Septic System - Laserfiche WebLink

Home Browse Search

" ', . ' FUMP SELEC1'.tON• 'R©LtiA/RB , • L. Determine pump capacity: ' k. Gravity disttibufion . • • •• 1. Minimum required discharge is 10 gpn • . M 2. axisnw�n suggested'dischar.g ;45,gpm. For other . establishments at least 10%ge is regter tilt=the water supply rate, • but ncitaster than the rate at which efflhent will flow out of the • diditi'bution device.• . . , . .• . Pressure distribution . - See pressure.distribution work sheet rom'A or B Selecfed'pump.capacitp: y 0'• gpm • • Determine pump'head•requirements: , . • Elevation difference between pump and point of discharge? ' • • soil treatment syst &p•I • •Ischar /0 feet o:k.9.-.1.kd;,.. 0 Special head requirement?(See Figure at right-Special Head Requirements) , total •Ipe Tenet 5 feet • 2A.elevation • ' Inlet i,""'''"""'"'"''„ ' '" difference Calculate Friction loss . pipe. � • 1. Select pipe diameter Z •• 111111K1,1111 re o2. Enter Figure E-9 with gpm(7A o•r B)aiid pipe diameter(• C1) ••.-�~' ^""'•' Read friction loss lrrfeet per 100feet from FigureE-9" • ' ' . Special Head Requirements Friction Loss = 3, - / ,ft/• .00ft of pipe ' • •. Gravity Distribution 0 ft 3. Determine total pipe length from pump dscharge to soil treatment ,Pressure DlstrIb,itlon 5 ft discharge point.Estimate by adding 25.percent to pipe length•for '• fitting loss. Total pipe length times 1.25:equivalent pipe length -9• Friction Loss in Plastic Pipe - ( '0• feet x 1.25 : ' feet • • • . • Per 100 feet . Calculate total friction loss by multiplying friction loss (C2)' •' Hominy! in•ft/100 ft by.the equivalent pipe!length(C3)•and divide by 100. pIpe diameter 3.Z-- ft/,100ft x, 1 S . +100= ft flow rat. 1.5" 2" 3" ;pm Total head required is the.sum of elevation difference(A),special" 20 ' 2.47 . 0.73 • 0.11 head requirepnents.(13),and total friction Ioss (C4) 25 . , 373 1.11 0.16 10• ft+ 5' . Z ft- . . , 30 5.23 1.55 0,23 • 19 '�eet 35 6.96 2.06 0.30 Total head: � 40 • 8,91 2.64 0,39 'ulzlp selection45 50 11.07 3,28 0.48 13.46 3.99 0.58 55 4.76 0.70 .pump must be selected to deliver at least . 4 r) ' •gpm 60 5.60 0.82 :A or B) with at least_.LZ.,_feet of total head(2D) • ' 65 6.48 0.95 70 7.44 • 1.09 ereby certify that I ve completed this work in accordance with applicable ordinances,,rules and laws.