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� PUMP SELECTION�PROC�T�URE� <br /> . �►� � � <br /> 1. Determine pump capacity: ��� �,,,�� p� � <br /> A. Gravity d�istribution . <br /> 1. Minimum required�discharge is 10 gpm � � <br /> 2. Maxunum suggested'discharge is 45 gpm, For other� � <br /> establishznents at,leas�10°/a gre�ter than the water supply rate, <br /> but no faster than the rate at which effluent will flow out of the <br /> disttibution device. � � <br /> S. Pressure distribution �� � � <br /> See pressure distribution work sheet <br /> From A or B Selected�pump capacity: �"(� . gpni <br /> 2. D etermine pump�head�requiremen#s: <br /> A. Elevation difference between pump and point of clischarge? � • soll treatment systen <br /> � feet &point of discharge <br /> p;!yd°�.o°?q:;:. c�S� <br /> B. Special head requirement? (See Figure at right-Special Head Reguirements) , total (pa v <br /> _ � _feet lengt � <br /> Inlet � ' �.elevatlon <br /> C. Calculate Friction loss � p�pe { difference <br /> 1. Select pipe diameter �� v in � � ... �� <br /> _ " --------------------•------ ---•-=�^Q <br /> 2. Enter Figure E-9 with gpm (lA or B) and pipe diameter(Cl). <br /> Read friction loss in�feetper�00 feet from Figure E-9 Special Head Requ(rements <br /> Friction Loss = y . �d it/•100ft of pipe Gravity Distrtbutfon p ft <br /> 3. Deternline total pxpe length from�pump discharge to soil treatment Pressure Distributfon 5 ft <br /> discharge point. Estimate by adding 25 percent to pipe length for � � <br /> fitting lvss. Total pipe length times 1.25 =equivalent pipe length <br /> � � feet x 1.25 =�feet �E-9�: Frictlon Loss In Plastic Pipe - <br /> 4. Cal'culate total friction loss by multiplying friction loss (C2) � Per 100 iset <br /> in ft/100 ft�.b .the e uiyalent. i e�len � nominai <br /> Y q p�p g.th(C3) and divide by 100. pipe dtameter <br /> _ �-I-, 4� ft/,100ft x 4`� . +100=.�ft now rate T.5" 2�� 3�� <br /> . � m <br /> D. Total head required is.the sum of eYevation difference(A),special� 2� 2.47 0.73 0.11 <br /> head requirements.(B), and total friction Ioss (C4) 25 3.73 1,11 0.16 <br /> �o ft+ .S ft+_ �, ft= . 30 5.23 1.55 0,23 � <br /> Total head: 1 � feet 35 6.96 2.06 o,so <br /> ' 40 8.91 2.64 0,39 <br />�. PUI11p Se1�Ct10I1 45 � 11.0? 3.28 0,48 <br /> 50 13.46 3,99 0,58 <br /> A pump must be selected to deliver at least��pm � �5 4.76 0.70 <br /> 60 5.60 0,82 <br /> (1A or B) with at least � feet of total head (3D) 65 6.48 0.95 <br /> 70 7.44 1,09 <br /> i hereby certify that I hav completed this work in accordance with applicable ordinances, �.rules and laws. <br /> �-' v ' ' � (signature) 3� y (license#) o� - c3•� -- C"2._. ��a te <br /> ) <br />