Example Problem for Finding the Low Point Station and Elevation for Vertical Curve for Highway 

Determine the elevation of the low point of the centerline of a highway and the elevation of the centerline at station 80+00. A curve is present on the section of the roadway and connects an entrance grade of -3.7% and an exit grade of 1.9%. The PVI of the curve is located at station 89+38.11 with an elevation of 419.88 ft. The PVT is located at station 97+38.11. The maximum superelevation for this curve is 8% and the design superelevation is 5.4%.
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