A fire pump delivers water through a 150-mm-diameter main to a hydrant to which is connected a 150mm diameter hose, terminating in a nozzle 25mm in diameter. The nozzle is 3m above the hydrant and 18m above the pump. Assuming a total friction loss of 8.5m from the pump to the base of the nozzle, and a loss in the nozzle of 6% of the velocity head in the jet, and neglecting air resistance, (1) what should be the velocity at the tip of the nozzle in order to throw a stream 24m above the tip of nozzle? (2) what is the power system loss in kW? (3) what should be the gage pressure at the pump?

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