Question: A + 3 . 9 % grade intersects a - 1 . 9 % grade at station 2 0 + 5 0 . 0 0

A +3.9% grade intersects a -1.9% grade at station 20+50.00 and elevation 1005.0ft. a) Using AASHTO
determine the minimum length vertical curve for design speed of 50mph, calculate the station of the PVC
(BVC) and the elevation of the middle point of the curve. b) Determine the same using the Caltrans
Highway Design Manual (HDM).
A + 3 . 9 % grade intersects a - 1 . 9 % grade at

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