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��) A�l�-�1 �1�•� F-17
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<br /> p'iJMP SELF.(7ION PROCEDUR�
<br /> E10 PERFOFiATION OF 4 PERfOAATED LOTERAL
<br /> A.. Determine pump capacity: w-.�...,
<br /> Gravity Distribution T�,,,,,
<br /> ]. Minimum suggested is 600 gallons per hour(70 gpm) to stay ahead of - . ' a���w�,K��,,�,.
<br /> water use rate. �`"'"S"'""' ��S"'°"'.'"°''"°''.."'°
<br /> �... .�,,a,.,'
<br /> � Maximum suggested for delivery to a drop box of a home system is 2,700 , ��'��^d���� ����^�^���
<br /> _. .. . titi c�o ,..a, ,e,
<br /> gallons per hour(45 gpm)to prevent build-up of pressure in drop box. , �,;�,w e ; -� R��,���, �,,.
<br /> �. . P�AWo1Mr��Yc�IN al
<br /> Pressure Distibudon ��.-��,.�... �"^,« U�.^'
<br /> 3. a. Select number of perforated laterals 3
<br /> b. Select perforation spadng=�_feet °""""�"' •,'^"^'�""°
<br /> BNrr V4oM S�M lAK
<br /> c. Subtract 2 ft from the rock layer length.
<br /> `�� -2 ft._��fee�
<br /> d. Detemu�e the number of spaces between perforations.
<br /> Length pesf.spacing=�ft. +�_ft.= a� spaces Requimd Perfontion Disch e
<br /> e. ,z�spaces+ 1 =�Perforations/lateral �,gauons per B,i„��e�gp�
<br /> f. Muldply perforadons per lateral by number of laterals to ��3��e�Q D�H'�'d e , maP,, � �a�
<br /> get total r►umber of perforations. ��; x �, ��_�perforations. �p�c) �'� `
<br /> g• � X��,Q,=1°L$Pm.
<br /> 1.Oa 0.56 0.74
<br /> SELECTED PUMP CAPACITY��gpm 2.�b Q.$Q 1.04
<br /> B.Determine head requirements: a. Use for single family homes
<br /> l. Elevation difference between pump and point of discharge. b. Use for all other applicaeons
<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. Friceon loss
<br /> a. Enter friction loss table with gpm and pipe diameter, Pipc Lcng�h
<br /> �
<br /> Read friction loss in feet per l00 feet from table. � Poinc of D�scharg�
<br /> F.t.. = 3•�7 ft./100 ft of pipe ioo.o
<br /> b. Deterrnine total pipe length from pump to discharge Elc�a�on Diffcrenc��
<br /> point Add 25 percent to pipe length for fitting �p _ �G,c
<br /> loss,or use a fitting]oss chart. Equivalent pipe
<br /> ]ength-1.25 bmes pipe length= F-18b
<br /> ay0 x 1.25 = 3U0 feet
<br /> c. Calculate totai friction loss b multi 1 n 1.5 inch 2.0 inch 3.0 inch
<br /> Y P Y� $ �m Friaim lm pc 100 ft of pipe
<br /> friction loss in h/100 ft by equivalent pipe length.
<br /> Total fricdon loss= x 3oa +100= feet 10 0.69 0.20
<br /> .�'�1- �--�- 12 0.96 0.28
<br /> 4. Total head requireti is the sum of elevation difference, 14 1.28 0.38
<br /> special head requirements,and total fricHon loss. 16 1.63 O.a8
<br /> l8 2.03 0.60
<br /> 20 2.47 0.73 0.1I
<br /> "z � + S + �_ ?S 3.73 1.11 0.16
<br /> (1) f2) (3c) 30 5.23 1.55 0.23
<br /> 3S 7.90 2.06 0.30
<br /> 40 11.07 2.64 0.39
<br /> TOTAL NEAD �_feet 45 14.73 3.28 O.a8
<br /> 50 3.99 0.58 i
<br /> C. Pump selection � 5:� 0:8°
<br /> ; 1. A pump must be selected to deliver at least
<br /> ._:� ��gpm (Step A) with at least ,�_ feet of Eotal head (Step B).
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