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OSTP Pressure Distribution <br /> Minnesota Pollution UNIVERSITY ,?; <br /> Control Agency Design Worksheet OF MINNESOTA :''' +-�.��- <br /> 12. Calculate the Square Feet per Perforation. Recommended value is 4-11 ft 2 per perforation. <br /> Does not apply 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. Select Perforation Discharge (GPM) based on Table: 0.56 GPM per Perforation <br /> 15. Determine required Flow Rate by multiplying the Total 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 11): 0.170 Gallons/ft <br /> 17. Volume of Distribution Piping = <br /> Table 11 <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 /> 3 X 61 ft X 0.170 gal/ft = 31.1 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 /> 31.1 <br /> gals X 4 = 124.4 Gallons 1.5 0.110 <br /> 2 0.170 <br /> manifold pipe` 3 0.380 <br /> 1 4 0.661 <br /> ' Cleanouts — _ <br /> pipe from pump <br /> L•----:........./ `' i Manifold pipes J <br /> dean outs - <br /> V • J <br /> alternate location '/ <br /> V of pipe from pump � — `�./`Alternate location <br /> ` of pipe from pump <br /> Pipe frompump <br /> Comments/Special Design Considerations: <br />