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5Y5TEM CALCULATIONS <br /> INPUT: RFSIII TT• <br /> Ert. pert. rate (min/in) of Shallow roil: 125 Total calculated flow(gals/day): 210 <br /> Persons, maximum: 3 Total Flow Q with 1.5 factor of Safety(gals/day): 315 <br /> Gallons per peroon per day: 70 Flow Qlf(gale)to leach line (100%of total Flow): 315.0 <br /> Desired Leach Liner: 3 Flow (gals)to seepage pito(0%of Total Flow): 0.0 <br /> Desired Fite: 3 Length of leach line(ft)for 100%of total flow: 234.8 <br /> 5yetem Flow% in Leach Line: 100.0% Sewage app. rate, leach line (gpd/of): 0.447 <br /> Trench bottom (ft) aboorption width: 2 Calc. length of each leach line (ft),total of 3: 78.3 <br /> 5idewall aboorption height(ft): 0.5 Required flow(gal/day) per pit,total of 3: 0.0 <br /> Factor of Safety: 1.5 Recommended minimum seepage pit diameter. 42-in <br /> Recommendation: <br /> 3 Leach Lines, 95-ft Each With 3 5eepage Pits of 42-in Diameter. <br /> VARIABLE5 AND TERM.• <br /> gal =gallons. <br /> gpd/6f=gallone per day per Square foot. <br /> ft=feet. <br /> in = inch. <br /> PR= Percolation Rate (min/in) of Shallow boil. <br /> SLR= Sewage Loading Rate (gpd/sf) of Shallow Soil. <br /> TL =Total Length (ft) of trench required. <br /> Qff= Leach Field Flow(GPD). <br /> A5 =Absorption Surface per linear foot of trench (ft). <br /> TB =Trench bottom absorption width (ft). <br /> 5WH = 5ide wall absorption height(ft). <br /> EQUATIONS: <br /> (see Note No.1) 51-R= 5/ (PR)^0.5 <br /> A5=T13 + (2x5WH) <br /> TL =W5LR/A5 <br /> CA CU ATIONS: <br /> (5ee Note No. 1) 51-R: 0.447-gpd/rf= 5/(125-min/in)^0.5 <br /> A5: 3-ft= 2-ft+ (2 x 0.5-ft) <br /> TL: 234.8-ft=315-13pd/0.447-gpd/5f/3-ft <br /> Note No.1--U5 Dept of Health.Frlucation,and Welfare,revieed 1967, <br /> Manual of Septic Tank Practice: Publication No.526,vee Figure 19,Page 47. <br /> 'v A soma <br /> NEIL O.ANDERSON&ASSOC., INC. <br /> MOM MNCAL SERNCES-ENGINEERNG LABONATOMES 2 W <br /> 1 w <br /> I Iltol LnLldI,CA SMAD O �• <br /> R®).' . 4SS <br /> 5HEET1 <br />