Question: An equal - tangent sag curve has an initial grade of - 4 . 0 % , a final grade of + 3 . 0

An equal-tangent sag curve has an initial grade of -4.0%, a final grade of +3.0%, and a length of 1270ft. An overpass is being placed directly over the PVI of this curve. At what height above the roadway should the bottom of this sign be placed?
An equal - tangent sag curve has an initial grade

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