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• 'h. -1MP SELECTION•PROCEDURE (-11 . $e.S <br /> • <br /> 1. Determine pump capacity: ldovo4e.t <br /> A. Gravity distribution • d4 cc-. -� � },�yil`''4 sv <br /> 1. Minimum required discharge is 10 gpm • '� 1 '�' <br /> • <br /> 2. Maximum suggested discharge is 45 gpm. For Other r jAkJ� _ <br /> . establishments at least 10%greater than the water supply rate, ,o0 9,.i • <br /> • ' but no faster than the rate at which effluent will flow out of the . -'- �/ 0 -1'. <br /> distribution device. 20o9,.% <br /> B. Pressure distribution -ill-Pow-vi L' <br /> See pressure distribution worksheet c1/41-04s- vet. 60%„1+14 $ <br /> to L1 g..1,144cn�e 5")146.1.1/43 td+4GX <br /> From•A or B Selected pump capacity: a vl gpm <br /> 2.Determine pump head requirements: �w' ' 'C <br /> A.);levation difference between pump and point of discharge? so!treatment�- <br /> PS feetystem <br /> • &•,,r •tdlschape <br /> B.Special head requirement?(See Figure at right-Specr'a1 Head Requirements) £7(''S told•E•r. r <br /> feet - H�s <br /> lens <br /> . C.C.alculate Friction loss �3 g niet elevation <br /> pipe V AJvC difference <br /> • <br /> 1. Seiectpipediameter I!i`1 in �i' ,,aq "*02. Enter Figure E-9 with gpm(lA or B)and pipe diameter(Cl). ��` <br /> . Read friction loss in feet per 100.feet from FigureE-9 Special Head Requirements <br /> Friction Loss=• ' '7. 9 ft/100ft of pipe i ' Gravity Distribution 0 ft <br /> 3. Determine total pipe length from'pump discharge to soil treatment Pressure Distribution 5 ft <br /> •discharge point.Estimate by adding 25 percent tp pipe length for9 . <br /> fitting loss.Total pipe length times 1.25=equivalent pipe length' <br /> feet x 1.25= A 3 1 feet i <br /> I ei S E-9:Friction.loss In Plastic Pipe <br /> 4.Calculate total friction loss by multiplying friction loss(C2) Per 100 feet <br /> in ft/100 ft by. equivalent pipe lengthnominal <br /> y q pip (C3)and divide by 100. . ppipe diameter <br /> _ O.°i ft/100ft X ?,3 l +100= 14 ! ft flow rate 1.5" 2" 3" <br /> • I gpm <br /> D. Total head required is the sum of elevation difference(A),special ' 20 • 2.47 0.73 0.11 <br /> head requirements(B),and total friction loss.(C4) i , 25 3.73 1.11 0.16 <br /> 1 'S - f + - ft+ ) . ft= i `6 gat J leo 30 5.23 1.55 0.23 <br /> • Total head: ' 3 3 feet i 35 6.96 2,06 0.30 <br /> ; 40 8:91 2.64 0.39 <br /> 3. Pump selection ,I . 45 11.07 3.28 0.48 <br /> 13.46 3.99 0.58 . <br /> A pump must be selected to deliver at least ai 5 pm 76 0.70 <br /> (1A or B)with at least 3 . feet of total head(2D) 60 6.48 0.95 <br /> 65 6.48 0.95 <br /> 70 7.44 1.09 <br /> • <br /> ' I hereby certify that!have c pleted this work in accorda►ce with applicable ordinances, rules and laws. <br /> ,f( -‘:5 - • <br /> (signature) ' 3'0.--) (license#) a-1(.7-)s-- (date) <br /> • <br /> • <br /> • <br /> 1 <br /> • <br /> • FEB 12 2015 <br /> CITY OF ORONO <br /> 3718 . <br />