axles, Tires Tests and Taking of Test Specimens. - A synopsis is given in Table 5 showing what tests are required for rails and how many must be made for a given lot. Ultimate strengths varying from 80 000 pounds per square inch to 1 1 2 000 pounds per square inch are called for, with elonga tions Oi from 15 to 8 per cent. In some cases the values for the ultimate strength and the elongation must stand in some pre scribed relation. In only one case is the yield point specified. 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.