Minimum depth of ballast cushion for a Broad Gauge wooden sleeper of s – McqOptions

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1.	Minimum depth of ballast cushion for a Broad Gauge wooden sleeper of size 275x25x13 cm with 75cm sleeper spacing is________________?
A.	15 cm
B.	20 cm
C.	25 cm
D.	30cm
Answer» D. 30cm

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