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_ OSTp Pressure Distribution �,� t <br /> �� UNIVERSITY � `�q'"�,� <br /> Minnesota Poilution Design Worksheet OF MINNESOTA '_�,���,��< <br /> Controi A enc v���J <br /> ProjectlD: v 11.09.22 <br /> 1. Setect Number of Perforated Laterais i�system/zone: � _____ <br /> (2 feet is minimum ond 3 feet is maxir►�um spacing) , _ '""''"'�"""""" _ __ _ <br /> �� _. ' �r-Y ' <br /> <. <br /> 19'` . �.. ..-' 12••`5 � 1 1 <br /> 2. Select Perforation Spacing: 3 0 ft ` � � -" <br /> � -� <br /> M�nimum <br /> •/n'pe�(rnnliam spacad 3'ap.in 1'-3"of ror.k �'"lZ' <br /> 3. Select Perforation Diameter Size , 7/32 in _ _ <br /> 6'of rock <br /> 4. Lenqth of Laterals =Media Bed Length�2 Feet. �,��•����^=u;�d.,,.-,�•,.- P��+�•�,������Mp:z•�0 3• <br /> 50 - 2ft = ' 48 ft Perforation can not be ctoser then 1 foot from edge. <br /> 5• Determine the Number of Perforation Spaces. Divide the Length of Lnterols (Line 4)by the Perforation Spacing (Line 2)and <br /> round down to the nearest whole numb�r. <br /> Number of PerforQtion Spoces = �48 ft = �ft = 16 Spaces <br /> 6. Number of Perforotions per Luterat is equat to 1.0 plus the Number of Perforation Spoces (Line 5). <br /> Perforotions Per Lateral = 16 Spaces + 1 = 17 perfs. Per Lateral <br /> Check toble below to verify the number of perforotions per(uteral guorantees less than a f0%dixharge voriation. The vatue is <br /> doub(e if the a center nwnifo(d is used. ' <br /> Manimum N�of Perfaatia�s Per lateral to Gu�ar�tee a�!Q!6 Discharge Yariation <br /> !�Irx P orat�ons Ti321nch Perforatiorn <br /> Peiforat�n Spacing(Feet) �Pe Di� er Ilnches) Pe�foration Spxi►�g Pipe Diameter�lruhesl <br /> t tl4 1t:� 1 3 (Feet� f 11� tY: 2 3 <br /> 7 10 f3 i8 3Q 60 Z ft 16 2f 34 68 <br /> 7� 8 12 i6 28 54 23h 10 14 20 31 64 <br /> � 8 12 #6 25 52 3 9 !4 19 30 6{► <br /> 3!16 trxh Rerf�adais' tt8lncfi Perforatioru <br /> Perfarateon Spacing(Feet) �Pe Diarheter(Irxhes) Perforatian Spacing Pipe Diart►eter(Inches) <br /> t 1Y+ 1v: 1 3 (F�) 1 11� 1ti� 2 3 <br /> 2 12 18 26 +4b 87 2 21 33 44 74 149 <br /> 1H 12 17 24 44 64 2Yt 20 30 4t 69 135 <br /> 3 !2 16 T2 3T 75 3 2Q 19 3$ b4 f28 <br /> �• Total Number of Perforations equals the Number of Perforations per Lotero! (Line 6)multiplied by the Number of <br /> Perforated Latera(s (Line 1). <br /> 17 Perf. Per Lateral X ��Number of Perf. Laterals = 51 Total Number of Perf. <br /> 8. Calculate the Square Feet per Perforatiorn Recommended volue is 4-f0 ft Z per perforadon. "K'°�"°^D1�+��6�� <br /> Does not app(y to At-Grades � '"�ra•"°^D1�°� <br /> neaa��n <br /> ��� '/u '�iz '. <br /> Bed A�ea = Bed Width(ft)X Bed Length�ft) �.o- o.�a o.�� o.ss a�s <br /> 1.5 0.22 O.S7 O.i9 0.9 <br /> 10 ft X 50 ft = 500 ft2 zo� o.:s o.ss o.ao ,.w <br /> 2.5 0.29 0.65 O.t9 1.17 <br /> 3.0 0.32 0.T2 � 0.98 /.2! <br /> Square Foot per Perforation =Bed Area d vided by the Tota!Number of Perforotions (Line 7). ••a o.3� o.� ,.,� ,.., <br /> S.�` O.It 0.93 1.?b /.6S <br /> 500 1 lZ T J 1 rforations � �{�� D+re��i^Q vrtch 3/16lnth co 1I1 i�Ch <br /> Pe 9•8 ft2/perforations �ra.�wM <br /> Dwellfrqs with t/8 4ith pMoratbre <br /> ca I/eet Ocher estaabhmenn and M575 wi[A 3/f 6 <br /> 9. Select Minimum Averoge Head: 1 O �L {nch w 1/4 i�h pertora[brs <br /> S��� Ocher escablhMnents antl MSTS with 1/8 inch <br /> pMoratfons <br /> 10. Select Perforotion Dischorge (GPM)basecj�n Table III: 0.56 GPM per Perforation <br /> ��• Determine required Flow Rate by multiptyqng the Total Nu�nber oj Perforntions (line 7)by the Perforotion Discharge (Line 10). <br />