Entrance conditions = square edge, loss coefficient, K= 0.5
Downstream conditions = free jet
Establish the rating curve (discharge versus headwater elevation above the invert at the entrance) for rising head conditions over a discharge range from 0 to 13.5 m3/s. neglect the velocity of approach. Determine the minimum elevation of the road surface assuming a free board of 300 mm to avoid any flooding of the highway.