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OSTP Pressure Distribution <br /> ITY <br /> n <br /> Minn.sotaPioNu Ion Desi Worksheet UNIVE RS <br /> �� � OF MINNESOTA <br /> Project ID: v 03.19.15 <br /> 1. Media Bed Width: 1 10 Ift <br /> 2. Minimum Number of Laterals in system/zone- Rounded up number of [(Media Bed Width -4) + 3] + I. <br /> ( 10 <br /> - 4 ) + 1 = L.�laterals Does not apply to at-grades <br /> 3. Designer Selected Number of Laterals: laterals <br /> Cannot <br /> Cannot be less than line 2 (accept in at-Qrades) <br /> 4. Select Perforation Spacing 3.0 Ift <br /> rer r wa <br /> 5. Select Perforation Diameter Size: 1/4 in I • a�• <br /> R-1e.1vwlfara•a l' <br /> 6. Length of Laterals -Media Bed Length - 2 Feet. <br /> 50 - 2ft ft Perforation can not be closer then 1 foot from edge. <br /> 7 Determine the Number of Perforation Spaces. Divide the Length of Laterals by the Perforation Spacing <br /> and round down to the nearest whole number. <br /> Number of Perforation Spaces 48 ft + ft = 16 Spaces <br /> Number of Perforations per Lateral is equal to 1.0 plus the Number of Perforation Spaces. Check table <br /> 8. below to verify the number of perforations per lateral guarantees less than a 10%discharge variation. The <br /> value is double with a center manifold. <br /> Perforations Per Lateral = 16 Spaces + 1 - 17 Perfs. Per Lateral <br /> lliiriirir�lM�sl�rl�Iwilr�wniw�lli Mr1rY� <br /> 1, 7132 <br /> 1(Fi r"Nowur kim) Pa IN *Kkj Durr(ice <br /> 1 11l f14 2 3 IFMt) t 11t iN 2 3 <br /> 2 M q q r ! 11 N 21 M Y <br /> 211 8 12 1fi a 54 Z% to 14 20 322 M <br /> : 1 I U N 31 fis 3 > w 19 w M <br /> 3/14"Faly i/8tact+Pallwatic, <br /> 1 tw 11t 2 3 1 lit in 2 3 <br /> 2 t2 M 31i A : 21 33 44 74 10 <br /> 21'1 12 17 24 40 80 214 20 30 41 0 135 <br /> 3 t2 M n 37 a 3 38 it i 3S M in <br /> 9. Total Number of Perforations equals the Number of Perforations per Lateral multiplied by the Number of <br /> Perforated Laterals. <br /> 17 Perf. Per Lat. X Number of Perf. Lat. = 51 Total Number of Perf. <br /> 10. Select Type of Manifold Connection (End or Center): Q end ❑ Center <br /> 11. Select Lateral Diameter(See Table): 2.00 in <br />