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� : PUMP �ELECTION PROCEDURE <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 /> estaUlishments at least 10%greater than the water supply rate, <br /> Uut no faster than the rate at wluch effluent will flow out of the <br /> disti-iUution device. <br /> �3. Pressure distril�ution <br /> See pressure distribution work sheet <br /> �roin A or B Selected puin� capacity: 3 � g�m <br /> 2. Determine pump head requirements: <br /> A. Elevation difference between ptunp and point of discharge? soil treatment system <br /> � �, feet <br /> &point of discharge <br /> O!�O'bo"e:: �JSZ <br /> I3. Special head requirement? (See Figure at righf - Special Head IZequirements) totol pipe <br /> -.� feet length <br /> inlet .�"�'"`�`"'""•� 2A.elevation <br /> G Calculate FricHon loss � difference <br /> pipe '� <br /> ,; <br /> ------- -- -�: <br /> 1. Select pipe diameter "�, � :� �: <br /> ,....�----- -� - <br /> '� '' ----���`� <br /> ---------------------------- - <br /> _ 2. nter Figure E-9 with �pm (lA or B) and pipe diameter (Cl). <br /> Read friction loss ui feet per 100 feet from Figure E-9 Special Head Requirements <br /> Friction Loss = I_____�ft/100ft of pipe Gravity Distribution 0 ft <br /> 3. Detennine iotal pipe length fi-om puinp discharge to soil treatment Pressure Distribution 5 ft <br /> discllarge poult. Estimate Uy adding 25 percent to pipe length for <br /> fitting loss. Total pipe length times 1.25 = equivalent pipe lerigth <br /> ' �- feet x 1.25 - 15D leet E-9: Friciion Loss in Plastic Pipe <br /> �.. <br /> 4. Calculate total friction loss by multiplying friction loss (C2) Pef �DO feet <br /> in ft/100 ft by the equivalent pipe length (C3) and divide b 100. nominal <br /> y pipe diameter <br /> = l �(� ft/100ft x /�(? =100 = � {t flow rate 1.5" 2^ 3° <br /> 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 l.l 1 0.16 <br /> ��� ft+ S ft+ �, _ft = 30 5.23 1.55 0.23 <br /> Total head: _��_fe�t 35 6.96 ^2.06 0.30 <br /> __ 40 8.91 2.64 0.39 <br /> 3. I'uinp selection 45 11.07 3.28 0.48 <br /> 50 13.46 3.99 0.58 <br /> A pump must be selected to deliver at least��prri 55 4J6 OJO <br /> (lA or B) with at least 5.60 0.82 <br /> -__�_feet of total head (2D) <br /> 65 6.48 0.95 <br /> 70 7.44 1.09 <br /> I hereby certify�hat I have completed this work in accordance with applicable ordu�ances, rules and laws. <br /> ���.-. �,� ,. �! �� M __ <br /> (signature) ��I �" (license#) �'} � � �"C��j' (date) <br />