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a buried horizontal concrete pipe (n=0.012) of unknown length needs to be replaces. the length is not known because the original plans for the pipeline route have been lost. the pressure head drop along the segment that needs to be replaced is 29.9 ft.
If the flow rate is 30.0 cfs what length of new pipe is needed?
How much would the answer change (in percent) if the n value was difficult to determine and could be assignes a value of 0.013 instead of 0.012?
Assume minor loses are negligible and verify your results with computer software
Water in a household plumbing system originates at the neighborhood water main where the pressure is 480kPa, the velocity is 5m/s, and the elevation is 2.44 m. A 19 mm (3/4-in) copper service line supplies water to a two-story residence
The current removal efficiency is 96% for an air flow rate through the separator equal to 18 m3/s. Due to a process change, the air flow rate is expected to increase to 22 m3/s.
Is the system within membrane manufacturer's warranty requirement of maximum flux rate of 14 gfd? What is the annual power cost of the RO system?
A roadway has a 4% grade intersecting a -7% grade at at station 18+50.00. The grades are connected by an 800 foot vertical curve. A sign is proposed to be installed at Station 15+00.00. The bottom of the sign is 7 feet above the roadway.
Determine the cycle time for a single engine scraper rated at 21 cy heaped that is used to haul material from a pit to a fill 900 ft away under severe conditions. The average haul speed will be 14 mph and the average return speed will be 20 mph.
A simple highway curve is planned to connect two horizontal tangents that intersect at sta. 2500 + 00.00 at an external angle of 52 degrees. For a design speed of 60 mi/hr and a curve radius of about 1.25 times the minimum allowable
Consider a beam of length 1.5L(meters) with hinge support and roller support from both the ends (respectively left and right) at distance of L/4. The beam is subjected to triangular loading from 0 to q KNper meter.(left to right)
Assume the microorganisms are 55 percent efficient at converting food to biomass, the organisms have a first-order death rate constant of 0.05/day, and the microbes reach half of their maximum growth rate when the BOD5 concentration is 10 mg/L
A 400ft equal-tangent sag vertical curve has its PVC at station 200 + 00 and elevation 250ft. The initial grade is -5.0% and the final grade is +2.5%. Determine the elevation of the lowest point of the curve.
determine a dollar amount on December 31st , 2011 FOR $1000 equal payments made at the end of each of the previous 7 years including the current year. use an effective interest rate of 10% compounded annually.
The heat exchanger consists of 12 m of copper tubing that is 2 cm in diameter with 19 return bends. The flow rate is 3 x 10-4 m3/s. Water enters at 20 C and exits at 80 C. The elevation difference between the entrance and the exit is 0.8 m.
Draw the FBD and the shear and bending moment diagrams. Label all minimums, maximums and zero crossing points as well as the slopes as constant, linear or parabolic.
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