Engineering Question

timer Asked: Nov 16th, 2016

Question description

An existing length of road consists of a rising gradient of 1 in 20 followed by a vertical parabolic crest curve 300 ft. long, and then a falling gradient of 1 in 40. The curve joins both gradients tangentially, and the elevation of the highest point on the curve is 173.07 ft. Visibility is to be improved over this stretch of road by replacing the curve with another parabolic curve 600 ft. long. a) find the depth if excavation required at the midpoint of the curve. b) Tabulate the elevations of points at 100 ft. intervals along the new curve.

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