For designing of a composite curve; Deflection angle ∆ = 60o 30' and maximum speed is 70 miles/hour, centrifugal ratio is 1/4, maximum ratio of radial acceleration (α) = 1 ft/sec and chainage of intersection point is 12932 ft. Solve for i. Radius of circular curve ii. Length of transition curve and iii. The chainage of beginning and end of transition curve.

For designing of a composite curve; Deflection angle ∆ = 60o 30' and maximum speed is 70 miles/hour, centrifugal ratio is 1/4, maximum ratio of radial acceleration (α) = 1 ft/sec and chainage of intersection point is 12932 ft. Solve for i. Radius of circular curve ii. Length of transition curve and iii. The chainage of beginning and end of transition curve.

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter15: Geometric Design Of Highway Facilities

Section: Chapter Questions

Problem 21P

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In this solution, may I know where they got the 0.01 slope?