Question: An equal - tangent sag vertical curve connects a + 0 . 5 % and + 2 . 5 % initial and final grades, respectively,

An equal-tangent sag vertical curve connects a +0.5% and +2.5% initial and final grades,
respectively, and is designed for 70 MPH. The high point on the curve is at elevation 802 ft.
Find: If the PVC is at station 110+00, what is the elevation of the curve at station 111+78?

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