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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 /> Fa other establishments at least 10�o greater than the water <br /> supply rate,but no faster than the rate at which effluent wiil flow <br /> out of the distribution device. <br /> B. Pressure Distribution-see pressure design worksheet &pdn�t o dnschaige <br /> Selected Pump Capacity: 42 gpm i°��,��� <br /> 2A,elevatfon <br /> INet " ` difference <br /> 2. Determine head requirements: �� "�� �. 1 . . �` <br /> FF� _'""__ E <br /> ['' _ " _ ' <br /> A. Elevation difference between pump and point of discharge. `F.-�-� _------�- <br /> :F. f <br /> 'i [""'"'"""""'""""""" '_""' <br /> 11 feet <br /> g. Special head requirement?(See Figur�-Special Head Requirements) <br /> -�5-'�feet Special Head Requirements <br /> Gravity Distribution Oft <br /> C. Fricfion loss Pressu�e Distribution 5ft <br /> 1. Select pipe diameter C�in <br /> 2. Enter Figure E-9 with gpm(1A or B)and pipe diameter(C1) <br /> Read friction�oss in feet 100 feet from Figure E-9 E-9 Friction Loss in Plastic Pipe <br /> c <br /> Friction loss= 3.28 fU 100 ft of pipe per 100 ft <br /> nominal <br /> 3.Determine total pipe length from pump discharge to soil syste.m discha�ge point. Flow Rate i diameter <br /> Es6mate by adding 25 percent to pipe length for fitting loss. gpm 1.5" 2.0" 3" <br /> E uivalent i length times 1.25=total pipe length 20 2.47 0.73 0.11 <br /> 60 ft x 1.25= 75 feet 25 3.73 1.11 0.16 <br /> 30 5.23 1.55 0.23 <br /> 4.Calculate total fiction loss by multiplying friction loss(C2) 35 6.96 2.06 0.3 <br /> by the equivalent pipe length(C3)and divide by 100. 40 8.91 2.64 0.39 <br /> FL= 3.28 ff/100ft X 75 ft I 100� 3.0 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),special 55 4.76 0.7 <br /> head requirements(B),and total fiction loss(C4). 60 5.6 0.82 <br /> 11 ft + 5 ft + 3.0 ft 65 6.48 0.95 <br /> 70 7.44 1.09 <br /> Total Head: 19.0 feet <br /> 3. Pump Selection <br /> 1.A pump must be selected to deliver at least 42 gpm(1A or B) <br /> with at least 19.0 feet of total head(2D). <br /> I hereby certify that I have completed this work in accordance with all applicable ordinances,rules and laws. <br /> . ;�,r` l''�`'-'- (signature) 810 (license#) /o/`�E,/o � (date) <br /> Page 1 of 1 <br />