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<br /> ��� PUMP SELECTION PROCEDURE
<br /> • Fl,D PERFORATION OF A PERFORATEp L4TERAL
<br /> A. Determine pump capacity: w,,.�,..,
<br /> Gravity Distribution
<br /> TeyW!
<br /> 1. Minimum suggested is 600 gallons per hour(10 gpm)to stay ahead of ' - ;:.:- • • o��»nw�,k��,��,-
<br /> water use rate. �''''""'Soia�O"' �'°r�.'"°r�w°-w�.^°
<br /> -:.-.,_c�._,:,_�, I•�.u��.a,wo wv..�
<br /> 2. Maximum suggested for delivery to a drop box of a home system is 2�700 , . P«+e..�w�awa Nu�:miony
<br /> . . .,»WO N.a.�0
<br /> gallons per hour(45 gpm)to prevent build-up of pr�ssure in drop box. ,f.,,.�„„ ' -„�.,.,',Z•„E;,.
<br /> • MI N Roct lqN
<br /> ' .. . . , .'.:'s�.:'.:�'.:. .: .... . . . .
<br /> Pressuze Distibution � 3 . e�..�sd,.�,. `•"«a�.��«a�
<br /> B��w�M Lai�'sl
<br /> 3.a. Select number of perforated laterals
<br /> b. Select perforation spacing= .�. o fee� °"•°�°,�°�� •,.^�^�����^
<br /> B�/a��Pbu1y Sond Lay«
<br /> � c Subtract 2 ft.from the rock layer length.
<br /> ���,�,,-2 ft._��feet
<br /> d. Deterrrune the number of spaces between perforations.
<br /> L.ength perf.spacing=�ft.+ � ft._�spaces
<br /> Requind Perforation Diuhazg e
<br /> e. /6 spaces+1 a�P�{02dti0I�5/lat2Ta1 m gallons per aunute(gpm)
<br /> f. Multiply perforations per lateral by number of laterals to D��'se �
<br /> �it total numberof perforations. �,�,� x �,a���,= S/ perforations. x�d '�2`a"� �a`",,�`
<br /> g• �s X 's-�iP.,r=�8P�
<br /> 1.Oa 0.56 0.74 .
<br /> SELECTED PUNiP CAPACTI'Y .�8 gpm 2.Ob �.8� 1.�4
<br /> B.betermine head requirements: a.Use for single family homes
<br /> 1. ElevaHon 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. � Pipe Lengch
<br /> Read friction loss in feet per 100 feet from table. ' ' Po�c of D;scharg�
<br /> F.L.= Z, y� ft,/100 ft of pipe .. T
<br /> b. Determine total pipe length from pump to discharge Elevation Differencel
<br /> point, Add 25 percent to pipe length for fitting p�P
<br /> loss,or use a fitting loss chart. Equivalent pipe
<br /> length•1.25 times pipe length= ,.F 18b . �
<br /> • 7 0 x 1.25= 88 feet �
<br /> c. Calculate total fricdon loss b multi I n 1.5 inch 2.0 inch 3.0 inch
<br /> Y P Yi g gpn, ksa;��.��oo n or P�a
<br /> friction loss in ft/100 ft by equivalent pipe length. _ .
<br /> 10 0.69 0.20
<br /> . Total friction loss= ?. y/ ' x��_+100= Z feet 12 0.96 0.28
<br /> � 4. Total head required is the sum of elevation difference; �4 1.2s 0.38
<br /> special head requirements,and total friction loss. 16 1.63 0.48
<br /> 18 2.03 A.60 .
<br /> 20 2.47 0.73 0.11
<br /> �_+ S + 2 2S, 3.73 . . 1.11 . , 0.16
<br /> . . (1) (2) .(3c) 30 5.23 1.55 ' 0.23
<br /> 35 7.90 2.06 0.30
<br /> 40 11:07 2.64 0:39
<br /> TOTAL HEAD �-� feet 45 14.73 3.28 0.48
<br /> . 50 3.99 0.58
<br /> G Pump selection 6o s 60 o.si
<br /> 1. A pump must be selected to deliver at least
<br /> � 3�' gpm ,(Step A)with at least /S feet of total head (Step B). ' - •
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