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You are asked to design a pump station to conveywaste water at a flow rate of 250 cubic meters per hour to anequalization tank. A velocity of at least 3ft/s must be maintained in the pipe to prevent deposition and provide scouring of any previously deposited solids. However, a maximum velocity of 10ft/sis prescribed to prevent oversizing the pumps. Due to the nature ofthe waste water, you want to target the high end of this range.Find the proper diameter pipe to the nearest 2" to achieve thisdesign objective.
A supervisor is sitting at her desk illuminated by a 180 candela source 3 feet above it. She is writing with green ink (reflectance=30%) on a yellow note pad (reflectance=60%). What is the illumination on the note pad
The volume of the first pond is 5.0 million gallons, and the second pond is 3.0 million gallons. Assuming complete mixing within each pond, find the BOD concentration leaving each pond
Use modern software tools to analyze a structural system of a building.
A sprinkler system uses an outdoor reservoir at El 50. A fire pump moves Q = 3 ft^3/sec through a 1.0' dia pipe 300' long to an 8" dia main at El 200. To distribute water to sprinklers, a pressure head at the pipe junction hp =100' is required.
Could all the people in china hold back the water behind the three gorges dam?
What are minerals and sketch different types of mineral crystal forms and list different types of rock forming minerals. Describe with examples the importance of mineral identification in engineering applications.
Calculate the compacted cubic yards per hour if a compactor with a 5-ft drum width travels at 3 mph over a 10-in. lift of aggregate base course with 4 passes required to meet density specifications under average operating conditions.
A tracer study was conducted to assess groundwater velocity and showed that a slug of a conservative tracer took 34 days to travel the 10-m distance between two wells.
An industrial plant presently discharges a chemical (W=2000 * 106 gr/yr) to the lake. In addition, the inflow stream also contains the same chemical at a concentration of 15 mg/L. Note that the volumetric inflow and outflow are equal.
It was observed that the truck traveled a distance of 120 ft after the brake was engaged before coming to a complete stop. If instead the driver brings the truck to a velocity of 90 mph and completely engages the brake
Air at 80oC and a pressure of approximately 1350 kPa abs flows in a 20-mm-diameter tube. What is the minimum turbulent flow rate
The small sphere of mass (m) is suspended initially at rest by the two wires. If one wire is suddenly cut, determine the ratio (k) of the tension in the remaining wire immediately after the other wire is cut to the initial equilibrium tension.
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