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<br /> PiJMP SELECTION PROCEDURE
<br /> END PEitFORATION OF A PERFOR4TED LATERAL
<br /> � Determine pump capacity: a,..�.,,.,
<br /> � ravity Distribution T„�,,, ,�""'''
<br /> l. Minimum sugg�ested is 600 gallons per hour(10 gpm)to stay ahead of ..�:;.,;:v• � .
<br /> water use rabe. �,�„�,5s1e�,�,' .;+�w o«New rae.k cr�..•
<br /> 1aR N M�a Nrw swwN
<br /> � /y� N1�M fWn MO�)
<br /> ; 2. Maximum suggested for delivery to a drop box of a home system is 2�7W • �MM���M OrNMO MauanlNl�
<br /> YN�6?C IYar AO
<br /> gallons per hour(45 gpm)'�o prevent build-up of pressure in drop box. .,;^ '-u u.., ,:•,.E...
<br /> .��.�.,«
<br /> ressure Distibution �..o�..,s.,.,.,� ~""��""~"
<br /> l�l M�Nm N L�bnl
<br /> 3 a. Select number of perforated laterals 3
<br /> b. Select perforation spacing= 3 feet, �,����w
<br /> c. Subtrad 2 ft from the rock layer length.
<br /> ��-2 f�_.��feet
<br /> d. Deternune the number of spaces between perforations.
<br /> ; �Length perf.spacing=�ft.+�,ft._�spaces Required Perfora�n Disch e
<br /> ; e. �spaces+1=�_perforations/lateral +�8��p��+�ce cgp.+�
<br /> '' f. Muldply perforations per lateral b number of laterals to ��3a!b��, �t+uge , � �
<br /> ? t total number of rEorations.� x erforations. Hnd g2 r� i,,d,�,,
<br /> Ke .�L Pe w.�. �,,. ��_�P cfeet>
<br /> g' � X s�'w�+-.�$Pm.
<br /> � 1.Oa 0.56 0.74
<br /> SELEC`TED PUMP CAPACTI'Y�_gpm 2.�b �.8� 1.�4
<br /> : B.Determine 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 distribudon 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. ' Poinc of D;schargc
<br /> F.L._�_f�/100 Et oE pipe T9�s4.D
<br /> b. Determine total pipe length from pump to discharge Elevation Differencel
<br /> poin� Add 25 percent to pipe length for fiteng �p �,�L o
<br /> � loss,or use a fitting loss chart. Equivalent pipe
<br /> length-1.25 times pipe length=
<br /> F-18b
<br /> (�C� x 1.25=��feet 1.5 inch 20 inch 3.0 inch
<br /> ' c. Calculate total friction loss by multiplying � fr;�,,,����n�w�
<br /> i friction loss in h/100 k by equivalent pipe length.
<br /> ; 10 0.69 0.20
<br /> � Total friction loss= ��x �.(e +100=�,_feet 12 0.96 0.28
<br /> i 4. Total head required is the sum of elevation difEerence, 14 1.28 0.38
<br /> special head requirements,and total fricdon loss. 16 1.63 0.48
<br /> i • 18 2.03 0.60
<br /> ' 20 247 0.73 0.U
<br /> • �+_�+�_ 25 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 I4.73 3.28 0.48
<br /> : 50 3.99 0.58
<br /> C. Pump selection bo s.6o o si
<br /> ; 1. A pump must be selected to deliver at least
<br /> � gpm (Step A) with at least �1S feet of total head (Step B).
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