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OSTP Pressure Distribution <br /> Minnesota Pollution Design Worksheet UNIVERSITY <br /> Control A enc OF MINNESOTA '�,,�- <br /> 12. Calculate the Squore Feet per Perforcrtion. Recommended volue is 4-11 ftZ per perforotion. <br /> Does not appfy to At-Grades <br /> a. Bed A�-e� = Bed Width (ft) X Bed �ength (ft} <br /> 10 f ft X ! 63 ft = 630 ftZ <br /> b. 5quare Foo�per r�erforation = Bed Area divided by the Totol Number of Perforations. <br /> 630 ft2 .- 63 perforations = 10.0 ftZ/perforations <br /> i � <br /> 13. Sel2ct Mrnimum Average Head: 1.0 ft <br /> 14. Select Perforation Dischorge (GPM) based on Table: 0.56 GPM per Perforation <br /> �5• Deterrn�ne required Flow Rate by multiplying the Tota!Number of Perfs. by the Perforation Discharge. <br /> 63 Perfs X 0.56 GPM per Perforation = 36 GPM <br /> 16. Vo(ume of Liquid Per Foot of Distribution Pipinq (Toble ll): 0.170 Gallons/ft <br /> 17. Volume of Distribution Piping = <br /> Table II <br /> _ [Number of Per-forated Laterafs X Length of Lcrterals X (Volume of Volume of Liquid in <br /> Liquid Per �oot of Distribution Piping] piPe <br /> Pipe Liquid <br /> 3 j X 61 ft X 0.170 gal/ft = 31.1 Gallons �ameter Per Foot <br /> (inches) (Galions) <br /> 18. Minir,,um Deiivered Votume = Volume of Distribution Piping X 4 1 0.045 <br /> 1.25 0.078 <br /> � 3 i.1 �gals X 4 = 124.4 Gallons 1.5 0.110 <br /> 2 0.170 <br /> mani ol pipe� 3 0.380 i <br /> r <br /> � 4 0.661 � <br /> � _-Cleanouts '� ^ �—' <br /> pipe from pump —'� <br /> ,, <br /> � <br /> lean outs ; Manifold pipe�, <br /> ♦ ' <br /> , <br /> � �� , � <br /> � � --- <br /> alternate location -- <br /> of i e trom um ` �Alumate bcation <br /> of pipe from pump <br /> Pi e irom m <br /> Comments/Specia! Jesi�n Considerations: <br />