A vertical curve is to connect two tangents that intersect at station 30+50 at an elevation of 800.00 ft. The approach gradient is 3 percent and the departure gradient is -5 percent. The elevation of the curve at station 32+50 must be equal to at most 785.00 ft.
a. What is the required length of the curve?
b. After you round the length of the curve, perform a check that the elevation of the curve at station 32+50 is equal to or less than 785 feet.