TABLE 2.--TRACTIVE FORCE, CATAWISSA TO LOFTY.

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Length of grade, in miles | | 34.03

| |

Grade {in feet per mile | | 31.47

{percentage |_A_ | 0.597

| |

Resistances, in pounds per 2,000 lb., | |

Gravity (=20 _A_) = 11.94. Friction = 4.70 |_B_ | 16.64

| |

Load: | Cars. | Locomotive.| Tender. | |

Maximum[E] | 1,561 | 44.60 | 25.25 |_C_ | 1,631

Minimum[F] | 1,031 | 60.50 | 34.50 |_C_ | 1,126

| |

Traction (= _B_ _C_ ÷ 2,000 ) Maximum[E] |_D_ | 13.60

Minimum[F] |_D_ | 9.38

Weight on Drivers: | Locomotive.| Helper. | |

Maximum[E] | 21.60 | 63.00 |_E_ | 84.60

Minimum[F] | 47.00 | 72.00 |_E_ | 119.00

| |

Percentage ( = _D_ ÷ _E_ ). | |

Maximum |_F_ | 16.1

Minimum |_F_ | 7.9

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Transactions of the American Society of Civil Engineers, Vol. LXX, Dec. 1910 Locomotive Performance On Grades Of Various Lengths, Paper No. 1172 · 第 8 / 10 题