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PL��EL-ECITON PROCfiDURE <br /> A. Determine pump capadty: <br /> Gravity Diatribution <br /> 1. Miaimum suggested is 20 gpm <br /> 2 Maxia►ua1 Suggested is 45 g'pm Peztozstloc►Dis in GPM <br /> Head Perfoation diaauter ' <br /> Pr�ssure Distibution f� �'� <br /> 3. a. Select number of pezforated laterals,3._ � a2 i a <br /> b. Select perforation spacing= � fee� �.oa o.sb' o.7a <br /> c. Subtract 2 fG from the rock layer length 2ob 0.80 1.0�a <br /> ��` -2ft,= � o _fce� ' <br /> ���"�'!�°' a Use lA foot dn hoata. <br /> d. Deteraune the nualber of spaces between perforations. 8k <br /> � � P � b Use 20 feet(or asything eLse. <br /> �n .5 8C121 a '�' �•'�'��� 2� spaces <br /> e. � spaces+1 a�1_P�rationa/lateral <br /> f. Multiply perforations per lateral by number of la�erals to e� ��o�. <br /> get total nuaiber of perforations. � x � _�p <br /> g. � x�_ `�BPm. <br /> SELEC'I'ED PUMP CAPACITY, �� gpm <br /> B.Dete:mine head nquiremenb: <br /> 1, Elevation difference between Quatp arid point of discharge. <br /> ,_Z_feet ����n� <br /> 2, If pumping to a pressure dis�utior►system,five feet Eor pressure <br /> required at mutifold if gravity system,zero. � ��'-' <br /> _�feet ���'�' <br /> 3. Friction loss <br /> a. Enter friction loss table with gpm and pipe diameter. e,.r.�an.�. <br /> Read Eziction loss in feet per 100 feet from table(F-14). a�' „_,,,, _, , <br /> F.L._ -�.S ft/100 ft of pipe - - ` <br /> b. Detesmiile total pipe length hom pump to dischuge <br /> ..................................... <br /> point, Estimate by adding 25 pezcent to pipe length for fitting <br /> loss,or use a fittir►g loss chart(F-15_�eet). <br /> Equivalent pipe length-1.25 times pipe length� �_ <br /> =x 1.25 a-��° f�t Friction toss in P1asHc Pipe <br /> c. Calculate total friction loss by multiply�r►g "'- ' Nominal <br /> friction loss in R/100 ft by equivalent pipe length. Pi��, <br /> Total friction loss= /°�?x_� �?*100� � feet Flow Rute 1S� 2� g� <br /> 4. Total head required is the sum of elevation difference, �� <br /> special head requirements,ancl total hiction loss. <br /> 20 247 0.73 0.11 <br /> �+ �.+.�_ ?5 3.73 1.11 0.16 <br /> • (1) (2) (3c) 30 .5.?3 1.55 0.23 <br /> 35 b.96 206 0.30 <br /> 40 8.91 264 0.39 <br /> ?OTAL HEAD ._1.�feet 45 11.07 3.28 0.48 <br /> 50 13.46 3.99 0.58 <br /> 55 4.76 0.70 <br /> C, pump selection 60 5.60 0.82 <br /> 65 6.48 0.95 <br /> 70 7.44 1.09 <br /> 1. A pump�mu.st be.selected to deliver at least � <br /> �gpm (Step A).with at least �feet of total head (Step B). <br /> � <br />