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▲ k. oOM^r-ou • Mf-< I <br />PUMP SIILI-C I ION rROCCDUHE <br />A. Determine pump capacity: <br />Grevily DisUiliution <br />‘ 1. Minimum luggesled is 6(X) gniluns }K'r hour (10 gpm) to stay ahead of <br />water use rale. <br />2. Maximum suggested for delivery to a drop Ihix of a home system is 2,700 <br />gallons per hour (45 gpnO to prevent buil J-up of prcssuic in drop box. <br />Pressure Distribution <br />3. a. Select number of |)crfuratcd hiteials__ <br />b. Select perforation spacing «______ft> <br />CNo pcnronATicM or « pcnroRArcD lATtnAL <br />-OfMl CM <br />Upitrl <br />c. Subtmi^ 2 ft. from lock layer length.,a;gfep.m.23.(1. <br />as.' ■" <br />Kii-yiirr*' <br />‘7 <br />d. Determine the number of spaces K'tween |wrforations. * <br />Length perf. spacing ■ ft. ♦ J ft. ■ spaces <br />c. spaces♦ I • .iS^Tpcif«)r.-«iions/l:iicral <br />* f. Multiply perforations jw ialeral by number of laterals to <br />gel lolahttmber of perforations. <br />BSsr. perforations. <br />B- <br />SELBCTBO PUMf CAPACITY S/^ gpiii <br />6. Determine head requirements; <br />1. Elevation difference between pump ami point of discharge. <br />-1.2 - feet <br />2. If pumping to a pressure distribution system, add five feel for pressure <br />requlrH at manifotd ^ <br />—J—feel <br />3. Friction loss <br />a. Enter friction loss table with gpm and pipe diameter. <br />Read frkllpn loss In feel per 1U0 feel from table. <br />F.L * ft./1(» (l of pljK* <br />b. Determine lutai pipe lengili from pump to discitarge <br />poinl. Add 25 percent to pipe Icnglti for fitting <br />loss, or use a filling loss chan. Equivalent pipe <br />length • 1.25 limes pipe length « . <br />-g X 1.25 - 10 ^ feel <br />C. Calculate total friction loss by imiltiplying <br />friction loss in f(/1(X) ft by c(|uivi«k'nt pipe length. ^ <br />Total friction loss ■ x__V.7(0 »i(H) - feel <br />4. Total head required Is the sum uf elevation difference, <br />special head requirenwnts. and total friction los.s. <br />/Z- . ♦ < <br />(1) (2) Oc) <br />TOTAL IILAD feet <br />Z, Pump felecUoit _ <br />' i. A pump must be selected to deliver at least Su gpm (Step A) <br />wlUial least ^Z^feet of total head (Step D). <br />^•rs.fu.etl..r.l Uci <br />ClfM SW iMftt <br />TAUIJ: of rURFDKATION DlSCilARCUS IN Cl’M <br />I lr«a l*crr«»lton iliaiiwler (iiKlml <br />V.V. <br />0.56 <br />2.0b <br />9 % <br />0.00 <br />n ao 1 19c.a <br />3.0 <br />A A <br />ii.Qy <br />0.90 <br />111 <br />1.1/ <br />1.20 <br />1l.V <br />94) <br />1.14 <br />1.26 <br />M7 <br />145 <br />aU^c t.O fool uf Imivl for letidtnllal tyitcmi. <br />Hhe r.n frrt of Iwad for ollw Hlatillihmtwto <br />Pipe Length <br />__llNu <br />Pnin^f DiMharge <br />Eleviilon Difference <br />MBb <br />1.5 inch 2.0 inch 3.0 inch <br />61'in Priciloit hm per lOU ft oT pipe <br />10 0.6»0.20 <br />12 0.96 0.28 <br />H 1.28 0.38ir>1.63 0.48 <br />18 2.03 0.60 <br />20 2.47 0.73 0.11 <br />25 3.73 l.ll 0.16303.73 1..55 0.23 <br />3.5 7.90 2.06 0.304011.07 2.64 0.39 <br />43 14.73 3.28 0.48 <br />SO <br />55 4I>0.38 <br />0.70 <br />6(1 ■0.82