Question

If the minimum design speed is 84 kmph, then the ruling minimum radius of the curve in plain terrain is

Answer 1

As per IRC specification, ruling design speed (kmph) = minimum design speed (kmph) + 16
i.e
V = 84 + 16 = 100 kmph

For plain terrain maximum values of e=0.07 and f= 0.15

Ruling minimum radius of curve $=\frac{V^2}{127(e+f)}$

Substituting the values

$R_{rul,min}=358m$