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. F-17 <br /> PiJMP SELECT'ION PROCEDURE <br /> EJD PERFORATION OF A PERFORATED LATERAL <br /> Determine pump capacity: w..�.. <br /> Gravity Distribution T.,..,, i�,��� <br /> Minimum suggested is 600 gallons per hour(10 gpm)to stay ahead of �,�:;;.:>�� � . ��-N�..N„�.F,e,k,,,,,,. <br /> water use rabe. r :- w•r a.�.w.. :'�`,�',�.��;...� <br /> Maximum suggested for delivery to a drop box of a home system is 2�/W � Mf�nllen Or11W Mr�mn�aih <br /> ti�w�.., H. <br /> gallons per hour(45 gpm)to prevent build-up of pressure in drop box. ,�. '-N�.e.� �:•�e Eao. <br /> ef RecR Lsf�r <br /> �x:::t.�:..;�::. . . ....: . .. .. . <br /> . Rlfaa11M1�IOC�IN al <br /> Pressure Distibution ���� '""'"«"""' <br /> 3.a. Select number of perforated laterals 3 <br /> b. Select perforation spacing= 3 feet °r"""�'" ^"'""x"`"° <br /> e.�...riewy wne te�w <br /> c. Subtract 2 ft from the rock layer length. <br /> �-��-2 ft._��feet <br /> d. Deternune the number of spaces between perforadons. <br /> Length perf.spacing=�ft.+�ft._�spaces Required Perforation Disch e <br /> e. �spaces+1 =.��perforations/lateral u+�t1o�+P��+�+�ce�gp� <br /> f. Muldply perforations per lateral by number of laterals to �)3 a��p, ��d8e �2 m�P,, � aa per <br /> get total number of perforations. ,,�-� x �,,, ,Q,,_�_perforations. ��c� <br /> g� � X��_�gP�� 1.Oa 0.56 0.74 <br /> SELEC'TED PUMP CAPACTTY_�_gpm 2.�b Q.8� 1.�4 <br /> B.Determine head requiremmts: a.Use for single family homes <br /> 1. Elevation difference between pump and point of discharge. b.Use for all other applications <br /> _�feet <br /> 2. If pumping to a pressure distribution system,five feet for pressure <br /> required at manifold if gravity system,zero. <br /> �feet <br /> 3. Friction loss <br /> a. Enter friction loss table with gpm and pipe diameter. �P��s� <br /> Read friction loss in feet per 100 feet from table. Poinc of D�schargo <br /> F.L.= a• �ft./100 ft of pipe �4.D <br /> b. Determine total pipe length from pump to discharge Fievadon Difference� <br /> point. Add 25 percent to pipe length for fitting �p� .1��� o <br /> loss,or use a fitting loss chart. Equivalent pipe <br /> length-1.25 times pipe length= F-18b <br /> a o x 1.25=_�,�feet <br /> c. Calculate total fricdon loss by multiplying 1.5 inch 2.0 inch 3.0 inch <br /> � rra�,�«.�i oo n�r P+a <br /> friction loss in ft/100 ft by equivalent pipe length. 10 0.69 0.20 <br /> Total fricdon loss= ''�� x �.(e +100=_�feet 12 0.96 0.2s <br /> 4. Total head required is the sum of elevation difference, 14 1.28 0.38 <br /> special head requirements,and totai fricNon loss. 16 t.63 0.48 <br /> I8 2.03 0.60 <br /> 20 2.47 0.73 0.11 <br /> �d +_�+ 1, 25 3.73 1.11 0.16 <br /> (1) (2) (3c) 30 5.23 1.55 0.23 <br /> 35 7.90 2.06 030 <br /> 40 11.07 2.64 0.39 <br /> TOTAL HEAD _,�IT feet � 45 14.73 3.28 0.48 <br /> 50 3.99 0.58 <br /> C. Pump selection 6o s� o.sz <br /> 1. A pump must be selected to deliver at least <br /> �gpm (Step A)with at least '1�1 feet of total head(Step B). <br />