A culvert flowing partly full is the same as an open channel connecting two reservoirs. A...

A culvert flowing partly full is the same as an open channel connecting two reservoirs. A 3.05 3.05m (1010 ft) box culvert (n = 0.015) 61.0 m (200 ft) long is used for cross-drainage under a highway. The headwater depth(H) is 3.05 m (10.0 ft), and the tailwater depth (Yt) is less than critical depth. Compute the discharge rate through the culvert for a culvert slope (So) of 0.02 and 0.002. Use a contraction loss coefficient at the entrance of 0.5 and an expansion loss coefficient at the outlet of 1.0.