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(a) A culvert under a road must be 35m long, have a slope of 0.0035 and carry 4m^3/s. The crown of the roadway is 4.2m above the culvert invert. Assume the outlet will discharge freely. What size of corrugated -metal pipe (CMP: 68mm x13mm corrugation, n=0.025) culvert would you select? Square -edged inlet (Ke=0.5) will be used and coefficient of discharge of cd=0.65. A freeboard of 0.6m will be usedin the design.Head loss due to pipe friction using Manning's n isHf=[(19.63*n^2*L)/R^1.33]V^2/(2g)
L-length of pipe in mR=hydraulic radius (m)N=manning's nV =velocity (m/s)(HINT: Assume HW controlling since TW flow freely, the entrance is submerged,and look at 2 cases-(1) Full pipe flow(2) Not Full pipe flow
(b) A hydrologist made a unit conversion error in his flow estimation. The reported flow rate is now 8m^3/s instead of 4m^3/s. What is your new design? Consider a rounded inlet and outlet design and using smoother concrete pipes or box culverts. For similar cross sectional area, the cost of concrete conduit per unit length is 1.5 times that of the CMP.
water is pumped into an irrigation pond at 250 gal/min for 24 hours. the pond area is 2500 square feet. Determine the depth of water in the pond .Provide answer in ft and m
The column is constructed from high-strength concrete and four A-36 steel reinforcing rods. If it is subjected to an axial force of 37.5 kN , determine the required diameter of each rod so that one-fourth of the load is carried by the concrete
For each radio produced during months 1 and 2, a $10 variable cost is incurred; for each radio produced during month 3, a $12 variable cost is incurred. The inventory cost is $1.5 for each radio in stock at the end of a month.
Mike and Susan hope to retire a few years early, they decided to pay closer attention to the predicted amount of retirement benefits and do some analyses on the numbers.
Determine the operating speeds of the machine at which the machine's steady-state amplitude is less than 0.2 mm. Take keq = 3 EI/L3.
Draw a graph showing the effluent concentration as a function of time for : a. Zero order CMFR and PFR with the same influent concentration and reaction rate. b. First order CMFR and PFR with the same influent concentration and reaction rate.
a level test track has a coefficient of road adhesion of 0.80, and a car being tested has a coefficient of rolling friction that is approximated as 0.018 for all speeds. the vehicle is tested unloaded and achieves the theoretical minimum stop in 1..
A simple supported beam 6m long is composed of two C200x28 channel RIVETED FRONT TO FRONT . What uniformly distributed load can be carried in addition to the weight of the beam w/o exceeding a flexural stress of 125MN/m^2
a round steel rod, 25 mm in diameter, subjected to a bending moment of 160 Nxm. calculate the maximum bending stress.
If this GCL is used as a liner beneath a 55-ft high landfill with a waste unit weight of 45 lb/ft3, what will be the hydraulic conductivity of the GCL at the bottom of the landfill
The Three Gorges Dam in China will be the world's biggest when complete. When did the construction start
The flow out of a reservoir is 2 L/s. The reservoir surface is 5 m x 5 m. How fast is the reservoir surface dropping?
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