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OSTP Pressure Distribution <br /> Desi n Worksheet UNIVERSITY : <br /> Minnesota Pollution � --�- <br /> ControlAgency � OF MINNESOTA "�--'�_1_� <br /> 12. Calculate the Square Feet per Perforotion. Recommended value is 4-11 ftz per perforation. <br /> Does not app(y to At-Grades <br /> a. Bed Area = Bed Width (ftj X Bed Length (ft) <br /> 10 ft X 63 ft = 630 ft� <br /> b. Square Foot per Perforotion = Bed Area divided by the Tota( 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 Dischorge (GPM) based on Table: 0.74 GPM per Perforation <br /> 15. Determine required F(ow Rate by multiplying the Total Number of Perfs. by the Perforatron Discharge. <br /> 63 Perfs X 0.74 GPM per Perforation = 47 GPM <br /> 16. Vo(ume of Liquid Per Foot of Distribution Piping (Tab(e 1!): 0.170 Gallons/ft <br /> 17. Vo(ume of Distribution Piping = <br /> _ <br /> ' Table 11 � <br /> _ [Number of Perforated Laterals X Length of Lotera(s X (Volume of ' volume of�iquid in ' <br /> Liquid Per Foot of Distribution Piping] Pipe ; <br /> Pipe Liquid i <br /> � X 61 ft X 0.170 gal/ft = 31.1 Galtons � Diameter Per Foot <br /> ! (inches) (Gallons) <br /> 18. Minimum Delivered Volume= Volume of Distribution Piping X 4 1 O.o45 <br /> 1.25 0.078 <br /> 31.1 gals X 4 = 124.4 Gallons 1.5 0.110 <br /> I 2 0.170 � <br /> mani o pipe` , 3 O.380 i <br /> i 4 0.661 ! <br /> � <br /> I__ <br /> � - Oeanouu "� � <br /> pipe from pump <br /> � Manifold pipe. <br /> �2df1 OUiS <br /> ♦ <br /> } ,� <br /> � <br /> alternate lotation �- <br /> 0{ i e from Um �'qiternate location <br /> of pipe from pump <br /> Pi e(rom um <br /> Comments/Special Design Considerations: <br />