For flat bottom sleepers, maximum size of ballast, is
Options
A. 50 mm
B. 40 mm
C. 33 mm
D. 25 mm
E. 20 mm
Correct Answer
50 mm
Railways problems
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1. If a 0.7% upgrade meets a 0.65% downgrade at a summit and the permissible rate of change of grade per chain length is 0.10%, the length of the vertical curve, is
3. If D is distance between centres of two parallel track of gauge G, then, total length of cross-over (from the point of commencement to the point of termination) with an intermediate straight portion and N crossing, is given by