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OSTP Pressure Distribution <br /> Design Worksheet oF M NNEITY � ,. <br /> Minnesota Pollution = <br /> Control Agency SOTA �-``_`��' <br /> 12. Calculate the Square Feet per Perforotion. Recommended value is 4-19 ftz per perforotion. <br /> Does not apply to At-Grades <br /> a. 8ed Areo = Bed Width (ft) X Bed Length (ft) <br /> 10 ft X 41 ft = 410 ftZ <br /> b. Squore Foot per Perforation = Bed Area divided by the Tota!Number of Perforations. <br /> 410 ftz .- 42 perforations = 9.8 ft2/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 RQte by multiplying the Tota( Number of Perfs. by the Perforation Discharge. <br /> 42 Perfs X 0.74 GPM per Perforation = 31 GPM <br /> 16. Volume of Liquid Per Foot of Distribution Piping (Table 11): 0.170 Gatlons/ft <br /> 17, Volume of Distribution Piping = , _ __ <br /> Table 11 <br /> _ [Number of Perforated Laterals X Length of Laterols X (Volume of ' Volume of Liquid in <br /> Liquid Per Foot of Distribution Piping] Pipe <br /> Pipe Liquid <br /> �] X 39 ft X 0.170 gaVft = 19.9 Galtons �: Diameter Per Foot ! <br /> (inches) (Gallons) <br /> 18. Minimum Delivered Volume =Volume of Distribution Piping X 4 1 0.045 ; <br /> 1.25 0.078 <br /> 19.9 �als X 4 = 79.6 Gatlons 1.5 0.��o <br /> ' 2 0.170 ' <br /> mamo pipe� 3 0.380 <br /> � 4 0.661 i <br /> � '_-- __� <br /> � - Clcanou[s ' <br /> pipe from pump - <br /> lean ouu Mani(dd pipe� <br /> ♦ <br /> �� �• ; <br /> alternaYe laation '' <br /> of i e from um �qlternate location <br /> of pipc from pump <br /> Pi e from um <br /> Comments/Special Design Considerations: <br />