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A parabolic curve has a descending grade of -0.8% which meets an ascending grade of 0.6%...

A parabolic curve has a descending grade of -0.8% which meets an ascending grade of 0.6% at station 10+020. The maximum allowable change of grade per 20 m station is 0.20%. Elevation at station 10+020 is 240.60 m.

a) Compute the length of the curve;

b) Compute the horizontal distance of the lowest point from station 10+020;

c) Compute for the vertical distance from PI to the curve;

d) Compute the elevation of the lowest point of the curve;

e) Compute the elevation of station 10+000.

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