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A. Determine pump capacity: <br />Gravity Distribution <br />1. Minimum suggested is 6W gallons per hour (10 gpm) to stay ahead of <br />water use rate. <br />2. Maximum suggested for delivery to a drop box of a home system is 2,70() <br />gallons per hour (45 gpm) to prevent build-up of pressure in drop box. <br />Pressure Distribution 3 <br />3. a. Select number of perforated laterals <br />b. Select perforation spacing = 3 (1. <br />C. Su trfft 2 fl. from The rock layer length. <br />2 It. it. <br />d. Determine the number of spaces betweetl perforations. <br />Len th perf. spacing - �_ f t. + L i It. = `■1 U spaces <br />C. spaces + 1 = �L ( perforations/lateral <br />I. Multiply perforations per lateral by number of laterals to <br />MEtotal gZ r of riper fo ati <br />x r�►� _ perforations. <br />g, !ja x _ gpm. <br />SELECTED PUMP CAPACITY Yr gpm <br />B. Determine head requirements: <br />1. Elevation difference between pump and point of discharge. <br />_Al feet <br />2, if pumping to a pressure distribution system, add five feet for pressure <br />required at manifold <br />feet <br />3. Friction hats <br />a. Enter friction loss table with gpm and pipe diameter. <br />Read friction loss in feet per I feet from table. <br />F.L = 3-;) it./100flofPiPe <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 tithes pipe length = <br />100 x 1.25 = <br />c. Calculate total friction loss by multiplying <br />friction loss in (t/IOU It by equivalent pipe length. <br />Total friction loss = �� -x I asp +1(X) _ feet <br />4. Total head required is the sum of elevation difference, <br />special head requirements, and total friction loss. <br />+ -I-�l <br />+ 7 <br />111 (2) (3c) <br />TOTAL HEAD feet <br />Pump selection <br />I. A pump must be selected to deliver at least __J&f Spin (Step A) <br />with at least _L.J_ feet of total head (Step B). <br />END PER1 JRATION OF A PERFORATED LATERAL <br />Te►■eN <br />Lelrr N Ouu■W■ raD11a tar r <br />L SW L-1-1 N■rt 11, d her a 14'" CF Cd <br />oil%Ito "in ravel <br />-Pnlw.liwl O,Nled #W4-a. <br />�Mle C . Plea top <br />r <br />' 1 -N Lell I. Ed.• •l de. Loin <br />-►n1w.11ese Linter U <br />CIO" a wd Le»w Nl4w N Laeesl <br />alw+ 2N1 ►■creel/ Sewell" <br />Mlw. Pktkq Swill Lena <br />TABLE OF PERFORATION UISCHARCES IN CPM <br />I lead Perforation diermler (Inches) <br />r/n <br />1/1 <br />l.0a <br />036 <br />0.74 <br />1.3 <br />OA9 <br />0.90 <br />2.0b <br />0.80 <br />1.04 <br />2.5 <br />OJ9 <br />1.17 <br />3.0 <br />0." <br />Ila <br />4.0 <br />1.13 <br />1.47 <br />5.0 <br />116 <br />1 bS <br />sUse 1.0 foot of head for sesidenuel syslenls. <br />bUse 2.0 feet of head for other establishments <br />Pipe Length <br />Point of 1T7ischarl <br />Elevation OHfcrence� <br />PKmp <br />F• 1 ab <br />1.5 inch 2.0 inch 3.0 inch <br />Pin AkUm lm prr 100 fl of alp <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 />IS <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 />o.30 <br />40 <br />11.07 <br />2.64 <br />0.39 <br />4.S_ <br />_14,73 <br />3.28 <br />0.48 <br />50 <br />3.99 <br />0.58 <br />55 <br />4.76 <br />0.7o <br />60 <br />5.60 <br />0.82 <br />