Railroad Construction, Theory and Practice: A Text-Book for the Use of Students in Colleges and Technical Schools, and a Hand-Book for the Use of Engineers in Field and Office
Railroad Construction, Theory and Practice: A Text-Book for the Use of Students in Colleges and Technical Schools, and a Hand-Book for the Use of Engineers in Field and Office
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ...is guided around a curve. The outside rail is subjected to a greater or less proportion of the longitudinal slipping, likewise to the lateral slipping, and, worst of all, to the grinding action of the flange of the wheel, which grinds off the side of the head. 277. Experimental determination of rail ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ...is guided around a curve. The outside rail is subjected to a greater or less proportion of the longitudinal slipping, likewise to the lateral slipping, and, worst of all, to the grinding action of the flange of the wheel, which grinds off the side of the head. 277. Experimental determination of rail wear. Several years ago a series of tests for rail wear were made on the Northern Pacific R. R. by taking up, weighing, and replacing, each year, the several groups of rails under test. Some of these rails were on tangents, the others on curves of various curvature. Some of the rails of each group were made of Bessemer steel, the others of open-hearth steel. No tests were made to determine the loss of weight through mere oxidation. All of the rails were in service for five years and some lasted for six years or more, but the loss in weight during the sixth year was nearly always equal to, and in some cases twice as much as, the loss during the preceding five years. Some of the rails lost over 10% of their weight, or about one-fourth the weight of the head, before being removed. Although the tests were too few to establish any positive laws, some tendencies which may be observed will give at least an approximate idea of the laws of rail wear. 1. The average loss of weight during the first five years on 20 rails on tangents was 0.412 lb. per yard per 10,000,000 tons of traffic. 2. Ten of these same rails were kept in place at least one year longer and during the sixth year lost almost twice as much metal as during the previous five years; in other words, about twothirds of the entire loss occurred during the sixth year. 3. The average loss of weight during the first five years from 20 rails on a tangent was 0.463 lb. per yard per 10,000 trains....
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Seller's Description:
Near fine copy (very light shelf wear). Octavo. 347 pps. Illustrated. Covers all aspects of railway construction. Important reference work. Very scarce in this condition.
