2 (36 Pts) A 4250 ft equal tangent parabolic vertical curve has a back tangent grade (gl) of + 3.6 % and a forward tangent grade (g2) of-1.8 %. If the elevation of the PVI is 4264.82 ft. at station 78+ 25.00; what is: (a) the elevation and stationing of the PVC and PVT; (b) the elevation of the curve at station 83 + 63.00; and (c) the elevation and stationing of the highest and lowest points on the curve? Report all answers to the nearest 0.01 ft
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