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1 � ' <br /> F-17 <br /> � PUMP SELECTTON PROCEDURE <br /> EIC PERFORATIGI OF A PEf�qiATEp IATERAL <br /> � Determine pump apacity: �..v... <br /> Graviiy Distributiaa T..,.,, , � <br /> 1. bfinimum suggested is 600 gallons per hour(10 gpm)to stay ahead of _ ,-. .. •.- - <br /> ::,'•`���•� '�_,e,�,,�c.�»nw r•ae.lc cr�as- <br /> � Ys��br�M iq�ww cawW <br /> �Ndb2t ll5e rdtE. ,�M^/.e r..�.rav.�! <br /> 2 r�iaximum suggested for delivery to a drop box of a home system is 2,700 ,, . �+-"9��a���«����•��• <br /> .,»�.�... � <br /> gallons per hour(45 gpm)to prevent build-up of pressure in drop box. ,.,;„w '�-.,�.„, ,2•,.Eao. <br /> la el Nact Lq« <br /> . ... .. �PMaaMr lan��d e� <br /> Pressure Distibutioa �. o�••,�•v.. °i14iw"u�•�� <br /> 3.a. Select number of perforated laterals 3 . <br /> b. Select perforation spacing= 3 feet °""~'�"' •,��""° <br /> �n�»��� <br /> c Subtra�ct 2 ft from the rock layer length. <br /> ���,,-2 ft=�_feet <br /> d. Deternune the number of spaces between perforations. <br /> I.ength p�f.spacutg=��ft.+ ? _ft._�spaces Required perfordtion D�sch e <br /> e. �,spaces+1=��perforations/lateral ��t►o�p�a+vroce(sP�� <br /> f. Multiply perforations per lateral b�numbe�f laterals to �f y'b,,,�, '�a8e �2��,, �ad� <br /> get total number of perforations. �� x��-�_�perforations. �f� <br /> g• � X•��_.�8p� <br /> 1.Oa 0.56 0.74 <br /> SELECT'ED PUMP CAPACITY �• 0 gpm 2.Ob 0.80 1.04 <br /> B.Determine head requiremmts: a.Use for single family homes <br /> 1. Devation difference between pump and point of discharge. b.Use for all other applications <br /> �feet <br /> 2. If pumping to a pressure distribution rystem,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. � RP��8�► <br /> Read friction loss in feet per 100 feet trom table. � Poinc of D'ucharge <br /> F.L._ �.Lti R/100 ft of pipe T�� <br /> b. Determine botal pipe length from pump to discharge Ei��adon Ditf�rrncel <br /> poin� Add 25 percent to pipe length for fitting p� �� <br /> loss,or use a fitting loss chart. Equivalent pipe p <br /> length•1.25 dmes pipe length= F-18b <br /> G t7 x 1.25= � s� feet 1.5 inch 2.0 inch 3.0 inch <br /> c. Calculate total friction loss by multiplying g� k�����J�pft�P�� <br /> friction loss in h/100 h by equivalent pipe length. <br /> Total friction loss= a.1,u x '?� +100=_,3_feet l0 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 0.48 <br /> 18 2.03 0.60 <br /> 20 2.47 0.73 0.11 <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 ._1�_feet � 45 14.73 3.28 0.48 <br /> 50 3.99 0.58 <br /> G 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 �',�feet of total head(Step B). <br />