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2011 purple code Mound Design <br />www SepticResource.com (vers 15.2) <br />Property Owner: Ross Johnson <br />Site Address: 155 Wear Ln. <br />Comments: <br />instructions: = = enter data = adjust if desired <br />11 =bedroom Type Residential <br />z) 750 GPD design flow <br />11 No Garbage disposal or pumped to septic <br />Date: 10/15/2018 <br />PID: 3311823340013 <br />= = computer calculated - DO NOT CHANGE! <br />System <br />1500 Gat Septic tank (code minimum) 2500 Gat Septic tank (design size / LUG req'd) <br />Tank options: Multiple tanks or compartments req'd <br />1.2 GPD/ftz mound sand loading rate contour loading rate of 12 req's a min 62.5 ft. long rockbed <br />10.0 ft rockbed width 62.5 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 60.5 feet long 21.0 perfs / lateral 63 Jperfs total <br />(1 /2 a pert means the first pert starts at the middle feed manifold) <br />EEKI inch perfs at =feet residual head gives 0.74 gpm flow rate per perforation <br />for this pert size li spacing, E& pipe size on line 12, max perfs/lateral = 25 line #8 must be less > <br />101 4.0 doses per day (4 minimum) <br />111 188 gallons per dose (treatment volume) <br />2.00 5x <br />121 2.00 inch diameter laterals must be used to meet 'Ax pipe volume' requirement <br />2.00 3x <br />131 60 feet of 2.0 inch supply line leads to 10 gallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />141 198 gallons TOTAL pump out volume (treatment + drainback) <br />151 M47 <br />feet vertical lift from pump to mound laterals, leads to a: <br />161 GPM @ 22 feet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) <br />121 750 gal Dose tank (code minimum) 1250 gal Dose tank (design size / LUG req'd) at 29.06 gpi <br />leads to a <br />181 6.8 inch swing on Demand float, or timed dosing of 4.21hrs <br />min ON (confirm pump rate with drawdown <br />(this delivers Average flow, =70% of Peak design flow) 9 OFF test and adjust as necessary) <br />19)16 inches from bottom of tank to "Pump OFF' float <br />20) 23 inches from bottom of tank to "Pump ON" float, or [��36 <br />6 inches to 'Timer ON" float if time dosed <br />211 26 inches from bottom of tank to "Hi Level" float, or inches to "Hi Level" float if time dosed <br />22) 494 gallons reserve capacity (after High Level Alarm is activated) <br />