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OSTP Pressure Distribution <br /> MinnesotaPoliutlon �)N1VE�IZSITY � ^ <br /> Design Worksheet oF :�1rN��soT,� . v�,�`, <br /> Contrai Agenty <br /> ProjectlD: v 12.d8.06 <br /> 1. Media Bed Width: �ft <br /> 2. Minimum Number of Laterals in system/zone=[(Media Bed Width(Line1)-4):3]+1 round up to the neareast whole number+ 1. <br /> (�5� -q)+ } - �Jtaterats <br /> ----� <br /> 3. Designer 5elected Number of Latero(s: �laterals <br /> Cannot be tess thQn line 2 laccent in at-Qrodesl <br /> 4. Select Perforation Spacing: 2.5 ft . • . • . . . �/�� <br /> . � .:.. <br /> ..,,,.._.. . , \`, .. <br /> � �_ ��. � � . <br /> 5. Select Per oration Diameter Size: 7/32 i� " - _ <br /> f �..,..�.. .,,,,,.� � � �,...� !_._ 1 ;, <br /> __ -- - - � <br /> — .__ - _ _, - <br /> 6. �eng[h of Laterals =Media Bed Length -2 Feet. � � � �v <br /> _ --- __._— --- ------_._. <br /> � ,,,, , ,,,,; , ,,, , , ,,,,.. ..,�„ <br /> 125 - Zft = 123 ft Perforation can not be ctoser then i foot from edge. <br /> � Determine the IJumber of Perforatron Spaces. Divide the Length of Laterols (Line 6)by the Perforation SpacinS (Line 4)and <br /> round down to the nearest whole number. <br /> Number of Perforotion Spoces = 123 ft . 2.5 ft - 49 Spaces <br /> Number of Perforotions per Lateral is equal to 1.0 ptus the Number of Perforation Spaces (Line 7�. Check tabte below to verify the <br /> 8' number of perforations per tateral guarantees less than a 10%discharge variation. The value is doubte with a center manifold. <br /> Perforations Per Lateral = 49 Spaces + i = 50 perfs. Per Lateral <br /> � Maxim�►►N�r af Per�orati�Ptr literal to Cwuantee�1 Q�b f)ischarge Yariation <br /> ,Inch PerF+xat�n: 1�3I Inch Ferforations <br /> Pip�Diamete� (ImhFs! f�e�torati,�n S�cing Pipe Diameter flnches� <br /> P�rforat�or��pafing(Fget# <br /> � t �� 3s�4 2 3 ifee;l i t�, t�: 2 a <br /> Z Ifl 13 18 30 6(1 2 14 1b 2 t 34 68 <br /> � �� 8 12 16 28 5�4 ��'k tU �4 I� 32 � 6# <br /> 3 8 )2 ib 25 52 3 9 14 14 30 60 <br /> 3 '16 Ir�ch Ferioratians 4'�inc�O Peri�ratin�s <br /> � Pipe tlierrwte�(lnch�s'! ���torabon Spacin� Pipe[tiar�eter iinchos� <br /> ! PerforatioFl Spatit�g 1�2�) <br /> t ��v s�: 2 3 iFee:1 t Ivi ?t� 1 3 <br /> 2 12 i$ I6 4b B7 2 2f 33 M 74 f49 <br /> � �� 12 17 24 4t1 �a 2%° �G 3p 4t b� t3� <br /> 3 1� !b 22 31 75 3 2p 19 38 b4 f18 <br /> 9• Total Number of Perforvtions equals the Number of Perforottons per Laterol {Line 8)muttiplied by the Number of <br /> Perforated Latera(s (Line 3}. <br /> 50 Perf. Per Lateral X ��Number of Perf. Laterals = 50 Total Number of Perf. <br /> 1Q. Select Type of Monifold Connection (End or Center): ❑ End ❑ Center <br /> 11. Seled Latera(Diameter(See Tabfe): 2.00 in �� <br /> - c � <br /> , <br />