1.A 1600-ft-long sag vertical curve (equal tangent) has a PVC at station 120+00 and elevation of 1500 ft. The initial grade is -3.5% and the final grade is +6.5%. Determine the elevation and stationing of the low point, PVI and PVT.
2.A horizontal curve on a single-lane highway has its PC at station 124+10 and its PI at station 131+40. The curve has a superelevation of 0.06 ft/ft and is designed for 70 mi/h. What is the station of the PT?