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OSTP Pressure Distribution <br /> Minnesota Pollution ' UNIVERSITY � <br /> Control Agency Des�gn Worksheet OF MINNESOTA y,,,� <br /> 12. Calculate the SquQre Feet per Perforation. Recommended value is 4-11 ft1 per perforatfon. <br /> Does not appl y to At-Grades <br /> a. Bed Area = Bed Width (ft) X Bed Length (ft) <br /> 10 ft X 63 ft = 630 ftZ <br /> b. Squcrre Foor per Perforation = Bed Area divided by the Total Number of Perforations. <br /> 630 ftz - 63 perforations = 10.0 ftz/perforations <br /> 13. Select Minimum Average Head: 1.0 ft <br /> 14. Select Perforation DischQrge (GPM) based on Table: 0.56 GPM per Perforation <br /> 15. Determine required F(ow Rate by multiplying the Toto(Number of Perfs. by the Perforation Discharge. <br /> 63 Perfs X 0.56 GPM per Perforation = 36 GPM <br /> 1 b. Vo(ume of Liquid Per Foot of Distribution Piping (Tab(e ll): 0.170 Gallons/ft <br /> 17. Vo(ume of Distribution Piping = <br /> T�le it <br /> _ [Number of Perforated Latero(s X Length of LaterQ(s X (Volume of Volume of Liquid in <br /> Liquid Per Foot of Distribution Piping] � pipe <br /> Pipe Liquid <br /> �_� X 61 ft X 0.170 gal/ft = 31.1 Gallons Diameter Per Faot <br /> (inches� (Galtons) <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 0.380 <br /> i <br /> � 4 0.661 <br /> � -Cleanouts ----- - <br /> pipe from pump ' <br /> . <br /> .' <br /> . <br /> . <br /> lean outs � <br /> i Manifold pipe�` <br /> ♦ ' <br /> � <br /> � r• f � <br /> . <br /> alternate location --"--- <br /> of i e from um �Aitemate location <br /> of pipe fram pump <br /> �i e(rom m <br /> Comments/Special Design Considerations: <br />