Question

ge network consists of a conduit, five pressurized pipes, and two pumps A sewage individually or in tandem. The pumps pump sewage water from a wet well (W-1), then sewage is carried through pressurized pipes (P-2, P-3, P-6, P-7 and P-10) and is ultimately discharged into a manhole (MH-5) From MH-5, sewage flows by gravity through a circular concrete conduit (Co-9) and discharges at the outfall (0-3), as shown in the schematic diagram below obtained from a SewerCAD model. that can be operated PMP-2 W. J-3 P-10 0-3 PMP.5 (a) The circular concrete conduit (CO-9) has a length of 350 m and a diameter 60 cm. The invert elevation of the conduit at MH-5 is 2.5 m and its invert elevation at O-3 is 1.8 m. Manning's n is assumed to be 0.014. Compute the sewage discharge Q when the conduit is flowing half full. (b) Also compute the Froude number that corresponds to the same discharge Q. Is the flow supereritical or suberitical?

Answer 1

4 A = 0.1413子9m2 m. 07413구) O.o14 Q= 127.5 L/s IANS Nlo J3(우)

O 90 2 em te suboutical