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An 800 ft vertical curve with equal legs is provided for a highway crest vertical curve. The grade of the back tangent is 2% and

An 800 ft vertical curve with equal legs is provided for a highway crest vertical curve. The grade of the back tangent is 2% and the grade of the forward tangent is negative 2%. The elevation of PVI is 1200 ft. If the PVI is at station 11+00 and the PVC is at station 7+00, what is the tangent offset at station 8+00?

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