Alu

An overpass is being designed over an existing roadway. The overpass has a length of10.00stations with an elevation of75.29feet at the beginning curve. The grade of the back tangent is+2.15%and the grade of the forward tangent is1.83%. The station at the beginning of the curve is9+25.00. Determine the following: a. The station and elevation of the VPI. b. The station and elevation at the end of the curve. c. The equation for the vertical curve. d. The minimum clearance between the existing roadway at the overpass at station12+30.50if the elevation of the exiting roadway has an elevation of63.72feet.

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