Engineering, 25.02.2020 02:54 coolgirl10020031

An overpass is being built over the PVI of an existing equal-tangent sag curve. The sag curve has a 70 mi/h design speed and G1=-5%, G2=+3%. Determine the minimum necessary clearance height of the overpass and the resultant elevation of the bottom of the overpass over the PVI. Ignore the cross-sectional width of the overpass.

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An overpass is being built over the PVI of an existing equal-tangent sag curve. The sag curve has a...