An overpass structure is being designed over a railroad track as shown in the diagram below. The bottom of the overpass

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An Overpass Structure Is Being Designed Over A Railroad Track As Shown In The Diagram Below The Bottom Of The Overpass 1 (54.5 KiB) Viewed 12 times

An overpass structure is being designed over a railroad track as shown in the diagram below. The bottom of the overpass structure is at a height of 36 ft above the tracks, which are at the same elevation as the existing roadway. The overpass is 40 ft wide. On each side of the structure, there is a crest curve, which is followed immediately by a sag curve (with the sag connecting to the existing level grade section). These curves are designed such that they connect directly to one another (i.e., the PVT of the first curve is the PVC of the second curve). If the design speed of the alignment is 60 mi/h: a. What is the connecting grade equal to? (10 points) b. What is the length of the entire alignment (from the PVC of the sag curve on one side to the PVT of the sag curve on the other, including the 40-ft overpass)? (10 points) PVC PVTC PVC PVTS PVT, = PVCc PVTC = PVCs Overpass 40 ft 36 ft Railroad Track