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1 <br /> , 11/26/2002 Page 2 <br /> 1 <br /> ' Pump Selection Procedure For Pressure Qistribution <br /> Gallons Per Minute Requirement <br /> ' Length of Laterals = 58 feet <br /> Outside Diameter of Laterals = 2 inches <br /> Number of Perforated Laterals = 4 each <br /> ' Orifice Spacing = 3.0 each <br /> Number of Orifices Per Lateral = , 19 each <br /> Total Number of Orifices = 81 each <br /> ' Square Feet Per Orifice = 8.1 feet <br /> Minimum Flow Rate per Orifice = 0.433 gpm <br /> Gallons Per Minute Pump Requirement = 35 gpm <br /> ' <br /> Pump Head Requirements <br /> ' Supply Line Diameter= 2 inches <br /> Supply Line Length = 50 feet <br /> ' Length of Distribution Header= ; 9 feet <br /> Diameter of Distribution Header= 2 inches <br /> ' Head Loss Through Header= 0.2 feet <br /> Head Loss through Laterals = 0.2 feet <br /> Lift to Header= 10 feet <br /> ' Residual Head at Last Orifice = 1 feet <br /> Add On Head Losses = 5.0 feet <br /> Head Loss through Supply Line = 1.3 feet <br /> ' Total Head Requirement = 18 feet <br /> 1 <br /> ' <br /> 1 <br /> ' <br /> ' <br /> ' <br /> 1 <br />