A developer is having a single-lane raceway constructed with a 180 km/h design speed. A curve on the raceway has a radius of 320
m, a central angle of 30 degrees, and PI stationing at 11 511.200. If the design coefficient of side friction is 0.20, determine the superelevation at the design speed (Hint: Consider normal component of the centripetal force). Also, compute the length of curve and stationing of the PC and PT.
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Answer:
Explanation:
Given
Again differentiate for the second derivative