The channel is made of unfinished concrete (Manning's friction factor, n = 0.014). If the downward slope is 0.0008, determine the flow of water through the channel when y = 4 m as shown in the figure. ground surface 4 m -3m

For the Venturi meter shown in the figure, the deflection of mercury in the differential gage is 14.3 in. Determine the flow of water through the meter if no energy is lost between A and B.

The tank shown drains through a triangular weir whose flowrate is described by the equation given. Determine the time it will take for the tank to drain from completely full (h = 5 ft) to 5.25 feet deep (h = 0.25 ft) assuming there is no flow into the tank. Volumetric Flowrate h=5 ft + 5 ft 3 ft³ S = 2.48 h².5 (for h in feet) 10 ft -20 ft- -20 ft-

Water at 15°C flows at a depth of 0.25 m with an average velocity of 7 m/s in a rectangular channel. Determine (a) the critical depth, (b) the alternate depth, and (c) the minimum specific energy.

6-22. A rectangular channel with 20 ft width, S = 0.006, and n = 0.015, carries & discharge of 200 efs. Compute the normal depth and velocity. 6-23. Using the Manning formula, determine the normal depths in channels having the following sections when Q = 100 cfs, n = 0.015, and S = 0.0020: