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, � <br /> � � � _ OSTP Pressure Distr�bution �; � :. <br /> . :` UNIVERSITY ;,�{ .. ,.`��.4 .�,, <br /> Minnesota Potfution Desi�n Worksheet OF MINNESOTA '' x' 'ti-'�''��' <br /> Controt Agenc <br /> 12. Calculate the Square Feet per Perforation. Recommended vrrlue is 4-11 ft2 per perforation. <br /> Does not cppl 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 =8ed Area divided by the Totnl Number of Perforations. <br /> 630 ft� - 63 perforations c 10.0 ftZ/perforations <br /> 13. Setett Minimum Avervge Head: 1.0 ft <br /> 14. Setect Perforat�on Discharge (GPM) based on Table: 0.56 GPM per Perforation <br /> ��. Determine required Flow Rate by multiplying the Totol Number of Perfs. by the Perforarion Uischarge_ <br /> 63 Perfs X 0.56 GPM per Perforation= �� GPM <br /> 16. Votume nf Liquid Per Foot of Distributlon Pipfng(Tnb(e I!): 0.170 Galtoris/ft <br /> �7, Votume of Distribution Piping = Tabie 11 <br /> _[Number of Perforaterl Laterats X Length of Laterals X (Votume of votume of Liquid in <br /> Liquid Per Foot of Distribution Piping] �'� <br /> pipe Gqu�a <br /> � X 61 ft X 0.170 gal/ft = 31.1 Gattons Diameter Per Foot <br /> (inches) (Galbns) <br /> 18. Minimum Delivered Volume=Votume of Distribution Piping X 4 � o.oa5 <br /> 1_25 0.078 <br /> 31.1 gaLs X 4 = 124.4 Galtons 1.5 0.1 t0 <br /> 2 0.170 <br /> �� w�� 3 0.3� <br /> i 4 0.661 <br /> rr _ ____._ <br /> i p���mP , -C�eanouu `"— — <br /> . <br /> ,'� <br /> i Manitold pipe. <br /> i � <br /> af10UIS ♦ r� � <br /> � �• � � <br /> • ---- <br /> aiternate laation ' <br /> of ' from `n�renwK mw,i� <br /> of pipe 6nm{wmp <br /> P fmm <br /> Comments/Speciat Design Considerations: <br />