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2011 purple code Mound Design <br />1 � ���...111 � 1 .gepticResaurce.com (vers 15.2) <br />Property Owner: Anders Myhran <br />Date: 10/06/2017 <br />Site Address: 2280 Fox Street RID: 0311723320014 <br />Comments: <br />instructions: 0 = enter data = adjust if desired = computer calculated - DO NOT CHANGE! <br />lbedroom Type Residential System <br />450 GPD design flow <br />No Garbage disposal or pumped to septic <br />4 1000 Gal Septic tank (code minimum) 2000 'Gal Septic tank (design size 1 LUG req'd) <br />Tank options: none <br />1.2 GPD/ft2 mound sand loading rate contour loading rate of EDreq's a min 37.5 ft, long rockbed' <br />10.0 ft rockbed width 40.0 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 />laterals 38.0 feet long 13.0 perfs / latera! 39 perfs total <br />(1 /2 a pert means the first perf starts at the middle feed manifold) <br />114" inch perfs at ! lfeet residual head gives 0.74 gpm flow rate per perforation <br />for this perf size ft spacing, Et pipe size on line 12, max perfs/lateral = 16 line #8 must be less <br />7.0 doses per day { 4 minimum) <br />64 gallons per dose (treatment volume) <br />1.50 5x <br />1.50 inch diameter laterals must be used to meet "4x pipe volume" requirement <br />2.00 3x <br />131 feet of 2,0 inch supply line leads to =gallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />tot 74 gallons TOTAL pump out volume (treatment + drainback) <br />l>, 17 feet vertical lift from pump to mound laterals, leads to a. <br />tel 24 GPM @ 24 feet of head, Pump requirement (note: 550gpm may require an extra 3-6' of head) <br />l„ 500 gal Dose tank (code minimum) 1000 gal Dose tank (design size / LUG req'd) at 27,78 gpi <br />leads to a <br />sat 2,7 inch swing on Demand float, or timed dosing ofmin ON (confirm pump rate with drawdown <br />(this delivers Average flaw, =70 of Peak design flow)[��hrs OFF test and adjust as necessary) <br />191 1.8 inches from bottom of tank to "Pump OFF' float. <br />20i 2.1 inches from bottom of tank to "Pump ON" float, or18 inches to "Timer ON" float if time dosed <br />71 i 24 inches from bottom of tank to "Hi Level" float, or 34 inches to "Hi Level" float if time dosed <br />22} 333 gallons reserve capacity (after High Level Alarm is activated) <br />