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Weight
Exercise
5
9.
A.
(pars. 3.6, 3.7; table VI)
5
10.
B.
(par. 3.8; table VII)
560 x 2 = 1,120
1,120 67 = 16+, or 17 switch engines
5
11.
A.
(pars. 3.4, 3.5)
56 x 7 = 392; 392 x .10 = 39+, or 40
45 x 7 = 315; 315 x .10 = 31+, or 32
12 x 7 = 84; 84 x .10 = 8+, or 9
392 + 40 = 432 boxcars
315 + 32 = 347 gondolas
84 + 9 = 93 flatcars
872 total requirement
5
12.
C.
(par. 4.4)
Number of switch crews = SE x 2 x 1.25
(17 5 = 12 switch engines)
= 12 x 2 x 1.25
= 30 switch crews
10
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