7. A -3% grade meets a +5% grade near an underpass. In order to maintain the minimum clearance allowed under the bridge and at the same time introduce a vertical transitioning curve in the grade line, it is necessary to use a curve that lies 200-m on one side of the vertex of the straight grade and 100-m on the other. The stationing of the beginning of the curve (200-m side) is 10+000 and elevation is 228m. a.) Determine the stationing of the lowest point of the curve. b.) Determine the elevation at STA 10+040. c.) If the uphill edge of the underside of the bridge is at station 10+220 and at elevation 229.206m, what is the vertical clearance under the bridge at this point?

A +4.0% grade intersects a -3.0% percent grade at PVI Sta. 222+00 and Elevation 300.00 on a two-lane highway with a design speed of 45 mph. Assume AASHTO Standards. 1. Determine the minimum length for the curve that is designed to meet passing sight distance using K-value method 2. Determine the Station and Elevation of the PVC

An equal tangent sag curve is designed with a PVC at station 3+320 and elevation 290m, the PVI at station 3+375 and elevation 288.74m, and the low point is at station 3+365.determine the design speed of the curve.