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PUMP SELECTI01 P1ZOCEDItE <br /> 1. Determine pumpcapacity: Y✓1• - <br /> A. Gravitp distribution <br /> 1. Minimu=required discharge is 10 gpr3t . <br /> 2. Maximum suggested'discharge is 45 gym. For Cher <br /> establishxnents at least 1©°�o gregtei to the*wa supply rate, <br /> but na faster than the rate at which efEl ent flow out of the <br /> dfstt bution device. <br /> B. Pressure distribution " <br /> See pressure•distnUtion work sheet <br /> From'A or B S elected'pump capacity-. 4 gpni <br /> 2. Determine pump head-requirements: <br /> A. Elevation difference between pump and point of c'lisdharge? soli treatment syst( <br /> feet &p In schcr• <br /> B. Special head requirement?(See Figure at right-Specla Head Requ&=ents) total Ipe /00 <br /> feet len <br /> Wet 2A.elevation <br /> C. Calculate Friction lossPipe difference <br /> 1. Select pipe diameter _Q-0 in ------ <br /> ........................... 1 <br /> 2. Enter Figure E-9 with gpm(IA'or B)aitd pipe diameter(Ci). fill <br /> Read friction loss irrfeet per 100feet fromFigure E,9 ' Special -Head 'Requirements <br /> Friction Loss= 3__? it/100itapipe. Gmvjty Mstribution 0 ft <br /> 3. Determine total pipe length frovi'pump discharge to soil treatment ..Pressure Distribution 5 ft <br /> discharge point.Estimate by adding 25.perdent to pipe length-for <br /> fitting loss. Total pipe length times 1.25=equivalent pipe length <br /> 3 3*' feet x 123 1l 4 t 1.9.FrtctJon Loss in Plastic Pipe <br /> = fee <br /> 4. Calculate total friction loss by multiplying fdcdon loss(C2) Per 100 feet <br /> mlnal <br /> in ft/100 ft-by.the a valent e•len riodiam <br /> qui. pip gth(C3)and d�vitle by 100. pipe diameter <br /> __7Z.-L- ft/IOOftx 414 +100 I ft now rate 1.8" 2" 311 <br /> m <br /> D. Total head required is.tate sum of elevation different (A),speci'al'' 20 2.47 0.73 - 0,11 <br /> head requireazents.(B),and total friction loss(C4) 1 25 3.73 1.11 0,16 <br /> 4V• ft+ S ' ft+_I !ft m 30 15-23 1.55 0,23 <br /> Total head: 1 y 'feet 35 6.96 2.06 0.30 <br /> 40 8.91 2.64 0,39 <br /> Pump selection 11.07 a 0.48 <br /> 50 13.46 3.99 0.58 <br /> 55 <br /> A pump must be selected to deliver at least�3• •��n " 4.76 0.70 <br /> (1A or B) with at least I H _feet of total head (2D) 66 5.60 0.82 <br /> • 66 6.48 0.95 <br /> 70 7.44• 1.09 <br /> I hereby certify that I have completed this work•in accordance th applicable ordinances, :rules and laws. <br /> (signature) 3 (license#) <br /> ._._•29 _V-4- (date) <br />