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� ��.��. OSTP Pressure Distribution <br /> Minnesota Poitution Desi n Worksheet UNIVERSITY <br /> ControlA ency � OF MINNES�OTA �� <br /> 12. Calcutate the Square Feet per Perforotion. Recomme�ded va(ue is 4-f i ft Z per perforQtion. <br /> Does nat app(y to At-Grades <br /> a. Bed Area = Bed Width (ft)X Bed Length (ft) <br /> 10 ft X 50 ft = 500 ft2 <br /> b. Squore Foot per Perforation = Bed Area d9vided by the Total Number of Perforatfons. <br /> 500 ftZ s 51 perforations e 9.8 ftz/perforations <br /> 13. Select Minimum Averoge Head: 1.0 ft <br /> 14. Setect Perforation Discharge (GPM}based on Table: 0.74 GPM per Pertoration <br /> 15. Determine required�tow Rdte by muttiplying the Totol Number of Perfs. by the Perforatlon Discharge. <br /> 51 Perfs X 0.74 GPM per Perforation= 38 GPM <br /> 16. Volume of Liquid Per Foot of Distribution Piping (Table 1l): 0.170 Gatlons/ft <br /> 17, Volume of Distrlbutfion Pip�ng = - - - - --- <br /> �� `Table 11 ' <br /> _ [Number of Perforoted Lcrterals X Length of Laterats X (Votume of votume of Liquid in <br /> Liquid Per Foat of Distribution Piping] �P� ` <br /> � L� �� - � Pipe Liqatd <br /> 3 X 48 ft X 0.170 al/ft 24.5 Gallons �an►eter Aer�'oat <br /> (�nchrs) (Ga11ot►s)' <br /> 18. Minimum Detivered Volume=Votume of pistribution Piping X d 1 0.045 <br /> 1.25 O.D7$ <br /> 24.5 gals X 4 = 97.9 Gatlons _1,5 Q.110 <br /> 2 0.17U <br /> mam p�pe� 3 0.380 <br /> i 4 0.8b1 <br /> � __._--------- ____..__._....__.� <br /> � __tleawuts - . __ .- __ <br /> pipe from pump <br /> '�' ManiloW pipe. <br /> lean ouu � <br /> f �• i � <br /> alternate location � <br /> oi ' from 'Auanm�aatbn <br /> �P��P�P <br /> Pi ttom <br /> Comments/Speciat Design Conside�ations: <br />