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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 discharge is 45 gpm. For other <br /> establishments at least 10%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: 3 q gpm <br /> 2. Determine pump head requirements: <br /> A. Elevation difference between pump and point of discharge? so�treatment system <br /> &point f ischarge <br /> ) �, feet ,.... �9 y <br /> B. Special head requirement?(See Figure at right-Special Head Requirements) 1e�P�Pe <br /> �_feet 2A.elevation <br /> inlet difference <br /> C.Calculate Friction loss p�� <br /> ------- -- - <br /> 1. Select pipe diameter �•D in ...'....�'.'�. � �� <br /> .......................... .......`� <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 Spe c i a l H e a d Re q u i re m e n ts <br /> Friction Loss= �• � ft/100ft of pipe Gravity Distribution 0 ft <br /> 3. Determute total pxpe 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: Fdction Losa in Plastic Pipe <br /> �_feet x 1.25 = 00 feet Per100 teet <br /> 4. Calculate total friction loss by multiplying friction loss (C2) nominal <br /> in ft/100 ft,by the equivalent pipe length(C3) and divide by 100. flow rate �.�ipe d2amete3� <br /> - �,•to ft/100ft x /00 +100=__,:�___ft pm <br /> D. Total head required is the sum of elevadon difference(A),special 20 2.47 OJ3 0.11 <br /> head requirements (B ,and total friction loss (C4) 25 3.73 1.11 0.16 <br /> �ft+�,_ft+�_ft= 30 5.23 1.55 0.23 <br /> 35 6.96 2.06 0.30 <br /> Total head: a feet ao a9i 2.ba o.39 <br /> 45 11.07 3.28 0.48 <br /> 3. Purnp selection 50 13.46 3.99 0.58 <br /> 55 4.76 OJO <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 hereb certity that I ha e co leted this work in accordance with applicable ordinances, rules and laws. <br /> � •�. � ` si ature) �g (license#) .���-''d� (date) <br /> .a ( g„ <br /> s <br />