International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 424
ves in hoisting heavy weights and tearing outtimber. The fall or hammer rope is 2 inches in diameter,and the runner used in hoisting up piles is If inches indiameter. The hoisting engine is double-drummed and of nominally25 H. P. The detail of the hammer, shown at E^ gives aclear idea of its… … Fig. 481. Fig. 482. sbeet piles. Sheet piles are always of sawed timber.Where the water is shallow and without a current, 2-inchplanks will be sufficient. As the depth of water and pressure 1014 RAILROAD CONSTRUCTION. increase, the dimensions of sheet piles increase. Usuallythey are thinner than…
Railroad engineering
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