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A confined aquifer 30 m thick has been pumped from a fully penetrating well at a steady rate of 5000 m3/day for a long time. Drawdown at an observation well 15 m from the pumped well is 3.0 m, and drawdown at a second observation well 150 m away is 0.30 m. find the hydraulic conductivity of the aquifer.
Compute the maximum service (unfactored) concentrated live load that can be applied at 1ft from the free end of the cantilever. Use load and strength -reduction factors from ACI Code Sections 9.2 and 9.3. Also check As,min.
find the net present worth of the project,and the internal rate of return ,and the annual worth of the project?
the pressure inside a commercial airliner is maintained at 1.00 ATM. what is the net upward force exerted on a (1.0 m)(200 cm) cabin door if the outside pressure is 0.30 ATM?
a vertical curve with grade1= 3.6% meets the exit grade of -4.7% at PVI located at station 26.50. A vertical curve of 700 feet is propsed to provide the transition between the two grades.
Include immediate and consolidation settlements, but ignore secondary compression. In your calculation, use three sublayers with thicknesses of 4 ft, 8 ft and 16 ft for the top, middle and bottom layers. Ignore any settlement caused by the dense s..
Aluminum ion (Al3+) is present in an industrial wastewater at 3 mg/L. The treatment facility wants to precipitate out the aluminum until there is only 0.2 mg/L remaining. What pH is required to acheive this aluminum ion concentration
A siphone generates a flow of 1 ft/sec thru a 1 inch OD, 3/4 ID hose. A) What height difference is needed to generate this flow B) What height for 10 ft/sec C) What for 100 ft/sec
Using darcy-weisbach equation, calculate the major friction head loss for a 24 inch diameter, 120 ft long pipe that can carry water with a flow rate of 5 cfs. Assume the temperature of water is 70 deg F and the roughness of the pipe is 0.0016 ft.
Determine the inclination θ of the ladder if the coefficient of static friction between the friction pad A and the ground is μs= 0.3. Assume the wall at B is smooth. The center of gravity for the man is at G.
consider the cantilever beam-mass system. formulate and solve the minimum weight design.
A concrete mix witha 3-inch slump, w/c rtion of .5, ans sand with a fineness modulus of 2.4 contains 1700 lb/yd^3 of coarse aggregate. compute the required weight of coarse aggregate per cubic yard.
To determine the effect of fuel grade in fuel efficiency, 80 new cars of the same make with identical engines, were each driven for 1000 miles. Forty of the cars ran on regular fuel, and the other forty received premium grade fuel.
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