An unfinished-concrete 6-ft-diameter sewer pipe flows halffull. What is the appropriate slope to deliver 50,000 gal/minof water in uniform flow?

Water flows over a spillway of a dam. At the bottom of the spillway, water flows into a rectangular concrete-finished channel (width - 50 ft) with a slope of 0.005. Let n-0.0206. 2.5 ft d, - 2.9 ft a) Calculate the velocity in the channel at the section where the depth is 2.9 ft. Use Manning's equation. (15) b) Determine Froude number at the section where the depth is 2.9 ft and classify the flow. (15) c) Classify the flow where the depth is 2.5 ft and prove your classification. (15) d) What do you expect the flow to be at depth d2 (just an educated guess)? (5)

Two channels have the same cross-sectional area, but different geometry, as shown. a. Which channel has the largest wetted perimeter? b. Which channel has more contact between water and channel wall? c. Which channel will have more energy loss to friction?

If a rectangular sharp-crested weir 1.25m long with no end contractions were to replace the triangular weir, what would be the required H in centimeters for a similar discharge? Use Francis formula.