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OSTP Pressure Distribution - � � � <br /> - • UNIVERSITY > � -�� ` <br /> Minnesota Potlution Des� n Worksheet �-�� � -� <br /> Controt Agency <br /> � OF MINNESOTA �� �'��ti,� <br /> Project ID: . v 06.12.13 <br /> 1. Media Bed Width: �0 ft <br /> 2. Minimum Number of Laterats in system/zone=Rouded up number of[(Media Bed Width-4) :3] + 1. <br /> ( i0 -4)+ 1 = �taterals Does not apply to et-grades <br /> 3. Designer Selected Number of LaterQ(s: ��taterats <br /> Cannot be iess than tine 2 loctepr in at-qrodes) ._. „b__- : - <br /> 4. Select Perforation.�acing: 3.0 ft � �- � � __ _ � <br /> 5. Setect Perforation Diameter Size: 7/32 in ' � . ' ,�md~ � _ <br /> fi"of <br /> w�1't.:{ <br /> 6. Length of Laterais =Media Bed Length- 2 Feet. <br /> 63 - 2ft = 61 ft Perforation cun nor be c(oser ihen i foot from edge. <br /> � Determine the Number of PerforQtion Spaces. Divide the tength of taterols by the Perforation Specing <br /> and round down to the nearest whole number. <br /> Number of Perforation Spaces 51 ft = �_�ft = 20 Spaces <br /> Number of PerforQtions per 1_aterat is equal to 1.0 ptus 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 do�te with a center manifold. <br /> Perforotiorts Per Leteral = 20 Spaces + 1 = 21 Perfs. Per Lateral <br /> Maxim�n Number of Perfara��pn5 Pet Latera!to Guarantfe�10Tb Distcharge Yariation <br /> !,inc Pesiarat�r,�s 7132 f�ch Perforations <br /> Perfarat�o�Spaang(Feeti Pi�Diameter ilnci�es) PerForation Sp�cing Pipe�ameter(lnches) <br /> S 15� tt; � 3 tfeetl t t� i�� � 2 3 <br /> 7 1Q t3 18 30 60 2 it I6 2t 34 d8 <br /> 2�: F R 16 28 5� 2�� 10 1� 24 32 64 <br /> � 8 12 16 25 52 3 9 �4 t4 3Q bd1 <br /> 3'161nch Perforaiians t`8 inch Perforations <br /> Pipe Diameter tisxhes) Perforation Spxirx3 t'ipe EAimeier�Mthes} <br /> Pe�forat�n Sparirt3 fFce[} <br /> 9 �u i�4 2 3 (��e�� � t�4 �ti4 2 ? <br /> 2 f2 18 2d 46 81 2 2t 33 #4 �� i49 <br /> Zi. 12 17 1# AO 80 2!� 2R 3� 41 64 135 <br /> 3 f2 15 22 37 75 3 2Q 29 3� �4 128 <br /> 9• Total Number of Perforotiom equals the Number of Ferfarations per Laterat multiplied by the Number of <br /> Perfornted Latern(s. <br /> 21 Perf. Per Lat. X � 3�Number of Perf. Lat. = 63 Total Number of Perf. <br /> 10. Select Type of Manifoid Connection (End or Center): �' Er►d ❑ Cenoerr <br /> 11. Select Ca[era(Diameter(See Teble): 2.00 in <br />