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F-17 <br /> PUMP SELECI1ON 1'ItOCGI)lali <br /> Ela PERFORATION or A PERFORATED LATERAL <br /> A. Determine pump capacity: <br /> Gravity Distribution • .---44o.Cover <br /> Tee ,1. Minimum suggested is 600 gallons per hour(10 glmi)to stay ahead of s .uns,•. .,-- <br /> ,, w.as..lw ree.lwvwater use rate. <br /> 2. Maximum suggested for delivery to a drop box of a home system is 2,7(X) ilk , r...ri, .. .. rz.fv <br /> at <br /> .e.e O.In.l <br /> 2. Maximum suggested for delivery to a drop box of a home system is la .. rz.f , e co we urikki,1,,,, <br /> gallons per hour(45 gpm)to prevent build-up of pressure in drop box, s,••. , �'"`°"" .i <br /> ,. ph. •• AI LMr1 IZ•1.UPI <br /> NId •'.id Si Rea lam <br /> Pressure Distibution . . • <br /> ._. . r-I�.r,.r.toeIN.1 <br /> Clea,SaM tore B.,ra,r,"Isere" <br /> 3.a. Select number of perforated laterals 3 <br /> b. Select perforation spacing= 3 _feet. p,,4n1 .,�.,,,!,.,ryed <br /> C. Sub <br /> a 2 fL from the rock layer length. M'Me Piecing Sand leer <br /> �� rrf-2ft.= 4.-t? feet. <br /> d. Determine the number of spaces between perforations. <br /> Length perf.spacing= Vd'ft.+ .3 ft._ /(< spaces <br /> e. %G spaces+1=/2 perforations/lateral Required Perforation Uisch e <br /> f. Multiply perforations per lateral by number of laterals to in gauons per minute(gpm, <br /> Uischirge <br /> jt total of perforations. ; xpF_�>I= 1/45-i perforations. (fee) �Z�d,�,, i Yd°"" <br /> g. . * ,x air=- gpm. <br /> SELECTED PUMP CAPAC1 FY .)a?gpm1.0a0.56 0.74 <br /> 2.0b 0.80 1.04 <br /> B.Determine head requirements: <br /> 1. Elevation difference between pump and point of discharge. a.Use for single family homes <br /> 7j feet b.Use for all other applications <br /> 2. If pumping to a pressure distribution system,five feet for pressure <br /> required at manifold if gravitys stem,zero. <br /> /9 feet <br /> • <br /> 3. Friction loss <br /> a. Enter friction loss table with gpm and pipe diameter. • <br /> Read friction loss in feet per 100 feet from table. Pipe Length <br /> F.L.= l/, v9 ft./100 ft of pipe Point of Ui.tchazg <br /> b. Determine total pipe length from pump to discharge AMMO <br /> TT <br /> •point. Add 25 percent to pipe length for fitting <br /> Elevation Difference' <br /> loss,or use a fitting loss chart. Equivalent pile �1'wnp <br /> length-1.25 times pipe length= <br /> yO x 1.25= Q Z*) feet F-18b <br /> c. Calculate total friction loss by multiplying 1.5 inch 2.0 inch 3.0 inch <br /> friction loss In ft/100 ft by equivalent pipe length, gpm IF-fiction lee.per IOOftofpipe <br /> Total friction loss= .529 x /'a2 +1(x)...� ;r feet 10 0.69 0.20 <br /> 4. Total head required is the sum of elevation dilly;ence, 12 0.96 0.28 <br /> special head requirements,and total friction los_. 14 1.28 0.38 <br /> . <br /> 16 1.632.03 0.48 <br /> ��' 18 0.60 <br /> (-__.__�_4-+____022.E._+ /7. j 20 2.47 <br /> 25 3.73 0.73 0.11 <br /> 1) (2) (3c) 1.11 0.16 <br /> 30 5.23 1.55 0.23 <br /> ?1,-5- <br /> 35 7.90 2.06 0.30 <br /> TOTAL HEAD /!•5-lei,i 40 11.07 2.61 0.39 <br /> 45 14.73 3.28 0.48 <br /> C. Pump selection 50 3.99 0.58 <br /> 55 4.76 0.70 <br /> 60 5.60 0.82 <br /> • 1. A pump must be selected to deliver at least <br /> 35' gput. (Step A)with at least c2 feet of total head (Step B). <br />