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PUMP SELECTIONPROC DUKE <br /> 1. Determine pump capacity: j <br /> ,- A. Gravity distribution <br /> 1. Minimum required discharge is 10 gpm <br /> 2. Maximum suggested'discharge is 45.gpm. For other <br /> 0 1 rate <br /> establishments at.least 1©/o.greater than the water supply , <br /> but no faster than the rate at which effluent will flow outs of the <br /> distribution device. <br /> B. 'Pressure distribution <br /> See pressure distribution work sheet <br /> From A or B. Selected'pump capacity:Z m <br /> 2. Determine pump head requirements: <br /> A.Elevation difference between pump and point of discharge soil treatment system <br /> &p Int of discharge <br /> `Z _-feet x.. . ®� <br /> B.Special head'requirement?(See Figure at right-Special Head quirements) total pipe <br /> _feet inlet �dlfference <br /> C. Calculate Friction loss pipe <br /> 1. Select pipe diameter .1.o in ._„______________________ ......./0L) <br /> 2. Enter Figure -9 with gpm(1A or B)and pipe diameter1). <br /> Read friction loss in feet per 100 feet from Figure E-9 Special Head 'Requirements <br /> Friction Loss=- 2.%o ft/.100ft of pipe 7 Gravity Distribution 0 ft <br /> 3. Determine total pipe length from pump discharge to so treatment Pressure Distribution 5 ft <br /> discharge point.Estimate by adding 25 percent to pipe ength for <br /> fitting loss.Total pipe length times 1.25=equivalent pi a length E-9: Friction loss in:Plastic Pipe <br /> L.,O , feet x 1.25 = _feet Per 100 feet <br /> 4.Calculate total friction loss by multiplying friction loss( 2) nominal <br /> in ft/100 ft.by..the equivalent pipe length(0) and divid by 100. flow rate 1.5 ipe diameter <br /> a. ft/100ftx +100= Z ft RPM <br /> D. Total head required isthe sum of elevation difference(A),special. 2.47 0.73 0.11 <br /> head requirements.(B),and total friction loss (C4) 25 3.73 1.11 0.16 <br /> � = 30 5.23 1.55 0.23 <br /> _ft+ ft+-1-ft <br /> 35, 6.96 2.06 0.30 <br /> Total head: H feet 40 8.91 2.64 0.39 <br /> 45 11.07 3.28 0.48 <br /> EEApump <br /> selection 50 13.46 3.99 0.58 <br /> 56 4.76 0.70 <br /> must be selected to deliver at least 3'1 gpm 60 5.60 0.82 <br /> )with at least I�4 -feet of total head (2D) 65 6.48 0.95 <br /> 70 V7.44 1.09 <br /> I hereby certify that I ha v completed,this work in accordance th applicable ordinances,:rules and laws. <br /> y �, (signature) 3. {license#) ty (date) <br />