A vertical parabolic curve has its PVI at station 18 + 50.00 and elevation 69.32. The grade of the back tangent is -2.8 percent, the grade of the for- ward tangent is 5.6 percent, and the curve length is 600 ft. Set up a table showing curve elevations at the PVC, at the PVT, and at half-station points along the curve. Compute the station and elevation of the curve turning point.

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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31. A vertical parabolic curve has its PVI at station
18+ 50.00 and elevation 69.32. The grade of the
back tangent is -2.8 percent, the grade of the for-
ward tangent is 5.6 percent, and the curve length is
600 ft. Set up a table showing curve elevations at the
PVC, at the PVT, and at half-station points along
the curve. Compute the station and elevation of the
curve turning point.
Transcribed Image Text:31. A vertical parabolic curve has its PVI at station 18+ 50.00 and elevation 69.32. The grade of the back tangent is -2.8 percent, the grade of the for- ward tangent is 5.6 percent, and the curve length is 600 ft. Set up a table showing curve elevations at the PVC, at the PVT, and at half-station points along the curve. Compute the station and elevation of the curve turning point.
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