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Railways - Engineering

Q1:

If G is gauge is metres, V is speed of trains in km/hour and R is radius of a curve in metres, the equilibrium superelevation is

A

B

C

D

E

ANS:C -

FOR ROAD WORKS: We have to design for 75% speed means super elevation for mixed traffic.

So,
e = (0.75V)^2/gR = V^2/225R. According IRC : The super-elevation is calculated for 75% of design speed.
So e = V^2/225R.