Vertical curve A symmetrical parabolic curve passes through point A whose elevation is 23.23 m at a distance of 54 m from the PVC. The elevation of the PVC at Station 4 + 100 is 22.56 m. The grade of the back tangent is +2% and the length of the curve is 120 m. 1. Compute the grade of the forward tangent. 2. Compute the stationing of the highest point of the curve. 3. Compute the elevation of the highest point of the curve.

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