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p1ZMP SELECTION F121.EDURE <br /> A. Determine pump capacity: <br /> � <br /> Gravity Distribution ENO PERFORATION OF A PERFORATED LATERAL <br /> 1. Minimum suggested Is 600 gallons per hour(10 gpm) to stay ahead of ore••core <br /> water use rate. i; . Non ;,`,• <br /> 2. Maximum suggested for delivery to a drop box of a home system is 2,700 <br /> T„ Y ,;''L et(WIWI%iatric(a•a•. <br /> gallons per hour(45 gpm)to prevent build-up of pressure in drop box. 'Loamy s«Lor« �eiI,wkesIn .».,,.. .. <br /> a w'"-•.+.. Parao,.a oaat•d ttatr•M.ttr <br /> Pressure Distribution Mae a ►�« rap <br /> 3. a. Select number of perforated laterals 3 '�� d11•c... ‘,,.-1.1 'r'Lapw L""' 1a topn•ee <br /> b. Select perforation spacing- ft. •.;<„„, ..• <br /> y <br /> c. Subtract 2ft.from the rock layer length. Clan.. Cn Send Lam a "".4 ""''"' L <br /> at hnatl,-2 ft... S3 ft. <br /> Prep",, s•a,ine. .. <br /> Mots Meting send Leer <br /> d. Determine the number of spaces between perforations. <br /> Length perf.spacing= ft.+- .ft.xi )' spaces <br /> TABLE OF PERFORATION DISCHARGES. <br /> IN CPM <br /> e. I') spaces+ 1 = i K perforations/lateral <br /> ' f. Multiply perforations per lateral by number of laterals to Head Perforation diameter(inches) <br /> get total number of perforations. tin t/, <br /> yae x pliw•=t= g--1 perforations. <br /> 1.0a 036 0.74 <br /> g. ' x ? • 4 gpm. oo69 <br /> ib 1.04� <br /> 23 0.89 1.17 <br /> SELECTED PUMP CAPACITY 4 0 gpm 3.0 0.981.28 <br /> 4.0 1.13 1.47 <br /> 5.0 1.26 1.65 <br /> B.Determine head requirements: _ <br /> '�1. Elevation difference between pump and point of discharge. Rise 2.0 feet o heedhead dfor other establishment, <br /> of for i <br /> I feet <br /> 2. If pumping to a pressure distribution system,add five feet for pressure <br /> required at manifold <br /> ,rte feet <br /> 3. Friction loser Pipe Length <br /> a, Enter friction loss table with gpm and pipe diameter, t Point of Discharge <br /> Read friction loss in feet per 100 feet from table. k� S <br /> F.L.mg .D pipe PElevation Differrrtct:(c14 ft./100 ft of t 3 <br /> b. Determine total pipe length from pump to discharge Pump cil •D <br /> point. Add 25 percent to pipe length for fitting <br /> loss,or use a fitting loss chart. Equivalent pipe F-18b <br /> length-1.25 times pipe length- <br /> '-i l) x 1.25 e ,c-D feet gpm 1.5 <br /> Frriinaioonto.h ..0 100nofa�inch <br /> c. Calculate total friction loss by multiplying to 0.69 0.20 - <br /> friction loss in ft/100 ft by equivalent pipe length. , 12 0.96 0.28 <br /> Total friction loss= a. (42t-1 ..x +100= feet 14 1.28 0.38 <br /> 4. Total head required is the sum of elevation difference, 16 1.63 0.48 <br /> special head requirements,and total friction loss. 2.47 0.73 <br /> 18 0.11 <br /> 25 3.73 1.11 0.16 <br /> i . + . - + ) 30 5.23 1.55 0.23 <br /> (1) (2) (3c) 35 7.90 2.06 0.30 <br /> 40 11.07 2.64 0.39 <br /> ' 45 14.73 3.28 0.48 <br /> TOTAL HEAD 1 feet 50 3.99 0.58 <br /> 55 4.76 0.70 <br /> • 60 5.60 0.82 <br /> ---NC. Pump selection . - <br /> 1. A pump must be selected to deliver at least Li 0 gpm (Step A) <br /> with at least I to feet of total head (Step B). • <br />