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PUMP SELECTION PROCEDURE <br /> • . All boxed rectangles must be entered,the rest will be calculated. <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 <br /> For other establishments at least 10%greater th�the water <br /> supply rate,but no faster than the rate at which effluent will flow <br /> out of the distribution device. <br /> B. Pressure Distribution-see pressure design worksheet soi�ireaiment svstem <br /> &point ( ischoige <br /> iiiii <br /> Selected Pump Capacity: 28.6 gpm totoi�� <br /> lengt <br /> Inlet 2A.elevatio� <br /> 2. Determine head requirements: p;� ;;" ` ` " "� difference <br /> .. --- : <br /> A. Elevation difference between pump and point of discharge. " ' <br /> �; <br /> ____ ___ _; <br /> :: � <br /> 10 feet :: : ......................�-�-- -----. <br /> B. Special head requireme�t?(See Figure-Special Head Requiremer►ts) <br /> Ofeet S 'al Head R uirements <br /> Gravity Distribution Oft <br /> C. Friction loss Pressure Disfibution 5ft <br /> 1. Select pipe diameter �2 in <br /> 2. Enter Figure E-9 with gpm(1A or B)and pipe diameter(C1) <br /> : c an l.ass � as c pe <br /> Read friction loss in feet 100 feet from Figure E-9 p�100 fael <br /> Friction loss= 1.55 N 100 ft of pipe �� <br /> �pe damelar <br /> 3.Determine total pipe length from pump discharge to soii system discharge point. Ibwroie i. 2' 3' <br /> Estimate by adding 25 percent to pipe length f�fitting loss. <br /> E uivalent i length times 1.25=total pipe length 20 2,47 0.73 0,11 <br /> 20 ft x 1.25= 25 feet �' ` a.73 l.l l O.l b <br /> 30 5,23 1,55 0.23 <br /> 4.Calculate total fiction loss by multiplying fiction loss(C2) 35 6,94 2.06 0.30 <br /> by the equivalent pipe length(C3)and divide by 100. � 8,41 2.44 0.39 <br /> FL= 1.55 ft/100ft X 25 ft ! 100= 0.4 feet d5 11.07 3.28 0.48 <br /> 50 13.40 3,94 0,58 <br /> D. Total head requirement is the sum of elevation difference(A),special � 4.7b 0.70 <br /> head requirements(B),and total ficlion ioss(C4). � ��� 0.82 <br /> 10 ft + 5 ft + 0.4 ft b5 b.48 0,95 <br /> 70 7,44 1,09 <br /> Total Head: 15.4 feet <br /> 3. Pump Selection • <br /> 1.A pump must be selected to deliver at least 28.6 gpm(1A or B) <br /> with at least 15.4 feet of total head(2D). <br /> I hereb rtify that I have oompl this work in accordance with all applicable ordinances,rules and laws. <br /> (signature) �c5 Q� (Iicense#) (date) <br />