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� , '� ' PUMP SELECTION PROC�DURE ' <br /> 1. Determine pump capacity: <br /> .--.,A. Gravity distribution <br /> 1, Minimum required discharge is 10 gpm . <br /> 2. Maximum suggested dischazge is 45 gpm. For other <br /> establishments at least lU%greater than the water supply rate, <br /> but no faster than the rate at which effluent will flow out of the <br /> distribution device. <br /> B. Pressure distribution <br /> See pressure distribution work sheet <br /> From A or B Selected pump capacity: ��i' gpm <br /> 2. Determine pump head requirements: <br /> A. Elevation difference between pump and point of discharge? soq treatment system <br /> 7 feet & nt f ischarge <br /> :. �� �7 <br /> B.Special head requirement?(See Figure at right-Special Head Requirements) 1e� �Pe <br /> ��,feet 2A.elevation <br /> inlet dffference <br /> C. Calculate Friction loss p�Pe <br /> , ------- -- - <br /> L Select pipe diameter � •�� in •••"'��'"""" -' 9� <br /> 2. Enter Figure E-9 with gpm(lA or B)and pipe diameter(Cl). <br /> Read friction loss in feet per 100 feet from Figure E-9 Special Head Requirements <br /> Friction Loss= 3, ft/100ft of pipe Gravity Distri6ution 0 ft <br /> 3. Determine total pipe length from pump discharge to soil treatment Pressure Distribution 5 ft <br /> discharge point.Estimate by adding 25 percent to pipe length for <br /> fitting loss.Total pipe length times 1.25=equivalent pipe length E-9:Friction Losa in Plastic Pipe <br /> 1?,c7 feet x 1.25 = !S� feet Per 100 feet <br /> 4. Calculate total friction loss by multiplying friction loss (C2) nominal <br /> in ft/100 ft,by.the equivalent ipe length(C3) and divide by 100. flow rate � 5 ipe d2amete3n <br /> = 3• ft/100ft x / � +100=�_ft m <br /> � D. Total head required is the sum of elevation difference(A),special � 2.47 0.73 0.11 <br /> head requirements.(B,and total friction loss (C4) 25 3J3 1.11 OJ6 <br /> �_.ft+ ft+�_ft= 30 5.23 1.55 0.23 <br /> 35 6.96 2.06 0.30 <br /> Total head: feet Qo a.9i 2.ba o.39 <br /> 3. Pum selection a5 t t.07 3.28 O.aB <br /> p 50 13.46 3.99 0.58 <br /> 55 4J6 0,70 <br /> A pump must be selected to deliver at least�_gpm bp 5.60 0.82 <br /> (lA or B)with at least�_feet of total head (2D) 65 6.48 0.95 <br /> 70 7.44 1.09 <br /> I hereby certify that I have cqmplet d this work in accordance with applicable ordinances, .rules and laws. <br /> � a.-�.7 -(�3 <br /> /`� �.-�---f/�i-- ��r �� �----{signature) 3� (license#) 1 (date) <br /> � <br />