Transactions of the American Society of Civil Engineers, Vol. LXX, Dec. 1910

Locomotive Performance On Grades Of Various Lengths, Paper No. 1172

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Published: 1910
Language: English
Wordcount: 5,527 / 25 pg
Flesch-Kincaid Reading Ease: 69.1
LoC Categories: T, AP
Downloads: 382
Added to site: 2006.07.04
mnybks.net#: 13790
Origin: gutenberg.org
Genre: Non-fiction
Excerpt

d carry it over the grade. This is probably a maximum, considering the condition of the equipment of this Virginian Railway, as previously mentioned.

Treating Item 14 in the same way, a distance of 2,310 ft. is accounted for by momentum, leaving, say, 5.5 miles for the steam, or the length of a 0.02 grade on which a locomotive may be loaded on a basis of tractive power equal to 24.2% of the weight on the drivers.

From these figures it may be concluded that on lines having grades from 12 to 15 or more miles in length, grades of 3 to 5 miles in length may be inserted having rates 50% in excess of that of the long grades, without decreasing the capacity of the line. This statement, of course, is general in its bearings, each case being subject to its especial limitations, and subject to detailed calculations.

It may be noted that the velocity of 60 ft. per sec., assumed at the foot of the grade, is probably higher than should be expected in practice; it insures, on the other hand, that quite

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