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. � • ' <br /> . PUMP SELECTION PROCEDURE <br /> All boxed recfangles must be entered,the rest will be calculated. <br /> 1. Determine pump capacity: <br /> A. Gravky Dlatribution <br /> 1.Minimum required discharge 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 np faste�than the rate at which effluent will flow <br /> out of the distribution device. <br /> B. Pressure Distribution-see pressure design worksheet S°°he°f'r'er't svsfer" <br /> &p f I harge <br /> Selected Pump Capaclty: �gpm totai p�pe <br /> len <br /> 2A,elevaflon <br /> Inlet dliference <br /> 2. Determine head requirements: dr� <br /> ----�-- -- - <br /> A. Elevation difference between pump and point of discharge, -----_�---�-�� - <br /> 16 feet ....--•.................... ....... <br /> B, Special head requirement?(See F'�gure-Speclal Head Requirements) > <br /> �feet Speaal Head Requirements <br /> Gravity Distribution Oft <br /> C. Friction loss Pressure Distribution 5ft <br /> 1. Select pipe diameter �2 in <br /> 2. Enter Figure E-9 with gpm(1A�B)and pipe diameter(C1) <br /> Read�iction loss in feet 100 feet from Figure E-9 " � ���� c�� <br /> Friction loss= 1.55 ff/100 ft of pipe ���� <br /> nornfnoi <br /> pipe dame�Mat <br /> 3.Determine total pipe length from pump discharge to sal system discharge point. �+� �•5' �� �� <br /> Estimate by�ding 25 percent to pipe length for fitting loss. <br /> E uivalent i length times 1.25=total pipe length � 2.47 0.73 0.11 <br /> 250 ft x 1.25= 312,5 feet <br /> 30 5.23 1.55 0.23 <br /> 4.Calculate total fiction loss by multiplying friction loss(C2) 35 6.96 2.06 0.30 <br /> by the equivalent pipe length(C3)and divide by 100. <br /> FL= 1.55 ft/100h X 312.5 ft I 100= 4.8 feet 45 11.07 3,28 0.48 <br /> 50 13.46 3,49 0.58 <br /> D. Total head requirement is the sum of elevation difference(A),special � 5.60 0.82 <br /> head requirements(B),and total frictlon loss(C4). <br /> 16 ft + 5 ft + 4,8 ft 65 6.48 0.95 <br /> 70 7.44 1.09 <br /> Total Head: 25.8 feet <br /> 3. Pump Selection � <br /> 1.A pump must be selected to deliver at least 30 gpm(1A or B) <br /> with at least 25.8 feet of total he� 2D, <br /> I hereby ce 'fy that I have pl this wo�C in aocordance with all applicable ordinances,rules and laws. <br /> signature) ���O�. (license#) (date) <br />