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OSTP Pressure Distribution <br /> Minnesota Pollution Design Work$heet UNIVERSITY <br /> Control Agency ()I' MI N N I:SOTA <br /> 12. Calculate the Square Feet per Perforation. Recommended value is 4-11 ft2 per perforation. <br /> Does not apply to At-Grades <br /> a, Bed Area = Bed Width (ft) X Bed Length (ft) <br /> 16 ft X 63 ft = 1008 ft2 <br /> b. Square Foot per Perforation = Bed Area divided by the Total Number of Perforations. <br /> 1008 Ift 2 105 perforations = 9.6 ft2/perforations <br /> 13. Select Minimum Average Head: 1.0 ft <br /> 14. Select Perforation Discharge (GPM) based on Table: 0.41 GPM per Perforation <br /> 15. Determine required Flow Rate by multiplying the Total Number of Perfs. by the Perforation Discharge. <br /> 105 1 Perfs X 0.41 GPM per Perforation = 44 GPM <br /> 16. Volume of Liquid Per Foot of Distribution Piping (Table ll) : 0.110 Gallons/ft <br /> 17. Volume of Distribution Piping = <br /> Table II <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 /> 5 X 61 ft X 0.110 gal/ft = 33.6 Gallons Diameter Per Foot ', <br /> (inches) (Gallons) <br /> 18. Minimum Delivered Volume = Volume of Distribution Piping X 4 1 0.045 <br /> 1.25 0.078 <br /> 33.6 gals X 4 = 134.2 Gallons 1,5 0,110 <br /> 2 0.170 <br /> manifold pipe` 3 0.380 <br /> i 4 0.661 <br /> / <br /> / aqm nt <br /> pipe-rtxn pump <br /> V anifoid pipe, <br /> Jean outs <br /> alternate location <br /> Of Pipe from ul-I AltPrnatp inrAtion <br /> of pipe from rump <br /> Pie`ram punp <br /> Comments/Special Design Considerations: <br />