Ex 9-4 sprinkler networks was designed to operate 5 laterals at the same time ,any lateral composed of 30 sprinklers with 0.36 Lps discharge for one sprinkler ,required pressure head at the inlet 393 kPa,elevations and distances are: point Pump,p A B C D Elevation,m 48.4 48.45 48.75 47.85 Distance,m 36 18 18 18 Main line is 200 mm aluminum pipe, C=140, suction head with losses 2.35 m. Calculate discharge of pump and its dynamic head. If the efficiency of pump 60% find the pump horse power. 47.55 18 E 47.25

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