An electric locomotive running at 60 kmph on a curved track of 1.68 m gauge laid at 800 m radius should be provided with superelevation of the rail by an amount of

Concept:

Superelevation:

To counteract the effect of centrifugal force, the level of the outer rail is raised above the inner rail by a certain amount to introduce the centripetal force.

This raised elevation of the outer rail above the inner rail at a horizontal curve is called superelevation.

For any gauge super elevation ‘e’ (in m) is given as

Where, G = Gauge distance

V = velocity in Kmph

R = Radius of curve

Calculation:

Given,

G = Gauge distance = 1.68 m

V = velocity in Kmph = 60

R = Radius of curve = 800 m

= 59.52 mm