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You are being asked to obtain the length of a vertical curve for the following situation:...

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Civil Engineering

You are being asked to obtain the length of a vertical curve forthe following situation: The location having the vertical curve isaligned under a crossroads at station 199 + 20. The bottomelevation was measured as 158 m above sea level. The PI station islocated at 200 + 00 with road centerline elevation of 150 m. Thevertical curve is located at the intersection of the tangents withgrades -2.5% and 1.5%. The clear distance between the road surfaceand the overhead structure should be 5.75m. If we know that in fiveyears the road surface will be overlaid with a 100 mm asphaltconcrete pavement layer, what should be the length of the curve toallow sufficient clearance now and after five years of service.

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