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� <br /> ' � ' PUMP SELECTION PROCEDURE <br /> �U�: -� 1-1 ov �-- �,am��� <br /> 1. etermin pump capacity: <br /> A. ravity d'stribution <br /> 1. inimum required discharge is 10 gpm .,M�)�-t Noti.1��--�.5���m�n , M�Ax . <br /> 2. 'Maximum suggested discharge is 45 gpm. For other <br /> �establishments at least 10%greater than the water supply rate, <br /> Ibut no faster than the rate at which effluent will flow out of the <br /> distribudon device. <br /> B. ressure distribution <br /> ee pressure distribution work sheet <br /> I <br /> Frc�m A or B Selected pump capacity: ,��gpm <br /> 2. etermine pump head requirements: <br /> A. levation difference between pump and point of discharge? so�treotment system <br /> &point of discharge <br /> feet cX��:•��� �y 3 <br /> B. `pecial head requirement?(See Figure at right-Special Head Requirements) totol pipe <br /> le <br /> �_feet inlet � ��elevation <br /> C.�Calculate Friction loss pi� difference <br /> - -- - <br /> 1. Select pipe diameter a in ••-----•- •• <br /> -------------------------- -----�s� <br /> 2. Enter Figure E-9 with gpm (lA or B) and pipe diameter (Cl). <br /> Read fri�ction loss in feet per 100 feet from Figure E-9 Special Head Requirements <br /> Friction Loss= 3. ft/100ft of pipe Gravity Distribution 0 ft <br /> 3. Deterrr�ine total pipe length hom pump discharge to soil treatment Pressure Distribution 5 ft <br /> discha�ge point. Estimate by adding 25 percent to pipe length for <br /> fitting loss. Total pipe length times 1.25=equivalent pipe length E-9: Frictlon Loss in Plastic Pipe <br /> (Q v feet x 1.25 =��feet <br /> � 4.Calculate total friction loss by multiplying friction loss (C2) Per 100 fset <br /> � nominal <br /> in ft/100 ft by the equivalent pipe length(C3) and divide by 100. pipe diameter <br /> ' - 3 ."� ft/100ft x 7� +100= 3 ft flow rate 1.5^ 2" 3" <br /> - pm <br /> . Total head required is the sum of elevation difference (A),special � 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+ 3 ft= 30 523 1.55 0.23 <br /> 35 6.96 2.06 0.30 <br /> Total head: J � feet ao a.9� 2.ba o.s9 <br /> 3. Pump selection 45 l l.o� s.2s o.a8 <br /> 50 13.46 "399 � 0.58 <br /> 55 4.76 0.70 <br /> A pump must be selected to deliver at least�gpm bp 5.60 0.82 <br /> (lA or B)with at least�_feet of total head (2D) �,5 6.48 0.95 <br /> ���. 70 7.44 1.09 <br /> ;� � /5�" �'�c'�-�'-+ r.' � <br /> �S:J.� �t'`'0�� � E�� ' w� <br /> f' � ��. <br /> I hereby certify that 1 have completed this work in accordance with applicable ordinances, rules and laws. <br /> ��--�--��� �i%L-.. ------ (signature) 3`� L1 (license#) 1 �.- a.- D[� (date} <br />