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PUMP SELECTION PROCEDURE <br /> All boxed rectangles must be entered,the test 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 scati treatment syste rn <br /> & ••;11 . ... haver <br /> Selected Pump Capacity: 35 gpm total tape 1 <br /> !engt ! <br /> Inlet 2A.e!evc�tIon I <br /> y.= <br /> 2. Determine head requirements: �! ; _ difference! <br /> A. Elevation difference between pump and point of discharge. 11 <br /> 1 <br /> ,1 <br /> 11 feet ,t;,.., ;,.::.:.,r,. .± <br /> B. Special head requirement?(See Figure-Special Heed Requirements) <br /> 5 feet Special Head Requirements <br /> Gravity Distribution Oft <br /> C. Friction loss Pressure Distribution 5ft <br /> 1. Select pipe diameter 2 in <br /> 2. Enter Figure E-9 with gpm(1A or B)and pipe diameter(C1) LoisPlastic � <br /> E-9;Fticlan Plastic R <br /> Read friction loss in feet per 100 feet from Figure E-9 <br /> Per 100 feel <br /> Friction loss= 1 2.06 1ft/100 ft of pipe <br /> 1po <br /> 3.Determine total pipe length from pump discharge to soil system discharge point. Aowrole 1.5' domerler 2' ' <br /> Estimate by adding 25 percent to pipe length for fitting loss. t <br /> 20 <br /> E, Ivalent. 0:length times 1.25=total pipe length 2.47 0.73 0,11 <br /> 120 ft x 1.25= 150 feet 1 ' 3, 1,11 0,16' <br /> 30 5,23 1.55 0.23 <br /> 35 4.Calculate total friction loss by multiplying friction loss(C2) 6' 2.06 0.30 <br /> by the equivalent pipe length(C3)and divide by 100. 8,91 2.04 0.39 <br /> FL= 2.06 ft/100ft X 150 ft ! 100= 3.1 feet 45 11.07 3,29 0.48 <br /> 50 13.46 3,49 0.58 <br /> D. Total head requirement is the sum of elevation difference(A),special 1 4.76 0;72 <br /> head requirements(B),and total friction loss(C4). 60 560 0.82 <br /> 11 ft + 5 ft + 3.1 ft 65 6.48 0.95 <br /> 70 7.44 1.09 <br /> Total Head: 19.1 feet <br /> 3. Pump Selection <br /> 1.A pump must be selected to deliver at least 35 gpm(1A or B) <br /> with at least 19.1 feet of total head(2D). <br /> I her;, ce i, r: I have completed this work in accordance with all applicable ordinances,rules and laws. <br /> (signature) 399 (license#) 8/6/2007 <br />