Laserfiche WebLink
� _ OSTP Pressure Distribution �� <br /> v UNIVERSITY ,�, �`� ��, <br /> MinnesoW Poilutian Design Worksheet OF MINNESOTA �� � �`� <br /> Controt A enc ��`�- <br /> Project ID: v 11.�Z2 <br /> 1. Select Number of Perforated Laterafs in system/zone: �� ______ <br /> Y�wL�N ai.iass 4v� <br /> (2 feet is minfmum and 3 feet is nwximum spac�ng) ,.• : -:= . T Y -: ` <br /> 'r � � � <br /> 2. Select Perforation Spadng: 3.0 ft ,_"-�. .� . „'s"���"�•, ._ � - <br /> � <br /> v,-a�o.�ro�s:�a.�a:•�n t�`2�o�fTack , �,•^�2- <br /> 3. Select Perforatfon Diometer Size 1/4 in _ _ <br /> . 6'of rock � . <br /> 4. Length of Luterols =Media Bed Length-2 Feet. P�,'°����°^���^+�:•f�-ta',.- �^«�ta^s��,�,:Z•�0 3• <br /> 38 - 2ft = 36 ft Perforation con not be closer then 1 foot from edge. <br /> 5• Determine the Number of Perforation Spoces. Divide the Lenqth of Latero(s (Line 4)by the Perforohon Spncing (Lir�2)and <br /> round down to the nearest whole number. <br /> Number of Perforation Spoces = 36 ft .- ��ft = 12 Spaces <br /> 6. Number of Perforations per l.atero! is equal to 1.0 ptus the Number of Perforet7on Spaces (L9ne 5). <br /> Perforations Per Laterat = 12 Spaces + 1 = 13 Perfs. Per Lateral <br /> Check table below to verify the number of perforations per lateral guarontees less thnn u f0%discharge vnriution. The volue is <br /> doubte if the a center manffold is used. <br /> Max�r►Nunber of PerFaations Per Lateral ta Guara�ee�4t1�6 Diul�arge Yatirtio� <br /> '.I P orahons 7f32 fnch Ferforations <br /> Perforati�n Spas�g(Fee#} �Pe t)iarneter{Mches) Fe�faration Spatin8 Pipe(�ameter(tnchesi <br /> 1 tY� 1� 2 3 (Feetl f 116 tv: 2 3 <br /> 7 10 f3 1$ 3Ef b0 2 f 1 16 2t 3+1 66 <br /> 2� 8 12 16 28 54 21� 10 14 20 32 64 <br /> 3 8 i2 i6 25 52 3 9 !4 !9 30 QO <br /> 3J161nch Perfora#ioru LE81r�ch Perforatir�s <br /> �ipe oiametef ttnc►�es? Pe�rfo�at+on spa�ci� Ptipe aameter tinct�es! <br /> Petforatio�Spacin8lFeet) ! 1S� 1�2 2 3 fFeet} 1 ttt 1� 2 � <br /> 2 12 18 2b 96 8T 2 21 33 #4 7A t49 <br /> Zvt 12 17 24 4U 80 2Yt 20 30 41 b9 135 <br /> 3 f2 16 22 37 75 3 20 24 38 64 128 <br /> �• Total Number of PerJoratior►s equals the Number of Perforotions per Laterol (Line 6)multiplied by the Number of <br /> Perforated Laternls (Line 1). <br /> 13 Perf. Per Lateral X �Number of Perf. Laterals = 39 Totat Number of Perf. <br /> 8. Cakulate the Square Feet per Perforation. Recommended volue is 4-10 ft Z per perforat�on. °M°'�"°"D1��161M� <br /> Does not app/y to At-Grades „�,,r�� "°``°""°"D1rne0°` <br /> '% '�,. '�,. '. <br /> Bed Area = Bed Width(ft)X Bed Length(ft) <br /> �.0 �..o.ta o.4� ���o.sc o.ss . <br /> 1.S 0.22 0.31 O.N 0.9 <br /> 10 ft X 38 ft = 380 ft2 Zw '.� '.s9 0.'° ,.'. <br /> 2.5 0.29 0.65 O.M 1.f7 <br /> � 7.0 OJ2 OJ2 0.98 1.2C <br /> Square Foot per Perforation =Bed Area divided by the Totat Number of Perforations (Line 7). ..o o.» o.p ,.,� ,..� <br /> s. o.,, o.va ,.0 ,.ss <br /> OwNli�s wIM 3/16 inCA m t/4 Snch <br /> 380 RZ = 39 perforations c 9.7 ft2/perforations '`°°` �+��� <br /> Dwell{�with t 19 inch peRorotbns <br /> q I fcet O[Iro'estadishments antl M5T5 wfch 3/f6 <br /> 9. Select Minimum Average Head: 1.0 1 l {rch to f/4 Sn[�perforatb�n <br /> s tece anx escaaetine�cs ana Msrs wun i re tncn <br /> 10. Select PerforoNon Dischor ���� <br /> qe (GPMj based on Table III: 0.74 GPM per Perforation <br /> 11• Deternrine required Flow Rate by multiplying the Tota!Number of Perforations (Line 7)by the Perforation Dischurge (Line 10). <br />