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' ' . •: , . . ' PUMP SELECTTON•PROCEDURE • <br /> 1. D etermirte pump capa�a'ty: `3�^'��' *7_i - <br /> A. Gravity distribution <br /> • <br /> 1. Minimum required discharge is 10 gp t • • <br /> 2. ,Maximum siriggested'discharge is 4502n. For other' . <br /> establishments at least 10% titer than the water supply rate, <br /> but no faster than the rate a •which effluent will flow out of the • <br /> • <br /> distribution device. . . ' <br /> B. Pressure distribution ! " <br /> • <br /> See pressure'distribution work sheet <br /> From•A or B Selectedpump capacity: $'• gpm <br /> • <br /> 2. Determine pump head rquirements: . . MUL-s,-� .0o <br /> A. Elevation difference between pimp and point of discharge? • • soil treatment systl <br /> 1 feet &p. 1. ar! <br /> B. Special head requirement?(See figure at right-Special Head Requirements) • total •Ipe <br /> ' Ingt <br /> feet ' . <br /> inlet a1' <br /> • 2A,deiffleevreatnicoen <br /> C. Calculate Friction loss . pipes ' <br /> • <br /> 1. Select pipe diameter a in , 1 I , <br /> M001112. Enter Figure E-9 with gpm(14,or B)and pipe diameter(Cl) ` •°M'W° ''' n' ''' _ D <br /> Read friction loss in feet per 100 feet from Figure E-9 ' Special Head 'Requirements <br /> Friction Loss= ) . 1) ,ft/1 Oft of pipe Gravity Distribution 0 ft <br /> 3. Determine total pipe length foai.pump discharge to soil treatment Pressure Distribution 5 ft <br /> discharge point.Estimate by adding 25.percent to pipe length for . <br /> • <br /> fitting loss. Total pipe length limes 1.25 se equivalent pipe length -�.Friction Lou in Plastic Pipe - <br /> 1 0' feet x 1.25 =, 1'3 feet Per 100 feet <br /> 4. Calculate total friction loss by ultiplying friction loss(C2) • nominal <br /> • nominal <br /> in ft.by.the equiyalent, e•length(C3) and divide by 100. flow rate 1.1F'1139 <br /> diameter <br /> = 1. i I ft/100ft x., ,. +100= 1 • ft <br /> gpm <br /> D. Total head required is.the sum Of elevation difference(A),special'' 20 ' 2.47 0.73 . 0.11 <br /> head requirements.($), and total friction loss(C4) • 25 . . 3.73 1.11 0.16 <br /> r).• ft+ ' ' ft+ ' I ft: ' • 30 5.23 1.55 0.23 • <br /> Total head: eg ',fee 35 6.96 2.06 0.30 <br /> • 40 8.91 2.64 0,39 <br /> I. Pump selection • 45 11.07 128 0.48 <br /> • 50 13.46 3.99 0.58 <br /> 55 4.76 0.70 <br /> A pump must be selected to deliver at least . L.gpm • " 60 5.60 0.82 <br /> (1A or B) with at least 4f feet of total head (2D) 65 6.48 0.95 <br /> * 70 7.44 1.09 <br /> • <br /> I hereby certify that l have ompleted this work•in accordance with applicable ordinances,soles and laws. <br /> ,-/--- A . - .;____(signature) a`12 y (license#) 7 -0.1/4-1. -O Z. (date) <br />