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instructions: = = enter data = = adjust if desired = = computer calculated - DO NOT CHANGE! <br />) � 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 />41 2250 Gal Septic tank (code minimum) 2250 Gal Septic tank (design size / LUG req'd) <br />Tank options: none <br />N) 1.2 GPD/ft2 mound sand loading rate contour loading rate of 12 req's a min 62.5 ft. long rockbed <br />s: 10.0 ft rockbed width 63.0 ft rockbed length <br />11 3.0 ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) <br />end feed manifold connection <br />3) =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 />7/32 inch perfs at =feet residual head gives 0.56 gpm flow rate per perforation <br />for this perf size ft spacing, Ft pipe size on line 12, max perfs/lateral = 30 line #8 must be less --> <br />in, 4.0 doses per day (4 minimum) <br />11 188 gallons per dose (treatment volume) <br />2.00 5x <br />i^ 2.00 inch diameter laterals must be used to meet "4x pipe volume" requirement <br />3) 368 feet of 2.0 inch supply line <br />2.00 3x <br />leads to63 gallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />=gallons TOTAL pump out volume (treatment + drainback) <br />ts> 35 feet vertical lift from pump to mound laterals, leads to a: <br />)6) 1 36 JGPM C 56 feet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) <br />17) 750 gal Dose tank (code minimum) 1300 gal Dose tank (design size / LUG req'd) at 25.49 gpi <br />Leads to a <br />18) F9.8 inch swing on Demand float, or timed dosing ofB7 min ON (confirm pump rate with drawdown <br />(this delivers Average flow, =70% of Peak design flow) 9 hrs OFF test and adjust as necessary) <br />19)tinches <br />inches from bottom of tank to "Pump OFF" float <br />20) inches from bottom of tank to "Pump ON" float, orP35 <br />inches to "Timer ON" float if time dosed <br />1) from bottom of tank to "Hi Level" float, or inches to "Hi Level" float if time dosed <br />'-2) 663 gallons reserve capacity (after High Level Alarm is activated) <br />0.45 gpd/ft2 Absorption area Soil Loading Rate, which gives a mound ratio of (minimum) <br />(this must match the soil boring log) desired mound ratioF25] <br />=percent site slope (0-20% range) =(% downslope site slope, if different than upslope) <br />=inches, or 2.7 ft. to Redox or other limiting condition (need at least 12" to be a Type i) <br />Treatment zone containsF—o inches of 0% soil credit, and F 70inches of 50% soil credit. Giving a: <br />=inch, or 1.0 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONSIII <br />27) 27,0 ft.Total ABSORPTION width (with sand beyond rockbed as follows:) <br />:8) 0.0 ft. upslope and sideslope <br />" n ff r1 -- l— <br />