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2011 purple code Mound Desig�1j! 1 www.SepticResource.eom (vers 15.2) <br />Property Owner: Wooddale Builders <br />Site Address: 1180 Hunter Drive <br />Comments: <br />Date-, 12/6/2017 <br />PID: 2511823420006 <br />instructions: = = enter data = adjust if desired = = computer calculated - DO NOT CHANGE! <br />1) bedroom Type I I Residential System <br />2; 750 GPD design flow <br />3, Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks <br />4+ 2250 Gal Septic tank (code minimum) 2250 Gal Septic tank (design size / LUG req'd) <br />Tank options: none <br />1.2 GPD/ftz mound sand loading rate contour loading rate of F12 req's a min 62.5 ft. long rockbed <br />6) 10.0 ft rockbed width 63.0 ft rockbed length <br />7) 3.0 ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) <br />end feed manifold connection <br />8) laterals 61.D feet long 21.0 perfs / lateral 63 perfs total <br />(1 /2 a perf means the first perf starts at the middle feed manifold) <br />9 7132 inch perfs atfeet residual head gives 0.56 gpm flow rate per perforation <br />for this perf size & spacing, €t pipe size on line 12, max perfs/lateral = 30 line #8 must be less > Olt <br />lu) 4.0 doses per day (4 minimum) <br />I I } 188 gallons per dose (treatment volume) <br />2.00 5x <br />121 2.00 inch diameter laterals must be used to meet "4x pipe volume" requirement <br />2.00 3x <br />13 238 feet of 2.0 inch supply line leads to 40 gallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />14) 22$ gallons TOTAL pump out volume (treatment + drainback) <br />11 feet vertical lift from pump to mound laterals, leads to a: <br />16, 1 36 GPM C 26 feet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) <br />17) 750 gal Dose tank (code minimum) 1300 gal Dose tank (design size / LUG req'd) at 25.49 gpi <br />leads to a <br />18) 8.9 inch swing on Demand float, or timed dosing of6.3 min ON (confirm pump rate with drawdown <br />(this delivers Average flow, =70% of Peak design ftow} 9 hrs OFF test and adjust as necessary) <br />19)12 inches from bottom of tank to "Pump OFF" float <br />1o) 21 inches from bottom of tank to "Pump ON" float, orP34] <br />inches to "Timer ON" float if time dosed <br />21) 24 inches from bottom of tank to "Hi Level" float, or inches to "Hi Level" float if time dosed <br />22s 68$ gallons reserve capacity (after High Level Alarm is activated) <br />