Civil Engineering - Highway Engineering - Discussion

V^2/gr.

v-velocity of the vehicle,
g-gravitational force,
r-radius of the curve so right answer is option A.

I think option A is the correct answer.

1) e=E/w.
2) e+f=v^2/gR.

Answer A is exactaly correct.

Here, e+f=v^2/gR.

So, A will be answer.

E=eB.
e=v*v/gR.

SO,
E=v*v*B/gR.
From final equation.
E directly proportion to width, square of velocity and,
inversely proportional to the g and R.
SO, ans B IS RIGHT.

The correct answer is A.

A is the right answer.

I think opt A is the actual incorrect statement. Because from the formulae E= e (rate of super elevation) * B (width of pavement) for designing super elevation, for a perticular pavement width B is same but rate of superelevation can be changed. So width is not proportional to value of superelevation (E). Again superelevation is provided for counteract centrifugal force which is ev^2/gR. So opt C is correct statement. So. Who answered opt A I will go with them.

Basically super elevation is provided to counter the centrifugal force and to reduce the tendency of fast moving vehicles to overturn. If super elevation is less or zero vehicles will have to reduce their speeds to safely turn it. Hence answer B is correct.

Actually, incorrect answer is opt A because when the width is extra large we need not provide super elevation and when the width is narrow we should increase super elevation to provide safe passage of vehicles.