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� � , r'. <br /> � , <br /> �-== <br /> OSTP Pressure Distribution <br /> Minnesota Polluticn Design Worksheet UNIVERSITY <br /> Coneroi A enc OF MINNESOTA � � <br /> 12. Calculate the Square Feet per Perforvtion. Recommended va(ue is 4-11 ft 2 per perforatlon. <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 Areo divided by the Total Number of Perforations. <br /> 630 ftZ .- 63 perforations = 10.0 ft2/perforations <br /> 13. Select Minimum Average Head: 1.0 ft <br /> 14. Select Perforation Discharge (GPM) based on Tabte: 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 Disrribution Piping = <br /> Table ll <br /> _ [Number of Perforated Laterals X Length of Latera(s 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 �$meter Per Foot <br /> (inchrs) (Gatlons) <br /> 18. Minimum Delivered Volume = Volume of Distribution Piping X 4 1 0.045 <br /> 1.25 0.078 <br /> 31.1 gals X 4 = 124.4 Gallons 1.5 0.110 <br /> 2 0.1 T0 <br /> man o pipe` 3 0.3$O <br /> � 4 0.661 <br /> i <br /> � pipe from pump -���nouu -"-�� -"' <br /> , <br /> .� <br /> . <br /> IEan OUtS ;� Man'rfold pipe�` <br /> � � <br /> i � <br /> i r• � i <br /> � <br /> akemate location "' - <br /> of i e ftom um � �An��a, <br /> of pipe from pump <br /> Pi ftom um <br /> Comments/Special Design Considerations: <br />