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p4mr,FLEC171012PROs 11$E <br /> F10 PERFORM!pN OF A PERrORA' ' ' LATERAL <br /> A. Determine pumpy:cApaclt "`'" <br /> Gravity Distribution r•"" � - <br /> 1. Minimum suggested is 600 gallons per ho r(10 gpm)to stay ahead of '_~^-- <br /> water use rate. ��'�a.r V'•w • '�•�'�•!�+� .v.,....wa <br /> 2. Maximum suggested for delivery to a drat'box of a home system is 2,700 <br /> gallons per hour(45 gpm)to prevent build up of pressure in drop box. ita�t-�� �- ;;•r••• <br /> ' T_Z-A <br /> waw <br /> CWe!w4 t!w Mn,n.M l81.161 <br /> ,t:sstue Distibution 3 <br /> 3.a. Select number of perforated laterals __ 11.11 ►... .����� <br /> b. Select perforation spacing fee;. M.-.0w64 <br /> C. Su act 2 ft.from the rack layer length. <br /> t.r.. ,r <br /> _2 ft,_ `>�S feet. TABLE OF PERFORATION DISC'}! %RGE•S IN G11M <br /> d. Determine the number of spaces between t'•erfora)t�io�ns. <br /> Length perf.spacing= 49 ft.+3 !t._.L spaces Head Perf-ation dtarneter 0; hes) <br /> e. 1(o spaces+.1 =•,�perforations late A <br /> f. _-Multiply perorations per.lateral b}t,numt.,r�f lateral to <br /> et total nun'iberof perforations.',.,.,. x P:,, ,�,,_�perforations. 056 074 <br /> 1.5 0.69 0.90 <br /> g. 'P6P r..t* Flo gpm, • 2.Ob 0.80 1.04 <br /> 25 0.89 1.17 <br /> SELECTED PUMP CAPACITY yo gpm 3.0 '0.98 1.28 <br /> 4 4.0 1.13 1.47 <br /> 0ermine head riquirknents: 5.0 1.26 1 1.65 <br /> ,. Elevation difference betweetlp�p and point of discharge. allw 1.0 foot of head for residents systerm. <br /> b• feet bUse 2.0 feet of head for other est.. 'ish rents <br /> 2. If pumping to a pressure distribution systet-i,five feet for pressure <br /> required at manifold if gravity spr tcm,zero. <br /> .._;5 -feet p� e7 <br /> ;I. Friction loss ; j a 0.7' - � <br /> a. Enter friction loss table with gpm and pe diameter. '�G 9 1'�. pip- <br /> Read friction loss In feet per 100 feet fri '1 table. 1 f- t of Dischar <br /> F.L.= c?,Wy ft./100 ft of pip= a � ~• <br /> b. Determine total pipe length from puntl: to discharge Elevation Dit' !nce $,6� <br /> point. Add 25 percent to pipe length ft, fitting p„n,p <br /> loss,or use a fitting loss chart. Equiva' it pipe <br /> length-1.25 times pipe length= F <br /> NO x 1.25 -feet 1.5 i h 2.0 inch 3 inch <br /> Calculate total friction loss by multiplying gpm Fr+o�tde orr., <br /> friction loss in ft/100 ft by equivalent pipe length,, E 10 0.69 0.20 <br /> Total friction loss= 42 s x�•_+100= 33' eet 12 0.96 0.28 <br /> 4. Total head required is the sum of elevation difference, 14 1.28 0.38 <br /> s head 1lirements,and total friction loss. 16 1.63 0.48 <br /> special teq 18 2.03 0.60 <br /> 5 20 2.47 0.73 0.11 <br /> ,5 + + 25 3.73 1.11 0.16 <br /> (2) - (3c) 30 5.23 1.55 0.23 <br /> 7.90 0.30 <br /> 41; <br /> TOTAL HEAD _ _feet 45 14.73 3 .28 0 <br /> 50 3.99 0.58 <br /> 55 4.76 0.70 <br /> Ftp Selection 60 5.60 0.82 <br /> 1. A primp must be selected to deliver at least <br /> qo_gpm (Step/ )with at least II feet of total head (Step 13). <br /> t' <br />