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1'UMl' S�L�C:'1'lUN PROCEDUI�E <br /> � 1. Determine 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°!o greater than the water supply rate, <br /> but no faster than the rate at which effluent will flow out of the <br /> distribution device. <br /> �. 1'ressure dista�ibution <br /> See pressure distribution work sheet <br /> From A or B Selected pump capacity: �t �gpm wr�� <br /> 2. Deterrnir�e pump head requirements: <br /> A. Elevation difference between pump and point of discharge? so�heatrnent systerr <br /> )a feet &point of discharge <br /> q.�•.��r• /J D.i <br /> B.Special head requirement? (See Figure at right -Special Head Requirements) total pipe <br /> feet 1e�� <br /> � inlet � �•elevation <br /> G Calculate Fricdon Ioss p�� difference <br /> ------- -- - <br /> 1. Select pipe diame#er �.0 in �--���--��-���-��•-- �� <br /> --------�------------------ ------ �d�! <br /> 2. Enter Figure E-9 with gprn(IA or B) and pipe diameter(Cl). <br /> Read friction]oss in feet per 100 feet from Figure E-9 Special Head Requirements <br /> Friction Loss = 3,a� ftJ100ft of pipe Gravity Distribution 0 ft <br /> 3. Determine total pipe lengtlt from 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=equivalent pipe length E-9: Frlction Loss in Plastic Pipe <br /> 1 t�c� feet x 1.25 = �OJ feet <br /> Per l d0 teet <br /> 4. Calculate total friction loss by multiplying friction loss (C2) nominai <br /> in ft/100 ft by the equivaler�t pipe length(C3)and divide by 100. pipe diameter <br /> = 3.a� ft/loofr x ��o =100-�_ft flow rate l.s" 2" 3" <br /> - pm <br /> D. Total head required is the sum of elevation difference(A),special 2� 2.41 0.73 0.11 <br /> head requirements(B), and total friction loss(C4) 25 3.73 1.11 0.16 <br /> 1� ft+ ft+�_ft= 30 5.2:3 1.55 0.23 <br /> T�tal heac�: � � feet 35 6.9a 2,ob o.30 <br /> 40 8.9 I 2.64 0.39 <br /> 3. Ptlrilp SeleCtiorl 45 11.07 3.28 0.48 <br /> 50 13.46 3.99 0.58 <br /> / v►'tta-'`�. 55 4J6 0.70 <br /> A pump must be selected to deliver at least�� �,pm bp 5.60 0.82 <br /> (lA or B) with at least /`y feet of total head (2D) 65 6.48 0.95 <br /> 70 7.44 1.09 <br /> I hereby certify that I�ve completed this work in accordance with applicable ordinanees, rules and laws. <br /> , <br /> � �' ��� �•��---- (signature) ��/y (license#) _ 4-��-v 7 (date) <br />