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`Y5TEM CALCULATIONS PARCE,. <br /> INPUT: RESI)I-T: <br /> Est. pert. rate (min/in) of Shallow coil: 250 Total calculated flow(gals/day): 375 <br /> PerSomo, maximum: 5 Total Flow O with 1 factor of Safety(gal6/day): 375 <br /> Gallono per person per day: 75 Flow Of(gals)to leach line (100%of Total Flow): 375.0 <br /> DeSired Leach Liner,: 4 Flow(gals)to Seepage pits (0%of Total Flow): 0.0 <br /> Deoired Pith: 4 Length of leach line (ft)for 100%of total flow: 395.3 <br /> 5yotem Flow% in Leach Line: 100.0% Sewage app. rate,leach line (gpd/sf): 0.316 <br /> Trench bottom (ft) a79orption width: 2 Calc. length of each leach line (ft),total of 4: 96.8 <br /> 5idewall absorption height(ft): 0.5 Required flow(gal/day) per pit,total of 4: 0.0 <br /> Factor of Safety: 1 Recommended minimum Seepage pit diameter. 42-in <br /> Minimum Recommendation• <br /> 4 Leach Lines, 100-ft Each With 4 Seepage Pito of 42-in Diameter. <br /> VARIADI F5 AND T RMS• <br /> gal =gallons. <br /> gpd/5f=gallons per day per Square foot. <br /> ft—fvat <br /> in = inch. <br /> PR= Percolation Rate (min/in) of Shallow Soil. <br /> 51-R= Sewage Loading Rate (gpd/5f) of Shallow Soil. <br /> TL =Total Length (ft)of trench required. <br /> Qff= Leach Field Flow(GPD). <br /> AS =Absorption Surface per lineal foot of trench (ft). <br /> TB= Trench bottom abr,orption width (ft). <br /> 5WH = Side wall absorption height(ft). <br /> EQUATIONS: <br /> (See Note No. 1) 51-R=5/(PR)^0.5 <br /> AS = TB + (2 x SWH) <br /> TL = 0K/5LR/A5 <br /> A ATION5- <br /> (See Note No.1) 5LR: 0.316-gpd/5f=5/(250-min/in)^0.5 <br /> A5: 3-ft= 2-ft+ (2 x 0.5-ft) <br /> TL: 395.3-ft= 375-gpd /0.316-gpd/6f/3-ft <br /> Note No.1--U5 Dept of Health,Education,and Welfare,revived 1967. <br /> Manual of Septic Tank Practice: Publication No.526,see Figure 19,Page 47. <br /> C, ,' <br /> NEIL O.ANDERSON&ASSOC.,INC. <br /> (EOWORNCI SWMCES-H ]N®NG LABOMTORM=WusbnLn.LO i,CA 040 <br /> SHEET <br />