Laserfiche WebLink
� OSTP Pressure Distribution <br /> Minnesota Poilution • UNIVERSITY �� � �� . <br /> Conirol Agency <br /> Design Worksheet OF MINNESOTA �'� �`-� ���, <br /> Project ID: v 06.12.13 <br /> 1. Media Bed Width: �� ft <br /> 2. Minimum Number of Laterats in system/zone= Rouded up number of[{Media Bed Width -4) = 3] + 1. <br /> ( 10 -4 ) + 1 = �taterats Does not apply to at-grades <br /> 3. Designer Selected Number of Lotera(s: �taterats <br /> Cannot be less than line 2 (accept in at-eradesl <br /> 4. Setect Perforation Spacing: 3.0 ft � � ' ` <br /> -- �'���~ ,—>`- <br /> 5. Select Perforation Diameter Size: 7132 in ' �..� ' <br /> 6. Length of Latera(s =Media Bed Length - 2 Feet. <br /> 63 - 2ft = 61 ft Perforation can not be c(oser rhen 1 foot from edge. <br /> � Determine the Number of Perforation Spaces. Divide the Length of Laterais by the Perforation Spacing <br /> and round down to the nearest whote number. <br /> Number of Perforation Spoces 61 ft : ��ft = 20 Spaces <br /> Number of Perforations per Latero( is equat 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 /> vatue is doubte with a center manifold. <br /> Perforot+ons Per Laterat = 20 Spaces + 1 = 21 Perfs. Per Laterat <br /> Maxim�n Nc�nber o{Fe{faations Per Laterat to Guararotee<1046 Discharge Yariatio� <br /> ':',lnch P aatans 7f32 irxh Perforadons <br /> Pe+foratwn Spac�ng IFeet? Pipe Diameter(lnches) Pe�#oration 5pacing Pipe Oiameier(lnchesl <br /> 1 1t�� is� 2 3 (Feeti i lu 1}: 1 3 <br /> 1 t0 13 18 30 60 2 11 16 21 34 6d <br /> 2;� 8 12 16 18 54 1�. tp 14 20 32 b4 <br /> 3 8 12 16 25 52 3 9 14 14 30 d0 <br /> 3'i6 Inth Perfora#ian 1,'6 trxh Perforatio�s <br /> Pip�Diameter pnchesl Perforati�Spacir�g Pipe D'same#er(inches} <br /> Perforation Spating IFeet) <br /> i t?G iti2 t 3 f�eet) 1 1'� 1�t I 3 <br /> 1 11 18 2b 46 87 1 ?f 33 #4 74 1�9 <br /> Zi� 12 17 14 4Q 80 2� 20 30 41 69 135 <br /> � 12 16 Z2 37 75 3 20 19 38 bd 128 <br /> 9• Total Number of Perforotions equats the Number of Perforations per Lotera( muitiptied by the Number of <br /> Perforcrted Laterals. <br /> 21 Perf. Per Lat. X C�Number of Perf. lat. = 63 Total Number of Perf. <br /> 10. Select Type of Manifold tonnection (End or Center): [�] end ❑ center <br /> 11. Select Loteral Diometer(See TQbte): 2.00 in <br />- _ ___ ___ <br />