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1. |
Which of the following is the correct formula for calculating the depth of ballast cushion? |
A. | Sleeper spacing = width of the sleeper + 3 depth of ballast |
B. | Sleeper spacing = width of the sleeper + depth of ballast |
C. | Sleeper spacing = width of the sleeper + 2 depth of ballast |
D. | Sleeper spacing = 3 x width of the sleeper + 2 depth of ballast |
Answer» D. Sleeper spacing = 3 x width of the sleeper + 2 depth of ballast | |