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i <br /> � � � PUMP SELECTION PROCEDURE <br /> I�i1 A- j...`. �-1-0��b�- -�,..+w��+ka- <br /> 1. D termine pump capacity: <br /> A. G avity di�tribution � <br /> 1. inimum required discharge is 10 gpm <br /> 2. aximum suggested discharge ' 45 For other <br /> e tablishmer►ts at least 10%greater than the water supply rate, <br /> b t no faster than the rate at which effluent will flow out of the <br /> tribution device. <br /> B. Pr ssure distribution <br /> Se pressure distribution work sheet <br /> � <br /> From A or B Selected pump capacity: ��gpm <br /> 2. De ermine pump head requirements: <br /> A. Ele tion difference between pump and point of discharge? pU�"'`� sa1-�ec�#�ent�ystem <br /> feet �� &- -porn#�fdischarge. <br /> °; , oy '13,� <br /> B.Spe 1 head requirement?(See Figure at right-Special Head Requirements) totol pipe <br /> le <br /> feet inlet . � �•elevation <br /> C. Cal ate Friction loss p�pe difference <br /> 1. S lect pipe diameter a. in -••••••-•--•••- •• <br /> -------------------------- ---- �5 3 y-o <br /> 2. E ter Figure L�-9 with gpm (lA or B)and pipe diameter(Cl). <br /> R ad friction loss in feet per 100 feet from Figure E-9 Special Head Requirements <br /> F 'ction Loss = 3 'a 4S ft/100ft of pipe Gravity Distribution 0 h <br /> 3. termine tatal pipe length from pump discharge to soil treatment Pressure Distribution 5 ft <br /> ' charge point. Estimate by adding 25 percent to pipe length for <br /> tting loss. Total pipe length times 1.25 =equivalent pipe length E-9: F�iction loss in Plastic Pipe <br /> 7� feet x 1.25 = a 14� feet <br /> Per 100 feet <br /> 4. C lculate total friction loss by multiplying friction loss (C2) nominal <br /> in t/100 ft by the equivalent pipe length(C3) and divide by 100. pipe diameter <br /> - 3,a� ft/100ft x a► 4� _+100= � ft flow rate 1.5" 2" 3" <br /> pm <br /> D. To 1 head required is the sum of elevation difference(A),special � 2.47 0.73 0.11 <br /> he d requirements (B),and total friction loss (C4) 25 3.73 1.11 0.16 <br /> ft+ - ft+ 7 ft= � � 30 5.23 1.55 0.23 <br /> To 1 head: �'c� feet 35 6.96 2.ob o.30 <br /> 40 8.91 2.64 0.39 <br /> 3. Pu p selection 45 11.07 �� 0.48 <br /> 50 13.46 3.99 0.58 <br /> 55 4.76 0.70 <br /> A p p must be selected to deliver at least y�g�m M 60 5.60 0.82 <br /> (lA r B)with at least��feet of total head (2D) �5 6.48 0.95 <br /> 7.44 1.09 <br /> �:f �a� <br /> �� �; <br /> � � `'w`� <br /> � <br /> I here y certify that I have completed Nhis work in accordance with applicable ordinances, rules and laws. <br /> (signature) (license#) (date) <br />