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` � PUMP SELECTION PROCEDURE <br /> All boxed recfangles must be entered,fhe rest will be calculsted. <br /> � 1. Determine pump capacity: <br /> A Gravity Distribudon <br /> 1.Minimum requi�ed 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 no faster than the rate at which effluent will flow <br /> out of the disUibution device. <br /> B. Pressure DisMbutfon-see pressure design worksheef s°°fte°t",er't ayater'^ <br /> 8c pdnt ot dlscharge <br /> Selected Pump Capacity: 42 gpm totai p�pe <br /> len <br /> 2A.elevatlon <br /> Inlet dltference <br /> 2. Determine head requirements: �� <br /> A. Elevation difference between pump and point of discharge. ---- <br /> 15 feet •--•----------•-•-•-•------ -----.. <br /> g. Special head requirement?(See Figure-Special Head Requirements) <br /> Ofeet Special Head Requirements <br /> �ravity Distribution Oft <br /> C. Fnction loss Pressure Distribution 5ft <br /> 1. Select pipe diameter �in(insulate entire line) <br /> 2. Enter Figure E-9 with gpm(1A or B)and pipe diameter(C1) <br /> Read friction{oss in feet r 100 feet from Figure E-9 �¢���������� <br /> Friction loss= 3.28 ft/100 ft of pipe ���� <br /> nomlr�al <br /> pipe dameier <br /> 3.Determine total pipe length from pump discharge to soil system discharge point. 11o�+rcr�a 1•5� 2� S' <br /> Estimate by adding 25 percent to pipe length for fitting loss. <br /> E uivalent i length times 1.25=total pipe length � 2•47 D.79 0,11 <br /> 140 ft x 1.25= 175 feet <br /> 30 5,�i 1,55 O.Z3 <br /> 4.Calculate total friction loss by multiplying fiction loss(C2) �5 6.46 Z.06 D.30 <br /> by the equivalent pipe length(C3)and divide by 100. <br /> FL= 3.28 ft/100ft X 175 ft / 100= 5.7 feet 45 11.07 3.28 0.48 <br /> 50 13.46 3,44 D.58 <br /> D. Total head requirement is the sum of elevation difference(A),special <br /> head requirements(B),and total friction loss(C4). 60 5.60 0,62 <br /> 15 ft + 5 ft + 5.7 ft 65 6.48 D.95 <br /> 70 7.44 1.09 <br /> Total Head: 25.7 feet <br /> 3. Pump Selection <br /> t.A pump must be selected to deliver at least 42 gpm(1A or B) <br /> with at least 25.7 feet of total head(2D). <br /> I hereby certify that I have co ted this work in accordance with all applicable ordinances,rules and laws. <br /> (signature) ��Z� (license#) �� ��date) <br />