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2011 purple code ,Mound Design <br />www.SepticResaurce.com (vers 15.2) <br />Property Owner: Date: <br />Site Address: 1180 Homestead Trail PID: <br />Comments: Pressure dis. <br />instructions: = enter data 0 = adjust if desired = computer calculated - DO NOT CHANGE! <br />I)F 47 bedroom Type Residential System <br />,) 600 GPD design flow <br />31 Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks <br />di 2250 Gal Septic tank (code minimum) 2250 Gal Septic tank (design size / LUG req'd) <br />Tank options: none <br />1.2 GPD/ft2 mound sand loading rate contour loading rate of F 127 req's a min =ft. long rockbed <br />r 107 ft rockbed width 50.0 ft rockbed length <br />71 3.0 ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) <br />Lend feed manifold connection <br />Laterals 48.0 feet long 17.0 perfs / lateral 51 perfs total <br />(1 /2 a perf means the first perf starts at the middle feed manifold) <br />7/32 inch perfs at =feet residual head gives 0.56 gpm flow rate per perforation <br />for this perf size Ft spacing, Ft pipe size on line 12, max perfs/lateral = 30 line #8 must be less - OK <br />in, =doses per day ( 4 minimum) <br />1 =gallons per dose (treatment volume) <br />2.00 5x <br />❑, 2.00 inch diameter laterals must be used to meet "4x pipe volume" requirement <br />2.00 3x <br />13) 133 feet of 2.0 inch supply line leads to F 23 gallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />141 173 gallons TOTAL pump out volume (treatment + drainback) <br />P29 <br />]GPM <br />feet vertical lift from pump to mound laterals, leads to a: <br />h) 24 feet of head, Pump requirement (note: -50gpm may require an extra 3-6' of head) <br />n) 500 gal Dose tank (code minimum) 1300 gal Dose tank (design size / LUG req'd) at 25.49 gpi <br />Leads to a <br />18) 6.8 inch swing on Demand float, or timed dosing of6 min ON (confirm pump rate with drawdown <br />(this delivers Average flow, =70% of Peak design flow)19hrs OFF test and adjust as necessary) <br />19)12]inches <br />inches from bottom of tank to "Pump OFF" float <br />'0 19inches from bottom of tank to "Pump ON" float, orP32 <br />inches to "Timer ON" f(oat if time dosed <br />'l) 22 from bottom of tank to "Hi Level" float, or inches to "Hi Level" float if time dosed <br />22) =gallons reserve capacity (after High Level Alarm is activated) <br />