Reference no: EM13317271
A rectangular channel of width 12 ft has an upstream slope of 0.02 ft/ft and a downstream slope of 0.0005 ft/ft. Both reaches have lengths of 500 ft. The upstream reach has a Man- ning's roughness of 0.016 and the downstream reach has a roughness of 0.011. The design discharge is Q = 460 cfs, the low ow discharge is Q = 230 cfs, and the ood discharge is Q = 690 cfs. Problem 3a) Using the direct step method by hand with 1 step, determine the lo- cation of the hydraulic jump relative to the slope break for the design discharge. Classify the jump type and calculate the energy lost. Problem 3b) Design an Excel spreadsheet to calculate the location of the hydraulic jump relative to the slope break using a depth step size of 0.01 ft for the design discharge. All lengths and water depths must be accurate to 2 decimal places. Plot the water surface pro le relative to the slope break. Your spreadsheet will be uploaded to Moodle with the lename format of lastname rstname hw5 prob3.xls. Problem 4) In HEC-RAS, model this system as 1 reach with cross-sections every 2 ft. For all 3 discharges (labeled as: design, low, ood),
(a) Determine the water depths 10 ft from the upstream and down- stream boundaries.
(b) Determine the location of the hydraulic jumps (in ft from the slope break).
(c) Output the water surface pro le plots with all 3 discharges, including the water surface, energy grade line, and critical depth line. Hint: You only need to de ne 3 cross-sections (1 upstream one at the slope break, and 1 at the downstream location). You will be able to interpolate the intermediate cross-sections. To do this, go to Tools- XS Interpolation and choose Interpolation between 2 cross-sections. Use the required x and a linear interpolation. Also, you will need the 3 cross-sections you de ne to have the correct elevations for the designated channel slopes. It's easiest to start at the downstream reach and work upstream. Once you've created the rst cross-section, you can copy it upstream and then modify its evelation
|
What would be the projectiles initial speed
: A projectile ,was launched vertically from the surface, of the Moon rises to an altitude of 330km. What would be the projectile's initial speed
|
|
Product repositioning
: What is product positioning? Product repositioning? Why and when would Rollerblade need to reposition?
|
|
Determine location of hydraulic jump relative to slope break
: A rectangular channel of width 12 ft has an upstream slope of 0.02 ft/ft and a downstream slope of 0.0005 ft/ft. Both reaches have lengths of 500 ft. The upstream reach has a Manning's roughness of 0.016 and the downstream reach has a roughness of..
|
|
Taking an extended disability leave for pregnancy
: An accounts receivable supervisor was laid off by her employer after taking an extended disability leave for pregnancy. She claimed that the employer discriminated against her on the basis of gender and ability to bear children, stating that two male..
|
|
Determine the water depths 10 ft from the upstream
: Output the water surface pro le plots with all 3 discharges, including the water surface, energy grade line, and critical depth line. Hint: You only need to de ne 3 cross-sections (1 upstream one at the slope break, and 1 at the downstream locatio..
|
|
Find the coefficient of friction between target and surface
: mitch throws a 50 gram lump of clay with a speed of 20 m/s at a 500 gram target, find the coefficient of friction between the target and the surface
|
|
What size pipe should be used above a towns water
: Water flows from a ground storage tank that is 450 feet above a town's water distribution system. The pressure at the entrance of the system must be at least 75 psi and the demand is 1350 GPM.
|
|
Writing the code of the new function from scratch
: We want the derive class to do what the base class is doing plus some more. Can we do it without writing the code of the new function from scratch?
|
|
How insightful is the experimental analysis with the planner
: How insightful is the experimental analysis with the planner (how easily the planner solves the instances, how well the planner scales up as the instances are made larger or more complex, how well the results are reported: times, qualityof solutio..
|