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PUMP SELECTION PROCEDURE <br /> All boxed rectangles must be entered,the rest will be calculated. <br /> 1. Determine pump capacity: <br /> A. Gravity Distribution <br /> 1.Minimum required discharge is 10 gpm <br /> 2.Maximum suggested discharge is 45 gpm <br /> For other establishments at least 10%greater than the water <br /> supply rate,but no faster than the rate at which effluent will flow <br /> out of the distribution device. <br /> B. Pressure Distribution-see pressure design worksheet Soil lTecal-w)l sysrerr' <br /> &pgpil of ischage <br /> Selected Pump Capacity: 35.3 gpm IOIOI pipe <br /> iH.,yrt <br /> u.Ht_...s, ddrHrence <br /> 2. Determine head requirements: <br /> A. Elevation difference between pump and point of discharge. <br /> feet <br /> B. Special head requirement?(See Figure-Special Head Requirements) <br /> 1 5 Ifeet Special Head Requirements <br /> Gravity Distribution on <br /> C. Friction loss Pressure Distribution 5ft <br /> 1. Select pipe diameter in(insulate entire line) <br /> 2. Enter Figure E-9 with gpm(1A or B)and pipe diameter(CI) <br /> Read friction loss in feet per 100 feet from Figure E-9 E-9:Friction Loss in 10Irs11e Pipe- <br /> Friction loss= 2.06 I ft/100 ft of pipe Per 100 fcaet <br /> rrartirx4 <br /> Pt?(1fRIrTTak-1 <br /> 3.Determine total pipe length from pump discharge to soil system discharge point Bowrato 1. 2.' 3_ <br /> Estimate by adding 25 percent to pipe length for fitting loss. ' -----.........--- <br /> Equivalent pilength times 1.25=total pipe length '20 2.47 0.73 0.11 <br /> 75 ft x 1.25= 93.75 feet 25 3.73 1.11 0.16 <br /> 30 5.23 1.55 0.23 <br /> 4.Calculate total friction loss by multiplying friction loss(C2) 35 6.96 2.06 0.30 <br /> by the equivalent pipe length(C3)and divide by 100. 40 8.91 2.64 0.34 <br /> FL= 2.06 fl/I X 93.75 ft I 100= 1.9 feet 45 11.07 3.28 0.48 <br /> 50 13.40 3,49 0.58 <br /> D. Total head requirement is the sum of elevation difference(A),special 55 4.76 0.70 <br /> head requirements(B),and total friction loss(C4). 60 5.60 0.87. <br /> 8 ft + 5 ft + 1.9 ft 65 6.48 0.95 <br /> 70 7.44 1.0Q <br /> Total Head: 14.9 feet <br /> 3. Pump Selection <br /> 1.A pump must be selected to deliver at least 35.3 gpm(1 A or B) <br /> with at least 14.9 feet of total head(21)). <br /> I hereby certify that I have completed this work in accordance with all applicable ordinances,rules and laws. <br /> (signature) Q el (license#) (date) <br />