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A 816-ft sag curve (-2% to +4%) has its PVC at station 8+00 and elevation 125.64’....

A 816-ft sag curve (-2% to +4%) has its PVC at station 8+00 and elevation 125.64’.

a. What is the design speed of this curve?

b. Determine the station and elevation of the point on the curve where the slope is +1%.

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