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l~lJl\llJl.JAl::,L\'\>,H,I ll{L/\IMLl"il ::,\::,ILM VvUl{r-.::,liLLI <br />'A <br />B. <br />l·:stimah'd <br />FLOW <br />/:5()_ __ . gpd <br />nwasured x ···--·-----·· gpd <br />SEPTIC TANK VOLUME <br />_____ :;La.. 13c!) gallons <br />SOILS (Site evaluation data) <br />C Depth to restricting layer= ':i,l______ __ feet <br />D. Maximum depth of system C -3 ft = I,\ feet <br />E. Texture Joev-'.) Percolation rate~-MP! <br />F. SSF )iil._ sq ft/ gpd <br />TRENCH BOTTOM AREA <br />H. For trenches with 6 inches of rock below the pipe: <br />A x F = __ x __ = __ sq ft of bottom area <br />I. For trenches with 12 inches of rock below the pipe: <br />A x F x 0.8 = __ x __ x 0.8 = __ sq ft of bottom area <br />J. For trenches with 18 inches of rock below the pipe: <br />A x F x 0.66 = __ x __ x 0.66 = __ sq ft of bottom area <br />K. For trenches with 24 inches of rock below the pipe: <br />A x F x 0.6 = __ x __ x 0.6 = __ sq ft of bottom area <br />BED BOTTOM AREA <br />L. For Gravity beds with 6 or 12 inches of rock below the pipe; <br />r.s x A x F = 1.5 x --x --= --sq ft of bottom area <br />For Pressure beds with 6 or 12 inches of rock below the pipe; <br />Ax F = __ x __ = __ sq ft of bottom area <br />ROCK VOLUME IN CU FT <br />M. Rock depth below distribution pipe plus 0.5 foot times bottom area: <br />M =Rock depth+. 6 inches x Area (H,I,J,L,K) <br />+ 05ft) x ___ = __ cu ft <br />ROCK VOLUME IN CU YDS <br />N. Volume in cu ft divided by 27 <br />M + 27 = cu yds _ + 27 = __ cu yds <br />ROCK WEIGHT <br />0. Cubic yards times 1.4 = tons <br />N x 1.4 = tons __ x 1.4 = __ tons <br />DISTRIBUTION <br />(Check one based on slope) __ Bed(< 6% slope) <br />Trenches __ Drop boxes (any slope) __ Distribution box ( < 3%) <br />SYSTEM LENGTH <br />P. Select width = ft <br />Q. Divide bottom area by width: (H, I, J, or K) + P = lineal feet <br />~+!El=_ lineal feet <br />Gravelless Pipe <br />( 10" :Ax F + 3)= Lineal Feet ( 8" :Ax F + 2)= Lineal Feet <br />Chamber (Ax F + width of chamber) <br />15c xlJQ_ + -2._= ~lineal feet <br />LAWN AREA <br />R. Select trench spacing, center to center = ___ feet <br />S. Multiply trench spacing by lineal feet Rx Q = sg ft of lav,m area <br />··--X __ = ___ ·-sq ft <br />LAYOUT (Use other sidl') <br />1. Select an appropriate scale; one square = ______ fe<'L <br />2. Show pertinent property boundaries, right-of-way, easeincnh. <br />3. Show location of house, garage, drivewav, and all other <br />improvements, existing or proposed <br />4. Show location and layout of sewage lreatnwnt system. <br />5. Show location of water supply well. <br />6. Dimension all set backs and separation distances. <br />I <br />6 <br />·-~~~~l~d ~~w-1,:ic Hnw 111 ~~~11_,~!~~!~cr Day (gr<J) <br />Numhrt <br />of Type I <br />Ucdroorn, <br />Typ,· 11 'f)'Jw Ill Type IV <br />2 JOO 21.') 180 "°" J 450 _l!XJ 218 nl <br />4 600 J7'i 256 1hr <br />'i 750 450 294 nJuC:.\ <br />•n 6 900 'i2'i 132 the <br />7 IO'iO 600 370 other <br />X 1200 67'i 408 column, <br />Nurnhcr Minimum Minimum <br />Septic Tant Capacily with of Liquid Garbage <br />Bedrooms Capacity Disposal <br />(gallons) (gallons) <br />2 or less 750 l,125 <br />3 or 4 1,000 1.500 <br />5 or6 1,500 2,250 <br />7 or 8 2,000 3,000 <br />ovcr9 See fig. C-6 (x 1.5) <br />Soil CharMtt:ri~lic!< & Rt'quin._,i A~.1~ ft1r St!wait.' Tn-atmt.'nt <br />Pern,latllln R,1h• Squ.ir.-fnct ~U.1n, <br />Soil Texture ~ti.;.U. .... re-rd~\· Minul~ pt'l Jll{h f"<"IJ~r p,rrt.tu.in- <br />(mpi) ·~· <br />Faster than 0.1' Coarse Sand ----- <br />0.1 toS Sand 0.83 1.20 <br />0.1 toS Fine Sand•• 1.67 0.60 <br />6 to IS Sandy Loam 1,27 0.79 <br />16 to 30 Loam 1.67 0.60 <br />31 to 45 Silt Loam· 2.00 0.50 <br />461060 ClatLoam 210 0.45 <br />Slower than 60" .. lay -(0.24) <br />• Soil too coarse for sewage treatment. <br />USt! systems for rapidly ~able soils. <br />-Soil having SQ'}'., or more of fine or very fine sand. <br />-• Soil with tl.Xl hig~ a percentage of day for <br />installation of an mgmund standard sy:.1em.