Laserfiche WebLink
OSTP Pressure Distribution <br /> Minnesota Pollution Design Worksheet UNIVERSITY <br /> Control Agency OF MINNESOTA <br /> 12. Calculate the Square Feet per Perforation. Recommended value is 4-11 ft per perforation. <br /> Does not apply to At-Grades <br /> a. Bed Area = Bed Width (ft) X Bed Length (ft) <br /> 10 Ift X 50 ft = 500 ft2 <br /> b. Square Foot per Perforation = Bed Area divided by the Total Number of Perforations. <br /> 500 Ift21 51 perforations = 9.8 ft /perforations <br /> 13. Select Minimum Average Head: 1.0 ft <br /> 14. Select Perforation Discharge (GPM) based on Table: 0.74 GPM per Perforation <br /> 15. Determine required Flow Rate by multiplying the Total Number of Perfs. by the Perforation Discharge. <br /> 51 Perfs X 0.74 GPM per Perforation = 38 GPM <br /> 16. Volume of Liquid Per Foot of Distribution Piping (Table It): 0.170 Galion/ft <br /> 17. Volume of Distribution Piping = -- <br /> Table 11 <br /> _ [Number of Perforated Laterals X Length of Laterals X (Volume of ! Volume of Liquid in <br /> Liquid Per Foot of Distribution Piping] Pipe <br /> Pipe Liquid <br /> 3 X ft X <br /> gat/ft _ Gallons � Diameter Per Foot <br /> 48 0.170 24.5 <br /> (inches) (Gallons) <br /> 18. Minimum Delivered Volume = Volume of Distribution Piping X 4 1 0.045 <br /> 1.25 0.078 <br /> 24.5 gals X 4 = 97.9 Gallons 1.5 0.110- <br /> 2 0.170 <br /> manifoW pipe 3 0.380 <br /> 4 0.661 <br /> pipe from pump " Clearwuts <br /> Manifold pipe. <br /> dean OUTS ` <br /> aftemate location - --' <br /> of pipe from pumd Alternate location <br /> of pipe from P—P <br /> Ppe horn pump <br /> Comments/Special Design Considerations: <br />