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PLrr�rp SF�F[TiON PROCfiDURE <br /> A. Determine pump capadtq: <br /> Gravity Distribution <br /> 1. Miaimua�suggested is 20 gpm <br /> 2 Maximum suggested is 4S gpm Perforadoa Di,chuga i�c�M <br /> Head Perforadon diaa►eter <br /> pressure Disdbution f`et tn`1'a <br /> 3.a. Select number of perforated laterals=_ 7 32 i a <br /> b. Select perfontion spacing=�_fee� t.oa o.56' o.7a <br /> c. Subtract 2 ft.hom the rock layer length. 2ob 0.0 1.0�4 <br /> � -2 f�_ -1� fee� ' <br /> ��ra�M a Use 1.0 foot�n homa. <br /> d. Deteratiine the number of spaces betw�en perforations. b v�2.o feet for any�,in8 etse. <br /> j.eI1�1 pP�.SP8C�I1g= � �'�'���a�-�spaces <br /> e. 1.�spaces+1= '1.-Perf°rationa/lateral <br /> f. Ivfultlply perforatlons per lateral by number of laterals to r i,���o�� <br /> get total number of perforations. � x �_�L perfomdons. <br /> g. � x�_�BPm. <br /> SELEC'I'ED PUMP CAPACITY , 3 � SP� <br /> B.Determine head requiremenb: <br /> 1, Elevation difference between pualp and point of discharge. <br /> �_feet <br /> sou ti..m+.�,c�r+� <br /> 2, If pumping to a pressure distribution system,five feet for pressure �� <br /> required at mazufold if gravity system,zero. <br /> _�� feet �°��'�'� <br /> 3. Friction loss <br /> a. Enter friction loss table with gpm and pipe diameter. a.�•�+� <br /> Read friction loss in feet per l00 feet from table(F-14). a�' .,,._, <br /> F,L.= a. ft/100 ft of pipe ' • . <br /> .....................................� � <br /> b. Deteralisie total pipe length from pump to discharge <br /> point Estimate by adding 25 percent to pipe length for fitting <br /> loss,or use a ficting loss chart(F-15_____�eet). <br /> Equivalent pipe ler►gth-1.25 times�ip�e length= • ' <br /> �x 1.25 a.�-5�-feet Friction Loss in PlastiC Pi e <br /> c. CalcuLate total friction loss by multiplying ' Nominal <br /> friction loss in ft/100 ft by equivalent pipe length. pipe dia. <br /> Total frictton loss= �-x ��--*100,=,�_feet Flow Rate <br /> 4. Total head required is the sua►of elevation difference, �� ls" 2� 3� <br /> special head requirements,and total friction loss. <br /> 20 247 0.73 0.11 <br /> �_+_�_�. / ?S 3.73 1.11 0.16 <br /> � (1) (Z) (3c) 30 .5.23 1S5 0.23 <br /> 35 6.96 206 0.30 <br /> 40 8.91 `264 0.39 <br /> TOTAL HEAD ��_feet 45 11.07 3.28 0.48 <br /> 50 13.46 3.99 OS8 <br /> 55 4.76 0.70 <br /> C. Pump selection bo s.bo o.s2 <br /> �,5 6.48 0.95 <br /> 70 7.44 1.09 <br /> 1. A puump rnust be selected to deliver at least � <br /> �gpm (Step A)with at least `�.�.feet of total hea.�i (Step B). <br /> � <br />