Laserfiche WebLink
PUMP SELEMON-PROCEDURE <br /> 1. Determine pump capacity: <br /> A. Gravity distribution <br /> 1. Minimum required discharge is 10 gpm <br /> 2. Maximum suggested'discharge is 45 gp n. For other <br /> establishments at.least 10%greatei:than the water supply rate, <br /> but no faster than the rate at which effluent will flow out of the <br /> distribution device. <br /> B. Pressure distribution <br /> See pressure-distribution work sheet <br /> From*A or B Selected-pump capacity: 4o gpm <br /> 2. Determine pump*head requirements: . . <br /> A. Elevation difference between pump and point of discharge? soil treatment system <br /> feet &p Int of di charge <br /> B. Special head requirement?(See Figure at right-Special Head Requirements) total Ipe <br /> feet lengt <br /> Inlet 2A.elevation <br /> C. Calculate Friction loss pipe difference <br /> 1. Select pipe diameter a 0 in <br /> 2. Enter Figure E-9 with gpm 1A or B) ' <br /> 8� ( and pipe diameter(C1). <br /> Read friction loss in feet per 100 feet from Figure E-9 Special Head Requirement s <br /> Friction Loss ft/100ftof pipe Gravity Distribution 0 ft <br /> 3. Determine total pipe length frompump discharge to soil treatment Pressure Distribution 5 ft <br /> discharge point.Estimate by adding 25 percent to pipe length for <br /> fitting loss.Total pipe length times 1.25=equivalent pipe length <br /> 8 5 feet x 1.25 = Jb (o feet E-9; Friction Loss in Plastic Pipe <br /> 4. Calculate total friction loss by multiplying friction loss (0) Per 100 feet <br /> nominal <br /> in f /100 f .by the equivalent pipe-leng-length(C ) and divideby 100. 1. ipe diameter ter <br /> ft/100ftx /n� . +100= 3 ft flow rate <br /> 2" 3" <br /> IDIOM <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) 25 3.73 1.11 0.16 <br /> �c ft+ S ft+ 3 . ft= 30 5.23 1.55 0.23 <br /> Total head: ► L+ 'feet 35 6.96 2.06 0.30 <br /> 40 8.91 2.64 0.39 <br /> I Pump selection 45 11.07 3.28 0.48 <br /> 50 13.46 3.99 0.58 <br /> A pump must be selected to deliver at least . 4 0 55 4.76 0.70 Qpm � .60 0.82 <br /> 60 5 <br /> (1A or B) with at least J_� _feet of total head (2D) 65 5.48 0.95 <br /> 70 7.44 1.09 <br /> I hereby certify that I have completed this work in accordance with applicable ordinances, .rules and laws. <br /> i �` 4---(signature) 3-� ,�(license#) 7 - 1-b ) (date) <br />