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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'dischazge is 45 gpm. For other <br /> establishments at.least 10%greatei than the water supply rate, <br /> but no faster than the rate at wluch 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: '-i �7 gpm <br /> 2. Determine pump head requirements: <br /> A. Elevation difference between pump and point of discharge? soil treatment system <br /> &polnt of discharge <br /> �paba'c i; <br /> ; feet a< b e�.e ;?:_ <br /> B. Special head requirement?(See Figure at right-Special Head Requirements) leng pipe <br /> �� feet 2A.elevation <br /> inlet �'" difference <br /> , <br /> C. Calculate FricHon loss plpe , <br /> - <br /> L Select pipe diameter :�.�� in ""'���"""'�"'"���� �" <br /> -------------------------- ------���'� <br /> 2. Enter Figure E-9 with gpm (1A or B) and pipe diameter (C1). <br /> � Read friction loss in feetper 100 feet from Figure E-9 Special Head Requirements <br /> Friction'Loss = � , �=^ ft/100ft of pipe , Gravity Distribution 0 ft <br /> 3. Determule total pipe 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: Eriction loss in.Plastic Pipe <br /> !"����` feet x 1.25 = /i.�< feet Per 100 feet <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. pipe.diameter <br /> flow rate 1.5" 2" 3" <br /> - ft/100ft x +100= `�;_- ft pm <br /> D. Total head required is the sum of elevation difference (A),special 20 2:47 0.73 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: �,' ��� feet �- � ao s.9� 2.ba 0.39 <br /> 45 11.07 3.28 0.48 <br /> 3. Purnp selection 50 �s,46 �3.99 0,58 <br /> 55 4J6 OJO <br /> A pump must be selected to deliver at ieast ��7 �pm 60 b.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 hereby certify that I have completed.this work in accordance with applicable ordinances, :rules and laws. <br /> . , <br /> �''�:_�, _ � i , , : -------'_-__ _-(signature) �� i �_i (license#) ��_ `;:; . ,. (date) <br />