width of rectangular channel = 3.6 meters discharge = 2.7 m^3/s Assume n = 0.012 What is the critical slope of this wooden flume?
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width of rectangular channel = 3.6 meters
discharge = 2.7 m^3/s
Assume n = 0.012
What is the critical slope of this wooden flume?
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- A trapezoidal channel with a 5-m bottom width and side slope m = 1.0 discharges 35 m3/s. The slope is 0.004 and is paved with smooth concrete (n = 0.012). a. What is the critical depth? b. What is the normal depth? c. Is it a mild slope, or steep?Hint: Compare critical depth with normal depth OR find the critical slope (??) and compare it with bed slope(?0) d. Is the depth increasing or decreasing upstream? Why would that be (e.g. a spillway, dam, etc.)?Hint: For the first part, use ????=?0−?1−??2 to show if the depth is decreasing/increasing (either by finding Fr and S, OR by simply using the values of ?, ?? and ?0 to figure out if the fraction is +/-). e. How would you conceptualize the flow – what regime (e.g., S1, S2, S3, M1, M2, M3 in Figure 10.20)? f. Determine the depth 3.3 m upstream from a section that has a measured depth of 1.69 m.Hint: If you are using MATLAB, solve the GVF differential equation (????=?0−?1−??2) and find flow depth y at location x = -3.3 m. If you are using…A trapezoidal channel section having base 8m, depth 4m and the hydraulic radius is 2.36m. the side slope isA canal cut in rock (n — 0.030) is trapezoidal in section with a bottom width of 6.10 m and side slopes of 1 on 1. The allowable average velocity is 0.76 m/s. What slope will produce 5.66 m /s?
- A trapezoidal channel has a bottom section of 4.5m and a side slope of 1.5V:2H. Calculate the area.A cement lined rectangular channel 6m wide carries water at the rate of 30m3/s. Find the value of Manning’s constant, if the slope required to maintain a depth of 1.5m is 0.00126422.A rectangular channel 4.59 m. wide by 1.35 m. deep is lined with a smooth stone (n = 0.014), well laid, and has a hydraulic slope of 0.0198. What would be the base (in meters) considering the most efficient proportion of the rectangular open channel? Round off to two decimal places.
- A vertical cut is made through a homogeneous soil mass (c=20kPa, φ=20deg, γ=16.5kN/m3). Using Culmann's method, determine the safe depth of the cut, taking a factor of safety of 2.0.a v-shaped channel, build of unplanned timber 0.080 m/ with a velocity of 2.5 m/s. each of the sides makes an angle of 45° with the horizontal. determine the slope if n = 0.014 determine the slope with complete solution.A vertical cut is made through a homogeneous soil mass (c=20 kPa,ϕ=20°,γ=16.50 ?? ?3 ⁄ ). Estimate thesafe depth of the cut, taking a factor of safety of 2 using Culmann’s method
- A trapezoidal clean excavated earth channel with bottom width 5ft, side slopes 3:1 (H:V) and flow depth 1ft needs to discharge 150ft3/s. What should be the bottom slope, S0?Find the required slope of a rectangular open channel when the water flows at a rate of 20,000 L/s, having a base width of 4m and depth water depth of 2.5m. (n = 0.013)A trapezoidal channel with a bottom width of 5 and slide slopes having a ratio of 3H:1V, conveys water at 19 m3/s. If n = 0.012, what is the critical depth? Answer is 0.936
