Elevation difference between the two road segments


Problem:

A crest and sag curve connect a 0% road segment with a +2% road segment. The two curves connect with each other (PVI=PVC) and share a 3% common grade.

Required:

Question: If the design speed of the curves is 45 mi/h, what is the elevation difference between the two road segments?

Note: Could someone please give me a step by step solution?

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Civil Engineering: Elevation difference between the two road segments
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