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A vertical parabolic curve is to connect a back tangent of -3% and a forward tangent...

A vertical parabolic curve is to connect a back tangent of -3% and a forward tangent of +4%. The change of grade is 0.60% per 20 m station. The stationing of PC is 17+428 with an elevation of 200 m. Compute the:

a) length of the parabolic curve;

b) stationing of PT (format: 00+000.00);

c) elevation of PT;

d) elevation of the lowest point of the curve;

e) elevation at Station 17+544.67.

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