Our website is made possible by displaying online advertisements to our visitors. Please consider supporting us by whitelisting our website.

Minimum depth of ballast cushion for a Broad Gauge wooden sleeper of size 275x25x13 cm with 75cm sleeper spacing is________________?

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