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� I <br />. , � � PUMP SELECTIOi�T PROC��URE ���^'�"�' � <br /> 1. Determine punk�p capacity: � <br />.,A. Gravity distril�ution <br /> 1. Minimum required discharge is 10 gpm '�, <br /> 2. Maximum sugge�ted discharge is 45 gpm. For other � <br /> establishments at,least 10%greater than the water supply rate, <br /> but no faster tharu the rate at which effluent will flow out of the � <br /> distribution deviqe. <br /> B. Pressure distribution <br /> See pressure disiiribution work sheet j <br /> um ca aci : (o m s� �-�°� `'�`'�`` ' <br /> From A or B Selected p p p ty c. gp ��S,�t ,�� s <br /> . <br /> 2. Determine pump head requirements: <br /> A.Elevation difference lbetween pump and point of discharge? I�&�net o��schage <br /> �'1 feet ; I �b.c� <br /> B.Special head requirer�ent?(See Figure at right-Specinl Head Requirements) �ta�P�Pe <br /> _,�_feet � 2A.elev on <br /> inlet differ nce <br /> C. Calculate Friction los� pi� . I <br /> i ..---- <br /> 1. Select pipe diamet�r a .0 in I '�7.c� <br /> ----------------------i---- ------. <br /> 2. Enter Figure E-9 wi�th gpm(lA or B)and pipe diameter(Cl). <br /> Read fricdon loss i�feet per lU0 feet from Figure E-9 Special Head Require ents <br /> Friction Loss= L=�ft/100ft of pipe Gravity Distribution 0 h <br /> 3. Determine total pi�he length from pump dis�harge to soil treatment Pressure Distribution 5 R <br /> discharge point.E�timate by adding 25 percent to pipe length for <br /> fitting loss.Total p�pe length times 1.25=equivalent pipe length E-9:Friction Loss in Ploati Pipe <br /> �_feet x 1.25 = (��feet Per 100 feet I <br /> 4. Calculate total fricHnn loss by multiplying friction loss(C2) nominal I <br /> in ft/100 ft by the equivalent pipe length(C3) and divide by T00. pipe dlamdter <br /> - L"5' ft/100ft x (.03 +100=�_ft flpmrate 1.5" 2" I 3" <br /> D. Total head required is the sum of elevation difference{A),special � 2.47 0.73 0.11 <br /> head requirements (�),and total friction loss (C4) 25 3J3 1.11 0.16 <br /> ,�_ft+�_ft+_�_ft= � 5.23 1.55 I 0.23 <br /> Total head: _. feet 35 6.96 2.oe o.so <br /> � 40 8.91 2.64 0.39 <br />,3. Pur�p selection as 11.07 3.28 I0.48 <br /> 50 13.46 3.99 0.58 <br /> 55 4J6 OJO <br /> A pump must be select�d to eliver at least L� gpm 6p 5.60 0.82 <br /> (lA or B)with at least�feet of total head (2D) �5 6.48 I 0.95 <br /> 70 7.44 1.09 <br /> � <br /> I hereby certify that I havejco pleted this work in accardance with applicable ordinances, rules and laws.l, <br /> ' (signature) � (license#) S - - I(date) <br /> � <br /> I <br />