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,��11}�tiW,�"}! <br /> , � , PUMP SELECTION PROCEDURE <br /> 1. Determine pump capacity: <br /> , A. Gravity distriUution <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 ihan the rate at which effluent will flow out of the <br /> distriUution device. <br /> B. Pressure distribution <br /> See pressure distribution work sheet <br /> From A or B Selected pump capacity: � gpin <br /> 2. Determine puiyi� head requirements: <br /> A. Elevation difference between pump and point of discharge? soil treatment system <br /> ) �� feet &point of discharge <br /> °'°°^aa°' /r�.�'... <br /> B. Special head requirement? (See Figure at righf -Special Head Requirements) total pipe <br /> �! feet _ length <br /> inlet .��� "°"'�"' ` � 2A.elevation <br /> C. Calculate Friction loss -- difference <br /> P�Pe 's <br /> �� ------- -- -=; <br /> :; <br /> 1. Select pipe diameter ,=� u1 :. .................... ..�. <br /> , '=---------------------------- ---- ���� <br /> ;� <br /> :Z. �nter Figure E-9 with gpm (lA or B) and pipe diameter(C1). ``'�°��� -�����•����--� <br /> Read fricrion loss uz feet per 100 feet from Figure E-9 Special Head Requirements <br /> Friction Loss = �� �J ft/100ft of pipe Gravity Distribution 0 ft <br /> 3. Detennine total pipe length h-oin pump discharge to soil treatment Pressure Distribution 5 ft <br /> discharge point. Estimate by adding 25 percent to pipe length for <br /> fitting loss. Total pipe length times 1.25 = eguivalent pipe length <br /> ��� >` ' feet x 1.25 = '� �`�`� feet E-9: Friciion Loss in Plastic Pipe <br /> 4. Calculate total fi-iction loss by multiplying friction loss (C2) Per 100 teet <br /> nominal <br /> u1 ft/100 ft by the equivalent pipe length (C3) and divide by 100. pipe diometer <br /> = l. I . ft/100ft x �',��`<' =100= �> ft Ylow 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 3J3 1.1 l 0.16 <br /> �' ft+ .`� ft+ ft - 30 5.23 1.55 0.23 <br /> T�tal head: �'�� feet 35 6.96 2.06 0.30 <br /> _ 40 8.91 2.64 0.39 <br /> 3. ]Puinp 5electiori 45 t�.o� s,2a o.ns <br /> 50 13.46 3.99 0.5�3 <br /> A pump must be selected to deliver at least G?,�j- v�,m 55 4.76 0.70 <br /> b� 5.60 0.82 <br /> (lA or B) with at least a�J feet of total head (2D) 65 6.48 0.95 <br /> 70 7.44 1.09 <br /> I hereby certify that I have c�mpleted this work in accordance with applicable ordinances, rules and laws. <br /> r ' � <br /> d,_ :,,�''� � <br /> , __; C , � i , �." <br /> , ,_._ <br /> (signature) �.`�`�:�{;�_(license#) �'1 - �'--�-(J`I (date) <br />