If sleeper density is M + 7 for 13 m rails, the minimum depth of ballast under wooden sleepers (25 cm x 13 cm), is

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Question: If sleeper density is M + 7 for 13 m rails, the minimum depth of ballast under wooden sleepers (25 cm x 13 cm), is
[A].

15 cm

[B].

20 cm

[C].

25 cm

[D].

30 cm

Answer: Option B

Explanation:

No answer description available for this question.