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A. Determine pump capacity: <br />Gravity Distribution END PERFORATION OF A PERFORATED LITERAL <br />1. Minimum suggested is 600 gallons per hour (10 gpm) to stay ahead of -aea Ewer <br />water use rate. <br />TepesR <br />2. Maximum suggested for delivery to a drop box of a home system is 2,700 <br />,� Lnrar of G001911116 rabic (of ,-- <br />gallons per hour (45 gpm) to prevent build-up of pressure in drop box. Lamy sena L.,.. Ma rp« ,.r a �,..,,..,., <br />Pressure Distribution <br />3. a. Select number of perforated laterals <br />b. Select perforation spacing = 9 • b ft. <br />c. Subtract 2 ft. from the rock layer length. <br />-w�-2fL= ft. <br />Pow <br />M P«Ireltew d,1hA Ila lrenrel�, <br />\RKkw,.- <br />Mpr we by <br />1t : IL �/� f',w N lnat 12' 1. Ed9. <br />•z S S- y ly ;Qlo ield of ,wee Lara <br />`V.., _ sF `1. 1. 1L ;Wren -� :: 1W' 01 <br />,1. �N.a <br />tl L'A'ti . leo - Lt . 1: I G _ Clem 5WW Lvrer <br />21 010, 1 Set, heprlr Sce11IN <br />is fie,ee Nmk%@ Send Lery <br />d. Determine the number of spaces between perforations. <br />Length perf. spacing = ft. + _ ft. = spaces <br />e. spaces + 1 = perforations/lateral <br />f. Multiply perforations per lateral by number of laterals to <br />get total number of perforations. <br />x - perforations. <br />tom.Pe c a . <br />g• -pec,, xpe1 <br />SELECTED PUMP CAPACITY l -i -) gpm <br />B. Determine head requirements: <br />�l. Elevation difference between pump and point of discharge. <br />J / 0 feet <br />2. If pumping to a pressure distributinn system, add five feet for pressure <br />required at manifold <br />feet <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. <br />F.L. = D • 'z� ft./100 ft of pipe <br />b. Determine total pipe length from pump to discharge <br />point. Add 25 percent to pipe length for fitting <br />loss, or use a fitting loss chart. Equivalent pipe <br />length -1.25 times pipe length = <br />12 0 x1.25= /(-'�) feet <br />c. Calculate total friction loss by multiplying <br />friction loss in ft/100 ft by equivalent pipe length. <br />Total friction loss = ) L- 'D x J , y +100 = feet <br />4. Total head required is the sum of elevation difference, <br />special head requirements, and total friction loss. <br />/0 + r + `(' <br />(1) (2) (30 <br />TOTAL HEAD feet <br />C. Pump selection <br />_-)l. A pump must be selected to deliver at least t -I 7 gpm (Step A) <br />with at least ;� 0 feet of total head (Step B). <br />TABLE OF PERFORATION DISCHARGES LN GPM <br />Head Perforation diameter (incus) <br />10 <br />f/A <br />1/, <br />1.Oa <br />056 <br />0.74 <br />is <br />OA9 <br />0.90 <br />2.Ob <br />0.80 <br />IN <br />2S <br />0.89 <br />1.17 <br />3.0 <br />0.98 <br />1.28 <br />4.0 <br />1.13 <br />1.47 <br />5.0 <br />1.205 <br />1.65 <br />Wait 1.0 foot of head for residential systems. <br />bUse 2-0 feet of head for other establishaunts <br />Pipe length <br />Point of Discharge <br />Elevation DiffcwncT", Ptunp <br />F -18b <br />1.5 inch 2.0 inch 3.0 inch <br />gPrn Frialal las per 100 ft of pipe <br />10 <br />0.69 <br />0.20 <br />12 <br />0.96 <br />0.28 <br />14 <br />1.28 <br />0.38 <br />16 <br />1.63 <br />0.48 <br />18 <br />2.03 <br />0.60 <br />20 <br />2.47 <br />0.73 <br />0.11 <br />25 <br />3.73 <br />1.11 <br />0.16 <br />30 <br />5.23 <br />1.55 <br />0.23 <br />35 <br />7.90 <br />2.06 <br />0.30 <br />40 <br />11.07 <br />2.64 <br />0.39 <br />45 <br />14.73 <br />3.28 <br />0.48 <br />50 <br />3.99 <br />0.59 <br />55 <br />4.76 <br />0.70 <br />60 <br />5.60 <br />0.82 <br />