A highway reconstruction project is being undertaken to reduce accident rates. The reconstruction involves a major realignment of the highway such that a 50 mph design speed is attained. At one point on the highway, an 800 ft equal tangent crest vertical curve exists. Measurements show that at 3-52 stations from the PVC, the vertical curve offset is 3 ft. Assess the adequacy of this existing curve in light of the reconstruction design speed of 60 mph and, if the existing curve is inadequate, compute an adequate curve length.
A highway reconstruction project is being undertaken to reduce accident rates. The reconstruction involves a major realignment of the highway such that a 50 mph design speed is attained. At one point on the highway, an 800 ft equal tangent crest vertical curve exists. Measurements show that at 3-52 stations from the PVC, the vertical curve offset is 3 ft. Assess the adequacy of this existing curve in light of the reconstruction design speed of 60 mph and, if the existing curve is inadequate, compute an adequate curve length.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A highway reconstruction project is being undertaken to reduce accident rates. The reconstruction involves a major realignment of the highway such that a 50 mph design speed is attained. At one point on the highway, an 800 ft equal tangent crest vertical curve exists. Measurements show that at 3-52 stations from the PVC, the vertical curve offset is 3 ft. Assess the adequacy of this existing curve in light of the reconstruction design speed of 60 mph and, if the existing curve is inadequate, compute an adequate curve length.
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