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R,,.3EP SYSTEM CALCULATIONS PARC: <br /> INPI-I RESULT, <br /> Est.pert.rate(mi11/in)of Shallow Soil: 250 Total calculated flow(gals/day): 300 <br /> Persons,maximum: 4 Total Flow Q with 1 factor of safety(gals/day): 300 <br /> Gallons per person per day: 75 Flow Qlf(gals)to leach line(100%of Total Flow): 300.0 <br /> Desired Leach Lines: 3.5 Flow(gals)to seepage pits(0%of Total Flow): 0.0 <br /> Desired Pits: 4 Length of leach line(ft)for 100%of total flow: 316.2 <br /> 5ystem Flaw%in Leach Line: 100.0% Sewage app.rate,leach line(gpd/sf): 0.316 <br /> Trench bottom (ft)absorption width: 2 Calc.length of each leach line(ft),total of 3.5: 90.4 <br /> 5idewall absorption height(ft): 0.5. Required flow(gaMay) per pit,total of 4: 0.0 <br /> Factor of Safety: 1 Recommended minimum seepage pit diameter. 42-in <br /> Minimum K - omm nda ion• <br /> 316 feet of leach line, one (1) 42-inch x 25 foot deep Seepage pit per line. <br /> Do 1�5y pm (Required by 5 ]GEtivirantwntal Health). <br /> Seven (7) leach lines, 90 feet each, Seven ( ) 42-inch x 25 foot deep Seepage pito. <br /> VARIABLEVARIADLE5 AND Rha - <br /> gal=gallons. <br /> gpd/5f=gallons per day per square foot. <br /> ft=feet. <br /> in=inch. <br /> PR=Percolation Rate(min/in)of shallow soil. <br /> 51-R=Sewage Loading Rate(gpd/sf)of shallow soil. <br /> TL=Total Length(ft)of trench required. <br /> Qa=Leach Field Flow(GPD). <br /> A5=Absorption surface per lineal foot of trench(ft). <br /> TB=Trench bottom absorption width(ft). <br /> 5WH=5ide wall absorption height(ft). <br /> (See Note No.1) EQUATIONS- <br /> SLR=5/(PR)^0.5 <br /> A5=T5+(2x5WH) <br /> TL=W5LR/A5 <br /> (See Note No.1) 5LR: CAI.GUI ATION - <br /> AS: 0.316-gpd/sf=5/(250-min/in)^0.5 <br /> TL: 3-ft=2-ft+(2 x 0.5-ft) <br /> 316.2-ft=300-gpd/0.316-gpd/cf/3-ft <br /> Nott No.I—US Dept of Health,EAucetion,and Wdfare,r .d 1997, <br /> Manual of Septic Tank Practice: rYNlratwn No.528,aee Figure 19,Page 47. <br /> 'oa a,o' <br /> NEIL O.ANDERSON&ASSOC.,INC. <br /> OEoIEONCN II.RN¢S-pp p ,nON TONF9 <br /> II Wu�m Ln�LOCI.C�Y4O O 4 <br /> Rol aT-9m 7 r` <br /> r30C� i <br /> SHEETI <br />