. Handbook of railroad construction; for the use of American engineers. Containing the necessary rules, tables, and formulæ for the location, construction, equipment, and management of railroads, as built in the United States .. . • • «« The resistance due to curves 200X5= 1,000 And the whole resistance, ..... 8,260 Which multiplied by 6, is . . 49,560 or tons, to which add 5 tons as the necessary load upon the 480 APPENDIX. truck, and the whole Aveight is 27,1 tons, which is the necessaryweight of an engine to draw 200 tons over GO feet grades, at 20miles per , generally, Let W
. Handbook of railroad construction; for the use of American engineers. Containing the necessary rules, tables, and formulæ for the location, construction, equipment, and management of railroads, as built in the United States .. . • • «« The resistance due to curves 200X5= 1,000 And the whole resistance, ..... 8,260 Which multiplied by 6, is . . 49,560 or tons, to which add 5 tons as the necessary load upon the 480 APPENDIX. truck, and the whole Aveight is 27,1 tons, which is the necessaryweight of an engine to draw 200 tons over GO feet grades, at 20miles per , generally, Let W= Weight of engine, tender, and train, in tons, V= Speed in miles j^er hour,a u Fraction expressing the grade, c Resistance, in pounds per ton due to the sharpestcurve, which, assume as 5 lbs., as we have nareliable data, and we have, as the weight of the engine, 2240 — weight of engine exclusive of weight on truck. If we assume the adhesion as one fourth of the weiglit on thedrivers, and load 150 tons, speed twenty miles per hour, and gradeforty feet per mile, the above formula becomes, 2240 — nine tons nearly. To which add five tons, and we have as the whole weight, four-teen tons. m IWHSW Rf t;;
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectrailroadsdesignandco
