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


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