Design Problem: Design a pipeline and pump station to pump 100 MGD of water to the Mississippi river. To reduce the required horsepower of the pumps, the flow will be pressurized to the top of the levee and then flow by gravity to the outfall. The invert elevation of the pipeline at the top of the levee can be up to 48.61 at station 135+38.34. The outfall to the pipeline should be at Station 155+55 at an invert elevation of -44.63 feet. The grade (ground elevation) information is also located in a spreadsheet on ramct. The wet well elevation of the pump station is 21 feet and is located at 97+15.
a) Draw detailed pipe profile that includes the ground, the hydraulic grade line, the pipe invert, any piping in the pump station and notation for bends, air release valves, etc.. The pump station design can be produced separately. Use the water distribution system guidelines and pump station guidelines posted on ramct to provide guidance on the placement of valves, etc. An example profile and plan are attached to this assignment
b) Generate a system curve for the pumping system assuming the pipeline is new. You can use the Hazen Williams method for this design. Turn in your system curve spreadsheet.
c) Choose the pipe material, pump curves, and number of pumps. Use the pump curves on the website below to guide your pump selection. Turn in the spreadsheet and charts with the overlaid pump curves and system curves. (It is often easiest to take the pump info off the pump curves and put it into excel at the early stages in your design.) Supply a table that shows the tradeoffs in terms of efficiency, total horsepower, operating costs (assume 0.08$/kw-hr) for combinations of pump models and numbers of pumps (minimum of 5 combinations).
d) Check your pump station design and pump choices for cavitation. Turn in these calculations.