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2011 purplecode Mound Design <br /> www.SepticResource.com (vers 15:2) <br /> Property Owner: Dave Mariani Date: 5/5/2016 <br /> Site Address: 1150 Homestead Trail Orono, MN PID: 28-118-23�32-0018 <br /> Comments: type 1 5 bedroom mound <br /> instructions: � =enter data � =adjust if desired � = computer calculated - DO NOT CHANGEI <br /> i> �bedroom Type � Residential System <br /> z) 750 GPD design flow <br /> 3) �Garbage disposal or pumped to septic <br /> a� 1500 Gal Septic tank(code minimum) 2?50 Gal Septic tank (design size / LUG req'd) <br /> Tank options: none <br /> s> '1.2 GPD/ft2 mound sand loading rate contour loading rate of 12 req's a min 62.5 ft. long rockbed <br /> 6> 10:0 ft rockbed width 62.5 ft rockbed length <br /> �) 3.0 ft lateral spacing 3.0 , ft perforation spacing (maximum of 3 for both) <br /> �nd feed manifold connection <br /> 8) �3 laterals 60.5 feet long 21.0 perfs / laterat 63 perts total <br /> (1/2 a perf ineans the first perf starts at the middle feed manifold) <br /> 9� 1/4" inch perfs at �feet residual head gives OJ4 gpm ftow rate per pertoration <br /> for this perf size&spacing, £t pipe size on line 12, max perfs/lateral= 25 , line#8 must be less --> OK <br /> io� 4.0 doses per day (4 minimum) <br /> i�� 188 gallons per dose (treatment volume) <br /> 2.00 5x <br /> i2� 2.00 inch diameter laterals must be used to meet"4x pipe volume" requirement <br /> 2.00 3x <br /> is� �feet of 2.0 inch supply line leads to 13 gatlons of drainback volume <br /> (Tip: "top feed"manifotd to control the drainback) <br /> ia� 201 gallons TOTAL pump out volume (treatment+ drainback) <br /> is> 10 '"feet vertical lift from pump to mound taterals, leads to a: <br /> i6) 47 GPM C� 21 feet of head, Pump requirement (note: >SOgpm may require an extra 3-6'of head) <br /> �� 750 gal Dose tank (code minimum) T50 gal Dose tank (design size / LUG req'd) at 26.fl0 ':gpi <br /> leads to a <br /> is> 7.7 inch swing on Demand float, or timed dosing of 4.3 min ON (confirm pump rate with drawdown <br /> (this delivers Average flow, =70%of Peak design flow)e9 hrs OFF test and adjust as necessary) <br /> �9� 1?` ` inches from bottom of tank to"Pump OFF'float <br /> 20� 20 inches from bottom of tank to"Pump ON"float, or 12 inches to'Timer ON"float if time dosed <br /> z�) 23 inches from bottom of tank to"Hi Level"float, or 33 inches to"Hi Level"float if time dosed <br /> 22� 152 gallons reserve capacity (after High Level Alarm is activated) <br />