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PUMP SELECTION 1'ROCEDURE <br /> 1. Determine pump capacity: ��.}�N�Q �`'a _ <br /> , ---.A. Gravity distribution <br /> 1. Minimum required discharge is 10 gpm <br /> 2. Maximum suggested discharge is 45 gpm. For other <br /> estaU�ishments at least 10%greater than the water supply rate, <br /> but nb faster than the rate at which effluent will flow out of the <br /> disttibution device. <br /> B. Pres�ure distribution <br /> See pressure distribution work sheet <br /> From A or B Selected pump capacity: _ 4o gpm <br /> 2. Determine pump head requirements: ��� <br /> A. Elevation difference between pump and point of discharge? so7 treatment system <br /> I 3 feet � &point of discharge <br /> t�a c�� . <br /> y �. <br /> B.Special head requirement?(See Figure at right - Special Head Requirements) totol pipe <br /> lengt <br /> .S feet � 2A.elevation <br /> inlet " difference <br /> C. Calculate Friction loss pipe <br /> ------- -- - <br /> 1. Select p�pe diameter � in .................._ .. <br /> � --------------------------- ------� 9 3.o <br /> _ 2. Enter Figut�e E-9 with gpm(lA or B) and pipe diameter(Cl). <br /> Read fricHon loss u1 feet per 100 feet from Figure E-9 Special Head Requirements <br /> Friction Loss= a�l� ft/100ft of pipe Gravity Distribution 0 ft <br /> 3. Deternune total pipe length from puinp discharge to soil treatment Pressure Distribution S 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 <br /> �� feet x 1.25 - J o C) feet • E-9: Friction Loss in Plastic Pipe <br /> 4. Calculate total friction loss by multiplying friction loss (C2) Per 100 feet <br /> nominal <br /> in ft/100 ft by the equivalent pipe length(C3) and divide by 100. pipe diameter <br /> _ �•�.• ft/100ft x ��� +100= �3 ft flow rate 1.5" 2" 3" <br /> pm <br /> la. Total head required is the.sum of elevation difference (A),special 20 2.47 OJ3 0.11 <br /> head requii-ements (B), and total friction loss (C4) 25 3J3 1.11 0.16 <br /> 1 3 ft+ S ft+ 3 ft= 30 5.23 1.55 0.23 <br /> Total head: a o feet 35 6.96 Z.ob o.30 <br /> 40 8.91 2.64 0.39 <br /> 3. Pu�np selection 45 >>.o� 3.28 0.48 <br /> 50 13.46 3.99 0.58 <br /> A pump musN be selected to deliver at least y D g-pm 5'' 4J6 0.70 <br /> � 5.60 0.82 <br /> (lA or B)with at least � 1 feet of total head (2D) 65 , 6.48 0.95 <br /> 70 7.44 1.09 <br /> I hereby certi t�at I have completed this work in accordance with applicable ordinances, rules and laws. <br /> � L7%� G' -.-- <br /> J� (signature) 3`� � (license#) _ /(� - �d-O� (date) <br />