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� „ �•, <br /> � OSTP Pressure Distribution <br /> �: <br /> Minnesota Pollution Desi n Worksheet UNIVERSITY <br /> Control A en � OF MINNESOTA � � <br /> Project ID: v 07.14.15 <br /> 1. Media Bed Width: 10 ft <br /> 2. Minimum Number of Laterats in system/zone = Rounded up number of [(Media Bed Width - 4) = 3] + 1. <br /> ( 10 - 4 ) + � = C3�laterals Does not apply to at-grades <br /> 3. Designer Selected Number of laterals: ��laterals <br /> Cannot be less than line 2 (accept in at-Qrades) ----- <br /> ..V..,,�_.:.:�„ <br /> 4. Select Perforation Spacing 3.0 ft ;_`.��. .. - . ::2 �>"�.��'��� .. �-�_ . <br /> ,,-�.�.,�„����.�.� ,�.� •�• ,—:. <br /> 5. Select Perforation Diameter Size: 7/32 in .-o„� <br /> .�,�a�,.��„� :�,:W•,: �,a.�.. ����� <br /> 6. Length of Laterals = Media Bed Length - 2 Feet. <br /> 63 - 2ft = 61 ft Perforotion can not be closer then 1 foot from edge. <br /> � 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 61 ft : ��ft = 20 Spaces <br /> Number of Perforotions per Lateral is equal to 1.0 plus the Number of Perforotion 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 = 20 Spaces + 1 = 21 Perfs. Per Lateral <br /> M�i�ll�r of Perfaraaa�s P+et l�r�l tie Gwr�be c46�Orrt�r�ihti�don <br /> /. P a'�bons 7f32 kKh Perforatiax <br /> Pe�for�tio�Spxing(ft�etl �'���1 Prrfontian 5picirq Pipe Di�meEer linches! <br /> 1 1!i tYe 2 3 (Feet1 1 11i 1Ye 2 3 <br /> 2 tc �3 �a ao �0 2 » �s r � �a <br /> � 8 12 S6 2a 54 21� 10 14 24 32 bi <br /> 3 ! 12 16 t5 S2 3 i 1� t� 3@ 5p <br /> 3/16 krcf►P�er6antions i�a t,�n� <br /> Per�ontion Sp�tin�{F�et� �Di�nieter(M�chesl P�fontion Spicin� Pipe Diin�eter(lnches) <br /> f 11i 1Yt 2 3 (Feet1 1 11i 11� 3 3 <br /> 2 f2 'u 26 4i S7 2 21 33 44 7�4 4M <br /> � 12 17 2� �0 30 21'� 20 30 41 69 t3'S <br /> 3 tY 1i 22 37 75 3 �p 2y 33 6�! 4�1 <br /> 9• Total Number of Perforations equals the Number of Perforations per Lateral multiplied by the Number of <br /> Perforated Laterals. <br /> 21 Perf. Per Lat. X �Number of Pert. Lat. = 63 Total Number of Perf. <br /> 10. Select Type of Manifold Connection (End or Center): � end ❑ center <br /> 11. Select Loteral Diameter(See Table): 2.00 in <br />