Step by step solutionProblem 1. An existing equal-tangent sag vertical curve is designed for 60 mph. The initial grade is -3% and the elevation of the PVT is 750 ft. The PVC of the curve is at station 134+00 and the PVI is at 137+00. An overpass is being constructed directly above the PVI. The overpass design assumes the driver’s eye height is 5 ft. Determine: a. the stopping sight distance b. the curve lengthc. the clearance heightd. the mid-curve offset e. the elevation of the PVIf. the elevation of the bottom of the overpass structureg. Is there a linear relationship between curve length and K-value in this problem? Note: No need to show calculations for case (g).
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Problem 1. An existing equal-tangent sag vertical curve is designed for 60 mph. The initial grade is -3% and the elevation of the PVT is 750 ft. The PVC of the curve is at station 134+00 and the PVI is at 137+00. An overpass is being constructed directly above the PVI. The overpass design assumes the driver’s eye height is 5 ft. Determine:
a. the stopping sight distance
b. the curve length
c. the clearance height
d. the mid-curve offset
e. the elevation of the PVI
f. the elevation of the bottom of the overpass structure
g. Is there a linear relationship between curve length and K-value in this problem?
Note: No need to show calculations for case (g).
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