Question

The equilibrium cant required on a $5^{\circ }$ curve on a BG track for the train speed of 60 kmph is cm.

• A. $14.81$
• B. $13.81$
• C. $15.23$
• D. $16.32$

Answer 1

The correct option is B $13.81$

Degree of curvature of curve , $D=5^{\circ }$
For a BG track, $G=1.676m$
Speed of train , $V=60kmph$
Radius of curvature , $R=\frac{1720}{D}=\frac{1720}{5}=344m$
Equilibrium superelevation, e = $\frac{G{V}^2}{127R}=\frac{1.676\times {60}^2}{127\times 344}=0.1381m\simeq 13.81cm$