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� � ' F-17
<br /> �1
<br /> F pIJMP SELECTION p�tOCEDURE
<br /> E10 PE'RFORATION OF � PERfORaTED �eTERn�
<br /> ,� Determine pump capadty: �-c�•�
<br /> Gravity Distribution ,..,.,,
<br /> 1. Minimum suggested 'u 600 gallons per hour(70 gpm) to stay ahead of _ ;:,- •
<br /> '•��.��r`M� t.n.r N G«wnw FasrK fr�v�
<br /> water use rate. �wi�w�..1 n.,.u,w w..
<br /> ' �1r�M rwY�M4�)
<br /> 2. Maximum suggested for delivery to a drop box of a home system is 2,700 ., . ^•M.��,a���.�,.�,.,�,
<br /> tiN(.ay Iw TN
<br /> gallons per hour(45 gpm)to prevent build-up of pressure in drop box. ,.,;,,,,, � _., ,..., ,:•,. �,,.
<br /> � �1 Rxa�q.r
<br /> Pressuze Distibution ' �c��� ^^����«.�
<br /> M�vw W U�rn�
<br /> 3. a. Select number of perforated laterals 3 .
<br /> b. Select perforation spacing=�_feet °""""'""'�"'°�'�
<br /> ..�...�,.s...�.,..
<br /> c. Sub�gct 2 ft from the rock layer length.
<br /> ����-2 ft.__�fee�
<br /> d. Determine the number of spaces between perforations.
<br /> [,eIlgi�i �.Sp2Cillg=sp�„ft.+ 3 ft._�_SpdCeS Required Perfontion Disch e
<br /> e. �.spaces+ 1 =��pe.rfozations/lateral u,gzuo�p�a,;:,�ce cgp�
<br /> f. Multi 1 rforations r lateral b number of]aterals to '�
<br /> P Y Pe Pe 1� �13a ��r�. °u`►,�° �
<br /> � He�d ,�2`a P'' � aa va
<br /> get total numberof perforadons. W��,� x �,,, ,�,= l�_perforations. �f��
<br /> g. � x��=�3..gPm.
<br /> 1.Oa 0.56 0.74
<br /> SELECT'�'D PUMP CAPACITY�_gpm 2.��j Q.$Q 1.04
<br /> B.Determine head nquirements: a. Use for single family homes
<br /> i. Elevallon 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. Fricbon loss
<br /> a. Enter friction loss table with gpm and pipe diameter. � �P��8�
<br /> Read friction loss in feet per 100 feet from table. � Poini of Dischygc
<br /> F.L = �,L� ft./100 ft of pipe �o�
<br /> b. Deternune total pipe length from pump to discharge pcvation Differcnce
<br /> point Add 25 percent to pipe length for fitbng p�p -,-,y
<br /> loss,or use a fitting loss chart. Equivalent pipe
<br /> length-1.25 dmes pipe length= F-18b
<br /> /o.o� x 1.25 = I �.� feet
<br /> c. Calculate total triCtion loss b multi 1 n 1.5 inch 2.0 inch 3.0 inch
<br /> Y P Y� $ gpm fr;m�,t���oo n�r p�a
<br /> friction loss in h/100 h by equivalent pipe length.
<br /> To�il friction loss= �• x /1 S� +100= 3 feet 10 0.69 0.20
<br /> �' 12 0.96 0.28
<br /> 4. Total head required is the sum of elevation difference, 14 1.28 0.38
<br /> special head requirements,and total fricdon loss. 16 1.63 O.a8
<br /> l 8 2.03 0.60
<br /> 20 2.47 0.73 0.1I
<br /> � +�_+�_ 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 a5 ta.73 3.28 O.a8
<br /> 50 3.99 0.58
<br /> 55 4.76 0.70
<br /> C. Pump selection 6o s.bo o.e2
<br /> � 1. A pump must be selected to deliver at least
<br /> _.� �gpm (Step A) with at least fi g' feet of total head (Step B).
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