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PUMP SELECTION PROCEDURE <br /> All boxed rectangles must be er�ered,the rest will be calculated. <br /> 1. Determine pump capacity: <br /> A Gravity Distributlon <br /> 1.Minimum requi�ed discha�ge is 10 gpm <br /> 2.Maximum suggested discharge is 45 gpm <br /> For other establishments at least 10%greater than 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 DisMbution-see pressure design worksheet soii rreatment system <br /> &point of dischorge <br /> �:; , <br /> Selected Pump Capacity: 46.6 gpm �otai�pe <br /> length <br /> 2A.eievotion <br /> inlet "� di(ference <br /> 2. Determine head requirements: pipe ;; <br /> :: ---- : <br /> A. ElevaGon difference between pump and point of discharge. !� ' <br /> 20.25 feet '•'• = ------------------�-------- ------ <br /> I: <br /> B. Special head requirement?(See Figure-Special Head Requiremenfs) <br /> �feet Speaal Head Requirements <br /> Gravity Distribution Oft <br /> C. Friction loss Pressure Distribution 5ft <br /> 1. Select pipe diameter �2 in(insulate entire line) <br /> 2. Enter Figure E-9 with gpm(1A or B)and pipe diameter(C1) <br /> Read friction loss in feet r 100 feet from Figure E-9 �4�c�an Loss in Plaslk Pfpe <br /> Friction loss= 3.4 ff/100 ft of pipe �����1 <br /> nomna� <br /> pipe dameler <br /> 3.Determine total pipe length from pump discharge to soil system discharge point. ��u� 1•5" 2' 3' <br /> Estimate by adding 25 percent to pipe length for fitting loss. <br /> E uivalent i length Gmes 1.25=total pipe length 2Q 2•47 0.73 0.11 <br /> 205 ft x 1.25= 256.25 feet �5 3.73 1.11 0.1 b <br /> 30 5.23 1.55 0.23 <br /> 4.Calculate total fiction loss by multiplying friction loss(C2) 35 6.94 2.OG 0.30 <br /> by the equivalent pipe length(C3)and divide by 100. � 8.91 2.64 0.39 <br /> FL= 3.4 ft/100ft X 256.25 ft / 100= 8.7 feet 45 11.07 3.28 0.48 <br /> 50 13.46 3.99 0.58 <br /> D. Total head requirement is the sum of elevation difference(A),spectial � 4.76 0.70 <br /> head requirements(B),and total friction loss(C4). b0 5.60 0.82 <br /> 20.25 ft + 5 ft + 8.7 ft b5 6.48 0.95 <br /> 70 7.44 1.09 <br /> Total Head: 34.0 feet <br /> 3. Pump Selection <br /> 1.A pump must be selected to deliver at least 4&6 gpm(1A or B) <br /> with at least 34.0 feet of total head 2D. <br /> I hereby certify that I have com eted this work in accordance with all applicable ordinances,rules and laws. <br /> �� (signature) �y G�� (license#) �-2�"�� (date) <br />