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OSTP Pressure Distribution <br /> Minnesota Pollution Desi n Worksheet UNIVLRSITY �,. <br /> . .�� <br /> Control Agency � OF MINNESOTA �'�\�' <br /> 12. Catculate the Squore Feet per Perforation. Recommended va(ue is 4-11 ft z per perforation. <br /> Does not apply to At-Grades <br /> a. Bed Areo = Bed Width (ft) X Bed Length (ft} <br /> 10 ft X 63 ft = 630 ftz <br /> b. Square Foot per Perforotion = Bed Areo divided by the Tota(Number of PerforQtions. <br /> 630 ft2 - 63 perforations = 10.0 ftz/perforations <br /> 13. Select Minimum Averoge Head: 1.0 ft <br /> 14. Select PerforQtion Discharge (GPM} based on Table: 0.56 GPM per Perforation <br /> �5• Determine required Flow Rate by multiplying the Toto!Number of Perfs. by the Perforation Disrharge. <br /> 63 Perfs X 0.56 GPM per Perforation = 36 GPM <br /> 16. Volume of Liquid Per Foot of Distribution Piping (Tvble ll): 0.170 Gatlons/ft <br /> 17. Yolume of Distribution Piping = 7'able �I <br /> _ [Number of Perforated Laterals X Length of Laterals X (Volume of volume of Liquid in <br /> Liquid Per Foot of Distribution Piping) ; Pipe <br /> Pipe Liquid � <br /> C� X 61 ft X 0.170 gaUft = 31.1 Gallons '' Diameter Per Foot ' <br /> (inches) (Gallons) !, <br /> 18. Minimum Delivered Votume = Volume of Distribution Piping X 4 1 0.045 ' <br /> 1.25 0.078 <br /> 31.1 gals X 4 = 124.4 Gallons 1.5 0.110 <br /> 2 0.170 <br /> mam o pipe� 3 0.3$O <br /> � <br /> � 4 0.661 <br /> � <br /> � __. _ <br /> pipe from pump a�a�outs �- <br /> lean outs Mani(old pipe, <br /> ♦ <br /> �-�• � i <br /> aitemate location -� - <br /> of i e from um �Altemate location <br /> of pipe irom pump <br /> Pi e from um <br /> Comments/Special Design Considerations: <br />