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� r� OSTP Pressure Distribution ,� <br /> MinnesotaPollution Desi n Workshe UNIVERSITY �� <br /> ControlA ency g et OF MINNESOTA "i\�' <br /> 12. Calcutate the Square Feet per Perforotion. Recommended value is 4-11 ft 2 per perforotion. <br /> Does not app(y to At-Grades <br /> a. Bed Area = Bed Width (ft) X Bed Length (ft) <br /> 10 ft X 63 ft = 630 ft2 <br /> b. Square Foot per Perforation = Bed Area divided by the Total Number of Perforations. <br /> 630 ft2 - 63 perforations - 10.0 ft2/perforations <br /> 13. Select Minimum Average Head: 1.0 ft <br /> 14. Selett Perforotion Dischorge (GPM) based on Table: 0.56 GPM per Perforation <br /> �5• Determine required Ftow Rote by muitiptying the Totat Number of Perfs. by the Perforation Discharge. <br /> 63 Perfs X 0.56 GPM per Perforation = 36 GPM <br /> 16. Volume of Liquid Per Foot of Distribution Piping (Table ll): 0.170 Gatlons/ft <br /> 17. Volume of Distribution Piping = _-____ -__---__ <br /> Table II <br /> _ [Number of PerforQted Laterats X Leng[h of Loterots X (Votume of volume of Liquid i� ' <br /> Liquid Per Foot of Distribution Piping] pipe <br /> Pipe Liquid <br /> C� X 61 ft X 0.170 gat/ft = 31.1 Gallons Diamete� Per Foot . <br /> (inches) (Gallons) <br /> 18. Minimum Delivered Votume = Votume of Distribution Piping X 4 1 0.045 <br /> 1.25 0.078 <br /> 31.1 gats X 4 = 124.4 Gallons 1.5 0.110 <br /> 2 0.170 <br /> mam o pipe� 3 0.380 <br /> ' 4 0.661 <br /> � -- ___---_—__ <br /> ' - c�earrouis - -__ ___-- <br /> p�pe from pump _ <br /> lean outs <br /> MaodoW pipe, <br /> ♦ <br /> � �. <br /> • <br /> aiternate locatron � --- _ <br /> oi i from m <br /> ' Altemate laatwn <br /> of p�pe from pump <br /> R from m <br /> Comments/Special Design Considerations: <br />