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2011 purple code Pressure Bed Design <br />Property Owner: Lloyd Barthel <br />Site Address: 17801 Joplin Street NW <br />Comments: <br />Date: 5/18/2022 <br />PID: 75-481-0120 <br />nstructions: = = enter data = = adjust if desired = = computer calculated - DO NOT CHANGE! <br />bedroom Type C� Residential System <br />750 GPD design flow <br />No Garbage disposal or pumped to septic <br />1500 Gat Septic tank (code minimum) 1500 Gal Septic tank (design size / LUG req'd) <br />Tank options: multiple tanks or compartments req'd <br />0.78 GPD/ft2 Soil Loading Rate 962 ftz bed (code minimum) 1000 f t 2 (design size / LUG req'd) <br />(must match soil boring log) <br />19.0 ft desired bed width, leads to a 52.b ft bed length <br />(25' maximum) <br />3.0 Ift lateral spacing 3A ft perforation spacing (maximum 3 for both) <br />end feed manifold connection <br />laterals 50.6 feet tong 17A perfs I lateral 102 perfs total <br />(1 /2 perf means the first perf starts at the middle feed manifold) <br />3/16 inch perfs atfeet residual head gives 0.42 gpm flow rate per perforation <br />( If bed has > 1' of cover, increase residual head for cleanout req's) <br />for this perf size ft spacing, & pipe size on line 12, max perfs/lateral =1 37 1,tine #8 must be less > OK <br />10) 4.0 doses per day (4 minimum) <br />11) 1$8 gallons per dose (treatment volume) <br />12) 2.00 inch diameter laterals must be used to meet "4x pipe volume" requirement <br />13) 30 feet of 2.0 inch supply line leads to gallons of drainback volume <br />(Tip: "top feed" manifold to control the drainback) <br />14) 193 gallons TOTAL pump out volume (treatment + drainback) <br />15) feet vertical lift from pump to drainfield laterals, leads to a <br />16) 43 GPM @ 15 feet of head, Pump requirement <br />( >50 gpm may require additional 3-6 head allowance for discharge assembly) <br />