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1. The variation of (2S/dt + Q) with Q, of a basin is given by Q = 0.0015(2S/dt + Q)2 + 0.195(2S/dt + Q) - 0.3833. The outlet structure is a weir with crest length L = 1.5 m set at elevation Y = 30.5 m and discharge coefficient kw = 0.4. The storage of the basin increases linearly from 0 at Y = 30.5 m to 16,980 m3 at Y = 35 m and the initial water level is at Y = 30.9 m.
(i) Determine the peak outflow rate when the following inflow hydrograph is routed through this basin.
(ii) What is the design storage and water surface elevation at the peak outflow rate.
The mass m, stiffness k, and natural frequency fn of an undamped SDF system are unknown. These properties are to be determined by harmonic excitation tests. at an excitation frequency of 4 Hz, the response tends to increase without bound.
A reverse osmosis plant desalinates 5X10^6 L/day of feedwater containing 1500 mg/L of salts, yielding 3X10^6 L/day of product water with 75 mg?l of salt. What would the salt concentration be in the brine?
The tank is filled so quickly that the process is adiabatic and the seawater leaves the tank at 15oC. Determine the final temperature and mass of the air in the ballast tank.
The wastewater discharge flow rate is 0.3 m3/s. The coliform first-order death rate in seawater is approximated 0.3 h-1. The current carries the wastewater plume toward the beach at a rate of 0.5 m/s.
Determine what fair amount she should receive if she decides she want to be paid: a. In 2 equal installments - one immediately (at T=0) and one at the end of month 36.
A freeway exit ramp has a single lane and consists entirely of a horizontal curve with a central angle of 90 degrees and a length of 628 ft. If the distance cleared from the centerline for sight distance is 19.4 ft
The foof of the culvert will be located 3 m below ground surface. Currently the groundwater level is at ground surface. But, after installation of the culvert, the groundwater level is expected to drop 2 m below ground surface.
Each of the three partners realizes that in order for the firm to continue at the present rate of growth a realistic business continuation plan must be in place which would include a viable by-sell agreement between the shareholders.
A pump of 80% efficiency lifts water from one large open tank to another; the difference in water surface elevations is 20 feet. The pipe is relatively smooth (f = 0.0122), and has 3 elbows, each with a loss coefficient of 2/3.
A rod was held on point B and the telescope is inclined so that the horizontal cross line of the transit intersects the rod at the 5.2 ft mark. If the reading on the vertical limb of the transit was +25° 19',
A vertical curve is formed when a rural highway passes under a bridge joining a -8% grade to the horizontal grade satisfying the requirement for safe speed of 90 Km/hr . Determine the minimum clearance required betewen the highway pavement surface..
A water-filled U-tube manometer is used to measure the pressure inside a tank that contains air. The water level in the U-tube on the side that connects to the tank is 5 ft above the base of the tank.
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