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2011 purple code Mound Design <br /> www.SepticResource.com (vers 15 2) <br /> Property Owner: Hendet Homes Date: 4/18/2017 <br /> Site Address: 1840 Fox Street PID: 0311723420008 <br /> Comments: <br /> instructions: -enter data =adjust if desired 1, = computer calculated- DO NOT CHANGE! <br /> 4 bedroom Type I Residential System <br /> 600 GPD design flow <br /> 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/ft2 mound sand loading rate contour loading rate of 12 req's a min 50 ft. long rockbed <br /> 10.0 ft rockbed width , 50.0 ft rockbed length <br /> 3.0 ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) <br /> end feed manifold connection <br /> S, 3 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 1 feet residual head gives 0.56 gpm flow rate per perforation <br /> for this perf size&spacing, &pipe size on line 12, max perfs/lateral= 30 , line#8 must be less--> <br /> i(, 4.0 doses per day ( 4 minimum) <br /> 150 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 /> 122 feet of 2.0 inch supply line leads to 21 gallons of drainback volume <br /> (Tip: "top feed"manifold to control the drainback) <br /> 14' 171 gallons TOTAL pump out volume (treatment+drainback) <br /> 16 feet vertical lift from pump to mound laterals, leads to a: <br /> 16, 29 GPM® 25 ;feet of head, Pump requirement (note: >50gpm may require an extra 3-6'of head) <br /> 17: 500 gal Dose tank (code minimum) 1300 gal Dose tank(design size / LUG req'd) at 25.49 gpi <br /> leads to a <br /> !ro 6.7 inch swing on Demand float, or timed dosing of 5.9 min ON (confirm pump rate with drawdown <br /> (this delivers Average flow, =70%of Peak design flow) 9 hrs OFF test and adjust as necessary) <br /> 12 inches from bottom of tank to"Pump OFF"float <br /> 19 inches from bottom of tank to"Pump ON"float, or 12 � inches to"Timer ON"float if time dosed <br /> 22 inches from bottom of tank to"Hi Levet"float, or 32 inches to"Hi Level"float if time dosed <br /> 22 739 gallons reserve capacity (after High Level Alarm is activated) <br />