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PUMP MEMO. -PROCEDURE <br /> 1. Determine pump' capacity: <br /> A. Gravity distribution , <br /> 1. Minimum required discharge is 10 gp . <br /> 2. Maxim%im suggested'discharge Is 45 gpm. Far oiher <br /> establishments at least I ffa grepter han the supply rate, <br /> but nd faster than the rate at which effluent wMflow out of the <br /> distribution device. . <br /> B. Pressure distribution " <br /> See pressure-dis�tion work sheet <br /> From•A or B Selected-pump capacity: - .gym <br /> 2. Determine pump head-requirements: <br /> A. Elevation difference between pump and point of discharge? <br /> feet &p ar; <br /> B.Special head requirement?(See Pigure at right:-Speci l Head Requirements) total 1pe <br /> feet tenet <br /> Wet 2A.elevation <br /> C. Calculate Friction loss pipe difference <br /> 1. Select pipe diameter a in ...... <br /> 2. Enter Figure E-9 with gp=(1A or B)and pipe ter(Cl). <br /> Read friction loss in feet per 100 feet fromFig=e •9 ' Special Head Requirements <br /> Friction Loss= w.mft of pipe GravitY DistrIbution 0 ft <br /> 3. Determine total pipe length froati pump discharge to soil treatnzer<tPreisure Dlstributlon 5 ft <br /> discharge point.Estimate by adding 25,perdent to'ipipe length-for 7. <br /> fitting loss. Total pipe length times 1.25 equivalent pipe length -�Friction ons to Plastic Pipe <br /> �' • eet x 1.25 =l3 feet Per 100 feet <br /> 4. Calculate total friction loss by multiplying friction loss(C2) riominai <br /> in ft/100 ft by,the equiyalentpipe•length(0)and divide by 100. nowpipe diameters <br /> 1 I ft/100ft x=+100 1 w rata 1m 2" 311 <br /> D. Total head required is.the sum of elevation differenc¢(A),speci'al`' 20 2.47 0.73 • 0.11 <br /> head requirements.($),and total friction loss(C4) 25 3,73 1.11 0.16 <br /> ft+ ft+ t a 30 5.23 1.55 0.23 <br /> Total head: `feet 16.06 2.06 0.30 <br /> 40 8,91 2.64 0,39 <br /> I. Pump selection 11.07 3,28 0,48 <br /> 50 13.46 3,99 0,58 <br /> 55 <br /> A pump must be selected to deliver at least 4,76 0.70 <br /> 60 5.60 0.82 <br /> (1A or B) with at least ',6-" feet of total head(23D) 65 6.48 0.95 <br /> 70 7.44• 1.09 <br /> I hereby certify that I have ompieted this work-in accordance with applicable ordinaiiees,:rules and laws. <br /> AF;E cense#) 7 'oZ Vl -U Z <br /> (date) <br />