The radius of a horizontal circular curve is 100 𝑚. The design speed is 50 kmph and design coefficient of lateral friction is 0.15. The superelevation rate required if full lateral friction is assumed to develop will be:
A. 1 in 24.7
B. 1 in 21.2
C. 1 in 18.7
D. 1 in 14.2
Answer:B
The radius of a horizontal circular curve is 100 𝑚. The design speed is 50 kmph and design coefficient of lateral friction is 0.15. The superelevation rate required if full lateral friction is assumed to develop will be:
A. 1 in 24.7 B. 1 in 21.2 C. 1 in 18.7 D. 1 in 14.2