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, �� , � PUMP SELECTION�P�OCEDURE� <br /> 1. Determ�ine 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 /> establishments at.least 10%greatei than the water supply rate, <br /> but no faster than the rate at which 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: ��_gp� <br /> 2. Determine pump�head�requiremen#s: <br /> A. Elevation clifference between pump and point of discharge? � soli treatmert sys;e^ <br /> I 3 feet &point of dischorgE <br /> p,�.pa'sa°s�an, n y <br /> B. Special head requirement? (See Figure at right-Special Head Requirements) . totoi plpe <br /> feet lengt <br /> inlet �� ` 2A.elevatlon <br /> C. Calculate Friction loss p�pe i difference <br /> � � .....-- -- - ' <br /> l. Select pipe diameter �- �`a �„ � � � ._.� <br /> �„ <br /> ' ---------•----------------- ------ ,r ' <br /> 2. Enter Figure E-9 with gpm (1A or B) and pipe diameter(Cl). <br /> Read friction loss in�feet per�00 feet from Figure E-9 S p e c I a I H e a d R e q u i re m e n t s <br /> Friction Loss = �•�' ft/�100ft of pipe Gravity Distributlon 0 ft I <br /> 3. Determine total pi,pe length from�pump dischazge to soil treatrnent Fressure Dlstrib,u.tion � rt <br /> discharge point. Estimate by adding 25 percent to pipe length for <br /> fitting loss. Total pipe length times 1.25=equivalent pipe length <br /> a �.v feet x 1.25 = ��a . feet E-9.; Frtctlon loss in Plastic Pipe - <br /> 4. Cal'culate total friction loss by multiplying friction loss (C2) Per 10o iset <br /> in ft/100 ft�.b .the e uiy�lent i e•len nominai <br /> Y q p'p gth(C3) and divide by 100. pipe diameter <br /> - a� � ft/100ft x 3 �S� +100=_�_ft tlow rate 1.5" 2" 3" <br /> . m <br /> D. Total head required is the sum of elevation difference (A),special� 20 2.47 0.73 0.11 <br /> head requirements.($), and total friciion loss (C4) 25 3.73 1.11 0,16 <br /> 1 3 ft+ S� ft+ `� ft= 30 5.23 1.55 0,23 � <br /> Total head: �.tQ feet 35 6.96 2.06 0.30 <br /> � 40 8.91 2.64 0.39 <br /> 3. PUIIlp SeIeCt10I1 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 . 3��nr� � 55 4.76 0.70 <br /> 1 60 5.60 0.82 <br /> (iA or B) with at least�_�feet of total head (2D) 65 6.48 0,95 <br /> 70 7.44 1,09 <br /> � :hereby certify that I have completed this work in accordance with applicable ordinances, .rules and laws. <br /> � . <br /> � � l , • �� __ (signature) 3�'7 � (license#) _� ) ) -C"L (date) I <br />