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2011 purple code Mound Design <br />J 7nnenW a n. m <br />Property Owner: Swanson Homes <br />Site Address: 705 Pinehurst Court <br />Comments: Primary Site <br />Date: 3/10/2021 <br />PID: 0611723330013 <br />instructions: 0 = enter data = adjust if desired 0 = computer calculated - DO NOT CHANGE! <br />1) bedroom Type i ' 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) 1250 Gal Septic tank (design size / LUG req'd) <br />Tank options: Multiple tanks or compartments req'd <br />5) 1.2 GPD/ftz 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 63.0 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 />8) i ' f laterals 61.0 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 />9) 7/32 inch perfs at feet residual head gives 0.56 gpm flow rate per perforation <br />for this perf size Ft spacing, It pipe size on line 12, max perfs/lateral = 30 line #8 must be less > OK <br />la) 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) 67 feet of 2,0 inch supply line leads to =gallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />14) 199 gallons TOTAL pump out volume (treatment + drainback) <br />15) 1 14 Ifeet vertical lift from pump to mound laterals, leads to a: <br />16) 36 GPM C 22 feet of head, Pump requirement (note: >50gpm may require an extra 3.6' of head) <br />17) 750 gal Dose tank (code minimum) 1250 gal Dose tank (design size / LUG req'd) at 25,49 gpi <br />leads to a: I Optional Time dosing of: <br />1$) 7.$ inch swing on Demand float, (this delivers Average flow, =70% of Peak design flow) <br />5.5 min ON <br />19) 1 12 linches from bottom of tank to "Pump OFF" float 8.5 hrs OFF <br />20) 20 linches from bottom of tank to "Pump ON" float 12 inches to "Timer ON" float <br />21) 23 linches from bottom of tank to "Hi Level" float 33 inches to "Hi Level" float <br />22) 664 gallons reserve capacity (after High Level Alarm is activated -demand dosed) <br />