8.48 A new pump is required for the water supply system of a highrise office building. The system requires 0.06 m3/s of water pumped to a reservoir at the top of the tower 340 mabove the street. City water pressure at the street-level pump inlet is 400 kPa gage. The piping is to be commercial steel, the overall length is 20 percent greater than the tower height, and there are fittings every 10 m with loss coefficients of 0.2. Determine the minimum diameter required to keep the average water velocity below 3.5 m/s in the pipe. Calculate the pressure rise required across the pump and estimate the minimum power needed to drive the pump.