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2011 purple code Mound Design <br /> www.SepticResource.com (vers 19,2) <br /> Property Owner: Mary Dunn Trust Date: 5/10/2020 <br /> Site Address: N/A PID: 3211823340006 <br /> Comments: <br /> instructions: =enter data =adjust if desired = computer calculated - DO NOT CHANGE! <br /> 1) 5 bedroom Type 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 Gat Septic tank(design size / LUG req'd) <br /> Tank options: none <br /> 5) 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 /> 7) 3.0 ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) <br /> end feed manifold connection <br /> 8) 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 /> 7/32 inch perfs at 1 feet residual head gives 0.56 gpm flow rate per perforation <br /> for this perf size Et spacing, Et pipe size on line 12, max perfs/lateral= 30 , line#8 must be less--> OK <br /> 10) 4.0 doses per day (4 minimum) <br /> 11) 188 gallons per dose (treatment volume) <br /> 12) 2.00 inch diameter laterals must be used to meet"4x pipe volume"requirement <br /> 13) feet of 2.0 inch supply line leads to #####gallons of drainback volume <br /> (Tip: "top feed" manifold to control the drainback) <br /> 14) ######gallons TOTAL pump out volume (treatment+drainback) <br /> is) feet vertical lift from pump to mound laterals, leads to a: <br /> 16) 36 GPM @ ##### feet of head, Pump requirement (note: >50gpm may require an extra 3-6'of head) <br /> 17) 750 gal Dose tank(code minimum) 1250 gat Dose tank(design size / LUG req'd) at 25.49 gpi <br /> leads to a: J Optional Time dosing of: <br /> 18) ######inch swing on Demand float, (this delivers Average flow, =70%of Peak design flow) <br /> ##### min ON <br /> 19) 12 inches from bottom of tank to"Pump OFF float ##### hrs OFF <br /> 20) ######inches from bottom of tank to"Pump ON"float 12 inches to"Timer ON"float <br /> 21) ######inches from bottom of tank to"Hi Level"float ##### inches to"Hi Level"float <br /> 22: ######gallons reserve capacity (after High Level Alarm is activated-demand dosed) <br />