Laserfiche WebLink
� OSTP Pressure Distribution <br /> UNIVERSITY �`'� <br /> MinnesotaPoftution peS1�n w0fk$�QQt OF IVIINNESOTA ����� �� <br /> CoMrol Age�ty - <br /> ,.."Z\�- <br /> 1. Setect Number of Perforoted Latervls in rystem/zone: (�3 ` � <br /> 1_� ��� � � <br /> (1 feet is minimum and 3 feet fs nwximum spacing) '�� 3'� r m� <br /> 2. Setect Perfomdon Spodng: 3.0 ft � - 'Z'- - <br /> �� 9•�� <br /> 3. Select Perforation Diameter Size �/4 ;� <br /> rerf«auon six�g v:m v; <br /> hr(aation ' 2'm 3' <br /> 4. Length of Loterats =A�dia Bed Length-2 Feet. Per/oration can rrot be closer then 1 foot from edge. <br /> 3$ - 2tt = 36 ft - <br /> 5• Determir�the Number of Perforation Spoces. Divide the Length of Loterois (Line 4)by the Perforotion Spodng (Line 2)and <br /> round down to the nearest whole number. <br /> Number of Perforation Spaces = 36 ft = C�ft = 12 Spaces <br /> 6. Number of Perforotfons per L.ateral is equal to 1.0 plus the Number of Perforvtfon Spaces (Line 5). <br /> Perforallor�Per t.oterot = 12 Spaces + � = 13 perfs. Per Lateral <br /> Check Table!to verlfy the number of perforations per tvteinl guarantees less thaa a f0%dixhorge variation. The value fs doub(e if <br /> the a center rrbMfotd is used. <br /> �• Total Number oj PerforuNons equals the Number of Perforatlons per tAterol (Line 6)muttiplied by the Number of <br /> Perforated Laternis (Line 1). <br /> 13 Perf. Per Lateral X C�Number of Perf. Laterats = 39 Total Number of Perf. <br /> 8. Calcutate the Squo�e Feet per Perjoration. Recommer►ded value fs 4-10 ftZ per pe�forotion. - <br /> Does not app(y to At-Grodes ""1aatlai°�� <br /> v.ra.nm o�.� <br /> Bed Areo = Bed Width(ft)X Bed Lens�th(ft) "�d�� .,� ,,�� ,,� ��. <br /> e.o` ona o.�t ass a�a <br /> 1� ft X $$ ft = 380 �z +.a o.0 o.s� ass o.s <br /> 2.0� Q26 � 0.�9� 0.b 1.W <br /> iS O.I9 0.65 0.89 1.17 <br /> Square Foot per Perforotion =ged,4reo divided by the Toto!Number of Perforations (Line 7). �o a�: o_�: as. ,.,, <br /> �.O 417 O_�] t.17 1.47 <br /> S- 0.11 0.9) 1.26 yfS <br /> 380 ftZ = 39 perforations = 9.7 ft2/periorations ,�,,, ,�•���+,6+Mh o��� <br /> � <br /> 1 ia ma�vMo��s on dwdlLgs ra tor <br /> 9- Select Minimum Averoge Heod: 1.0 ft z r«� n,K a„n,� <br /> 1/4 kKh aM 3176 YiM pe/oratlons on/d57S <br /> s r.K �ia n+a vM«a�on�ars <br /> 10. Select Pe�oration Discharge (GPM)based on Table Ilt: 0.74 GPM per Perforation <br /> ��• Determine required Flow Rate by muttiptying the Totol Number of Perforations (Lir�7)by the Rerforatfon Dfuharge (Line 10). <br /> 39 Perforations X 0.74 GPM per Perforation = 29 GPM <br /> 12. Setect Type of Monffold Connection (End or Center): �� �� <br />