9-13-18 Septic Design - Laserfiche WebLink

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2011 purple code Mound Design www.SeplicResource,com (vers 95.2) Property Owner: William & Laurel Maclachlan Site Address: 3565 Sixth Ave. N. Date: 9/1312018 PID: 2911823430003 Comments: instructions: = - enter data ®= adjust if desired - computer calculated - DO NOT CHANGEI bedroom Type 750 GPD design flow =Garbage disposal or pumped to septic 2250 Gal Septic tank (code minimum) 1.2 GPD/ft2 mound sand loading rate Residential System 50% larger tank with multiple comp/tanks 2250 Gal Septic tank (design size / LUG req'd) Tank options: none contour loading rate of 12 req's a min 62.5 ft. long rockbed 9Q.4 ft rockbed width 63.0 ft rockbed length 3.0 ft lateral spacing 3.Q ft perforation spacing (maximum of 3 for both) end feed manifold connection laterals 61.0 feet long 21.0 perfs / lateral b3 perfs total (1 /2 a perf means the first perf starts at the middle feed manifold) 7/32 inch perfs at =feet residual head gives 0.5b gpm flow rate per perforation for this pert size rt spacing, Et pipe size on line 12, max perfs/lateral 30 , tine #8 must be less — OK la) 4.0 doses per day ( 4 minimum) 1 1) 188 gallons per dose (treatment volume) 2.00 5x 12) 2.00 inch diameter laterals must be used to meet '4x pipe volume" requirement 2.00 3x 13) 194 feet of 2.0 inch supply line leads to =gatlons of drainback volume (Tip: "top feed" manifold to control the drainback) 14) 207 gallons TOTAL pump out volume (treatment + drainback) rs} 1 15. Ifeet. vertical lift from pump to mound laterals, leads to a: 16) 1 36 GPM @ =feet of head, Pump requirement (note: >50gpm may require an extra 3-6 of head) 17) 750 gat Dose tank (code minimum) 1250 gal Dose tank (design size / LUG req'd) at 25.49 gpi leads to a 18) 8.1 inch swing on Demand float, or timed dosing of 5.8 min ON (confirm pump rate with drawdown (this delivers Average flow, -70% of Peak design flow)F--9 hrs OFF test and adjust as necessary) 19) 12 I inches from bottom of tank to 'Pump OFF" float 20) 20 linches from bottom of tank to 'Pump ON" float, or1inches to -rimer ON" float if time dosed 21) 23 inches from bottom of tank to 'Hi Level" float, or F33qinches to 'Hi Level" float if time dosed 22) b64 gallons reserve capacity (after High Level Alarm is activated)