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v 07.14.15 <br />1. Media Bed Width:ft <br />2. Minimum Number of Laterals in system/zone = Rounded up number of [(Media Bed Width - 4) ÷ 3] + 1. <br />(laterals <br />3. Designer Selected Number of Laterals :laterals <br />Cannot be less than line 2 (accept in at-grades) <br />4. Select Perforation Spacing :ft <br />5. Select Perforation Diameter Size:in 0.25 <br />6.Length of Laterals = Media Bed Length - 2 Feet. <br />-2ft= ft Perforation can not be closer then 1 foot from edge. <br />7. <br />Number of Perforation Spaces = ft ÷ ft = Spaces <br />8. <br />Spaces + 1 =Perfs. Per Lateral <br />9. <br />Perf. Per Lat. X Number of Perf. Lat. = Total Number of Perf. <br />10. Select Type of Manifold Connection (End or Center): <br />11.Select Lateral Diameter (See Table):in <br />Does not apply to at-grades <br />Perforations Per Lateral = <br />Project ID: <br />3 <br />1/4 <br />10 <br />3- 4 ) + 1 = <br />393 <br />13 <br />10 <br />12336 <br />Number of Perforations per Lateral is equal to 1.0 plus the Number of Perforation Spaces . Check table below <br />to verify the number of perforations per lateral guarantees less than a 10% discharge variation. The value is <br />double with a center manifold. <br />12 <br />OSTP Pressure Distribution <br />Design Worksheet <br />Determine the Number of Perforation Spaces . Divide the Length of Laterals by the Perforation Spacing and <br />round down to the nearest whole number. <br />38 36 <br />3.0 <br />13 <br />Total Number of Perforations equals the Number of Perforations per Lateral multiplied by the Number of <br />Perforated Laterals. <br />1.50 <br />End Center