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07/16/2001 22:17 FAX 763497�566 SP TESTING INC C�04 <br /> � � � � � PUMP SELECTI03�T�PROe�DjJRE <br /> 1. D etermine pump capacity: <br /> A. Gravity d�istribution <br /> 1. Minimum required discharge is 10 gpm . ���,�� <br /> 2. Maximum snggested�discharge is 4S gpm. For other ���{� ��r�� <br /> establibhments at least 10°10 greater than the water supply rate, ���I��� <br /> but no faster than the rate at which effluent will flow out of the <br /> disin�ution device. � . . <br /> B. Pressure distribution <br /> See pressure distribution work sheet <br /> From A or B Selected pump capacity; 5 gpm <br /> 2. Determine pumtp head requirements: �,,,`-�, ��Lo �L�� <br /> A. Elevation difference between pump astd point of discharge? � so0 heotment system <br /> &polnt of dischorge <br /> � feet • 'b �+sS.o <br /> B. Special head requirement?(See Figure at right-Special Head Require�ner�ts) tota� <br /> len <br /> �-- feet lnlet 2A,elevctfon <br /> C. Calcu]ate Friction loss p�� dlff�erence <br /> � � � ------- - - � <br /> 1. Select pipe diameter a '� , in �,y� <br /> ----------------------- -- -- <br /> 2. Enter Figure E-9 with gpm(lA or B) and pipe diameter (Cl). <br /> Read friction loss in feet per 100 feet from Figure E-9 Special Head Requfrements <br /> Friction Loss = I, 1 ft/�100ft of pipe Gravity Distribution 0 ft <br /> 3. Determine total pipe length from pump discharge to soil treatrnent Pressure Dlstribu�tion 5 t� <br /> digcharge point.Estialate by adding 25 percent to pipe length for <br /> fit�ng loss,Total pipe length times 1.25 =equivalent pipe length <br /> �0 feet x 1.25 = I � feet E-9y Frlctlon Loss In Ploatic Pipe <br /> � Pet 100 feot <br /> 4. Cal'cvlate total friction lass by multiplying friction loss (C2) � nominal <br /> in ft/100 ft by.the equivalent pipe length(C3) and divide by 100. ipa dlcmetor <br /> - I . 1 tt/100ft x i% +100=_ 1 ft flpm� �'�� Z~ �„ <br /> D, Total head required is the sum of elevation difference (A),spedal� 20 2•Q7 0,73 0.11 <br /> head requirements (B), and tvtal fricdon loss (C4) 25 3.73 1,11 0.16 <br /> � ft+ � ft+-- - � ft= 30 5.23 1,55 0.23 <br /> Tutal head: � feet 35 6.96 2.06 o.so <br /> AO 8.91 2.bd 0.39 <br /> 3. Pump selection a5 � ��,o� 3,28 o.Qe <br /> 50 13.46 3.99 0.58 <br /> 65 4.76 0.70 <br /> A pump must be selected to deTiver at least �.S epm 6p 5.60 0.82 <br /> (lA or B)with at lea9t � feet of total head (2D) 65 6.46 0.45 <br /> 70 7.44 1.09 <br /> I hereby certity that 1 have completed this work in accordance with applicable ordinances, rules and laws. <br /> �- � , � � (signature) 3� `� (license#) 3-a a-d 1 (date) <br />