International Library of Technology · Scranton, International Textbook Co. · leaf 275
rail head on the outside and on the inside a narrowspace is left as a flange way. The rail used in this particularconstruction is 5f inches high, weighs 100 pounds to theyard, and is in 60-foot lengths. The joints are broken andare bonded with a No. 0000 B. & S. concealed bond. 59. Construction… … Fig. 63. Railway affords an example of recent track work for a con-duit road. The first step towards installing a conduit is todig a trench about 3 feet deep and the width of the roadbed.The trench is rolled to grade and a 4-inch layer of concrete 22 ELECTRIC RAILWAYS. 57 put on its bottom. Fig. 63…
Electrical engineering
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