trapezoidal channel is designed (not most efficient channel) to carry 24+Z m 3 /s on a slope of 0.002 m/m. The channel is unlined, and in order to prevent erosion, the maximum allowable velocity is 1.2 m/s. The side slope must not be steeper than 1.5H on 1V, and the Manning ‘n’ value is 0.03. In order to meet these requirements, what flow depth and bottom width should be used? Z=33

A very long trapezoidal channel has a bottom width of 18 ft, side slope of 2, longitudinal bottom slope of 0.01, Manning roughness factor of 0.020, and it carries 800 cfs. The normal depth is 9.25 ft and the critical depth is 3.45 ft. The flow depth at a section along this channel is 3.70 ft. The flow depth 10 ft upstream is most likely to be Select one: a. 5.20 ft b. 3.79 ft c. 3.45 ft d. 3.61 ft

A trapezoidal channel is lined with rock riprap and has a bottom width of 20 ft, 1.5:1 side slope (horizontal to vertical), a bottom slope of 0.0010 ft/ft, and a Manning n of 0.030. At the end of the canal the flow is critical before it hits an overfall with a spillway structure. Determine the critical and normal depth and sketch the water surface profile. (use a discharge of 1500 cfs)

A 6.0 m rectangular channel carries a of 30 m³/s at a depth of 2.5 m. the channel width that produces discharge Determine the critical depth.