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2011 purple code Mound Design <br />www.5epticResource.com (vers 19.2) <br />Property Owner: Charles Kelley Date: 9/29/2020 <br />Site Address: 2720 White Oak Circle PID: 0411723420020 <br />Comments: Force Main <br />instructions: = enter data = adjust if desired 0 = computer calculated - DO NOT CHANGE! <br />1)bedroom Type Residential System <br />2) 600 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 Gal Septic tank (design size / LUG req'd) <br />Tank options: Multiple tanks or compartments req'd <br />s) 1,2 GPD/ft2 mound sand loading rate contour loading rate of 12 req"s a min F 50 Ift. long rockbed <br />6) 10.0 ft rockbed width 50.0 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) Qlaterals 48.0 feet long 17.0 perfs / lateral 51 perfs total <br />(1 /2 a perf means the first pert starts at the middle feed manifold) <br />9) 7/32 inch perfs at 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) 150 gallons per dose (treatment volume) <br />12) 200 inch diameter laterals must be used to meet "4x pipe volume" requirement <br />force main <br />13) 258 feet of 2.0 inch supply line leads to =gallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />14) 150 gallons TOTAL pump out volume (treatment + drainback) <br />15) 4 feet vertical lift from pump to mound laterals, leads to a: <br />16) 29 GPM 17 feet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) <br />17) 500 gal Dose tank (code minimum) 1000 gal Dose tank (design size / LUG req'd) at 25.00 gpi <br />leads to a: I Optional Time dosing of: <br />19) 6.0 inch swing on Demand float, (this delivers Average flow, =70% of Peak design flow) <br />5.2 min ON <br />19) 12 inches from bottom of tank to "Pump OFF" float 8.5 hrs OFF <br />20) 1 18 linches from bottom of tank to "Pump ON" float 12 inches to "Timer ON" float <br />217 1 21 linches from bottom of tank to "Hi Level" float 31 inches to "Hi Level" float <br />22) 475 gallons reserve capacity (after High Level Alarm is activated -demand dosed) <br />