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2011 purple code Mound Design <br /> www SepticResource.com (vers 15.2) <br /> Property Owner: NOR-SON Date: 1/12/2017 <br /> Site Address: 540 Willow Drive S. PID: 0311723320018 <br /> Comments: <br /> instructions: = =enter data = adjust if desired = computer calculated - DO NOT CHANGE! <br /> bedroom Type Residential System <br /> 750 GPD design flow <br /> 31 Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks <br /> 41 2250 Gat 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 =req's a min 62.5 ft. long rockbed <br /> n. 10.0 ft rockbed width 62.5 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 /> s �3 laterals 60.5 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 /> U) 7/32 inch perfs at feet residual head gives 0.56 gpm flow rate per perforation <br /> for this pert size & spacing, £t pipe size on tine 12, max perfs/lateral = 30 tine#8 must be less > OK <br /> doses per day ( 4 minimum) <br /> i i 188 gallons per dose (treatment volume) <br /> 2.00 5x <br /> 12) 2.00 inch diameter laterals must be used to meet"4x pipe volume"requirement <br /> 2.00 3x <br /> 1.3) 150 feet of 2.0 inch supply line leads to26 gallons of drainback volume <br /> (Tip: "top feed" manifold to control the drainback) <br /> 14 214 gallons TOTAL pump out volume (treatment+ drainback) <br /> i1 21 Ifeet vertical lift from pump to mound laterals, leads to a: <br /> in 36 GPM @ 33 feet of head, Pump requirement (note: >50gpm may require an extra 3-6'of head) <br /> n 750 gal Dose tank (code minimum) 1300 gal Dose tank (design size / LUG req'd) at 25.49 gpi <br /> leads to a <br /> 181 8.4 inch swing on Demand float, or timed dosing of 5. min ON (confirm pump rate with drawdown <br /> (this delivers Average flow, =70%of Peak design flow)19�1 hrs OFF test and adjust as necessary) <br /> iy) 12 inches from bottom of tank to"Pump OFF"float <br /> 10 20 inches from bottom of tank to "Pump ON"float, or 12 inches to'Timer ON"float if time dosed <br /> 21 23 inches from bottom of tank to"Hi Level"float, or [:33 inches to"Hi Level"float if time dosed <br /> 22, 714 gallons reserve capacity (after High Level Alarm is activated) <br />