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F-17 <br />Asa. Jt• ar r <br />A. Detezmine pump capacity: <br />Gravity Distribution <br />1. Minimum suggested is 600 gallons per hour (10 gpm) to stay ahead of <br />water use ratV <br />2- Maximum sugpted-forte ivery to a drop box of a home system is 2,700 <br />gallons per h°u[�9pn .to Prevent build-up of pressure in drop box. <br />Pressure Distibution <br />3. a. Select number of perforated laterals <br />b. Select perforation spacing = feet. <br />C. Subtract 2 ft. from the rock layer length. <br />��w - 2 ft. s feet. <br />d. Determine the number of spaces between perforations. <br />length perf. spacing = ft. + ft. = spaces <br />e. spaces + i = pezforationsnatual <br />f. Multiply perforations per lateral by number of laterals to <br />get total number of perforations :. x-,_ = perforations. <br />& -pw x P., gpm. <br />SELECTED PUW CAPACITY a gpm M A.A_ <br />B. Determine head requirements: <br />1. Elevation difference between pump and point of discharge. <br />71-feet <br />2. If pumping to a pressure distribution system, five feet for pressure <br />required at manifold if gravityrsystem, zero. <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. _ _c .a % ft. /100 ft of pipe <br />b. Determine total pipe length from pump to discharge <br />point. Add 25 percei t to pipe length for fitting <br />loss, or use a fitting loss chart. Equivalent pipe <br />length -1.25 times pipe length = <br />30D x 1.25 = 3'V _ feet <br />c. Calculate total friction loss by multiplying <br />friction loss in ft/100 ft�y equivalent pipe length. <br />Total friction loss = �< 7 S x 3.; 4C +100 = i �- feet <br />4. Total head required is the sum of elevation difference, <br />special head requirements, and total friction loss. <br />-2y' + + -I Z <br />(1) (2) l30 <br />TOTAL H All j L feet <br />G Pump selection <br />1. A plump must be selected to deliver at least <br />�� gym (Step A) with at least Li 1, feet of total head (Step B). <br />m 6*x� <br />QO ► WOMTIM O/ 1 KWOIIATED LATENL <br />«� T~ <br />i.Ilw <br />Imam kam <br />•_' �.: ' uwr M frlw,r 1Wrr Ir <br />twA frrt uII, : wi �w+ w .w r rw r.w <br />.rc r: +�........, <br />=PIP, <br />i1 <br />Mrw4� IONM II <br />eft- 1.4 II,r LN <br />Prtrto-- ar <br />h+ Gallons r aT6 eIi <br />t <br />3h-6 <br />; ..,. <br />V"Q <br />1.0a <br />0.56 <br />0.74 <br />2.ob <br />0.80 <br />1.04 <br />a. Use for single family homes <br />b. Use for all other applications <br />t Pipe Lmo <br />POW O(Dbdwp <br />I:lh7evauan DiBererlx <br />Wray 1111 <br />F-lEb <br />1.5 inch 2.0 imh 3.0 inch <br />am Prhilr IM /t tGO R 1 pip <br />10 <br />0.69 <br />0.20 <br />12 <br />0.96 <br />0.2E <br />14 <br />1.2E <br />0.3E <br />16 <br />1.63 <br />0.44 <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 />3.2E-- <br />0.4E <br />50 <br />3.99 <br />0.5E <br />55 <br />4.76 <br />0.70 <br />60 <br />3.60 <br />0.82 <br />