. The elements of railroad engineering . FlG. 410. ni plete section of embankment, and Fig. 411 a side cutwhich part is excavation and part embankment. Methods in handling earth vary widely, depending uponthe character of material, the situation, the magnitude of. the work, and very greatly upon the contractor. The sec-tion of roadway shown in Fig. 411 admits of very eco-nomical construction. The material is loosened with theplow or pick, and cast by hand directly from the cut to theadjacent embankment. 1492. The Use of a Road Machine.—A more ex-peditious and economical practice is to handle t
. The elements of railroad engineering . FlG. 410. ni plete section of embankment, and Fig. 411 a side cutwhich part is excavation and part embankment. Methods in handling earth vary widely, depending uponthe character of material, the situation, the magnitude of. the work, and very greatly upon the contractor. The sec-tion of roadway shown in Fig. 411 admits of very eco-nomical construction. The material is loosened with theplow or pick, and cast by hand directly from the cut to theadjacent embankment. 1492. The Use of a Road Machine.—A more ex-peditious and economical practice is to handle the materialwith a road machine. A road machine of great strength,especially designed for railroad use, is much used for workof this character. The blade of the machine cuts andscrapes the material from the higher points and carries it 9U RAILROAD CONSTRUCTION. along, depositing it in the low places. An experienced fore-man, with a good and well-manned machine, can almostcomplete the work on a side hill line, leaving only a littletrimming and ditching to be done by hand. Before usingthe road machine, the ground is broken with a plow. Earthunder favorable conditions can be handled by road machinesat from 10 to 12 cents per cubic yard. A plow especiallydesi
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
