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Question
The minimum radii of curve recommended for vehicle moving in a hill road which is not snowbound at a speed of 10 m/s is
A.
3.5 m
B.
41 m
C.
3.15 m
D.
46 m
Answer ( Option B)

41 m

Solution

Speed = 10 m/sec
Superelevation = e = 0.10
Coefficient of friction = f = 0.15
Minimum radius of horizontal curve = (V2 / g(e + f))
Minimum radius of horizontal curve = (102 / 9.81(0.10 + 0.15))
                                                              = 40.775 m = 41m

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