A negative 5% grade meets a positive 3% grade at vertex elevation 146.24m directly under an...

A negative 5% grade meets a positive 3% grade at vertex elevation 146.24m directly under an overpass bridge whose underside is at elevation 152.74 and carries another road across the grades at right angles.What is the longest parabolic curve that can be used to connect the two grades and at the same time provide at least 5 meter clearance under the bridge at its center line? If the underside of the bridge is level and is 12 meter wide, Find the actual clearance at the left and right of the bridge. Draw the diagram.

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Ally Wells answered 2 months ago

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