|
I i\. I > I \ I UL; AL ~ L \iv AGL I I{ Lt\ I M LI'< l ~ \ ~ i UVl V\, Uh. h. :-, l l LL l
<br />' ,\
<br />B
<br />(
<br />!J.
<br />E.
<br />F.
<br />FLOW
<br />Fstunated __ J__~_ . gpd
<br />measured ____ x -······---,= -··---gpd
<br />SEPTIC TANK VOLUME
<br />~ e., i3t!>O gallons
<br />SOILS (Sill' evaluation data}.
<br />Depth to restricting layer= ___ __'i~~':L_Q__ feet
<br />Maximum depth of system C -3 ft = \ 7...'' /.() fl'l'l
<br />Texture ;fe~ri lo'lltl Percolation rate B ~ 2'; MP!
<br />SSF h12_ sq t/ gpd
<br />TRENCH BOTTOM AREA
<br />z
<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 />Ax 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 yravity beds with 6 or 12 inches of rock below the pipe;
<br />1.5 x Ax 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 Ff
<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 />( __ + 0.5 ft) X __ = __ CU ft
<br />. ROCK VOLUME IN CU YDS
<br />N< "--volume in cu ft divided by 27
<br />0.
<br />p
<br />Q.
<br />R.
<br />s
<br />M + 27 cu yds + 27 = __ cu yds
<br />ROCK WEIGHT
<br />Cubic yards times 1.4 = tons
<br />N x 1.4 = tons X 1.4 =
<br />DISTRIBUTION
<br />tons
<br />(Chec]s..one based on slope) __ Bed(< 6% slope)
<br />Trenches _V_D Drop boxes (any slope) __ Distribution box(< 3%)
<br />SYSTEM LENGTH
<br />Select width= ft
<br />Divide bottom area by width: (H, I, J, or K) + P = lineal feet
<br />= 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 />]!i;Lx I.Z.7 +~=~lineal feet
<br />LAWN AREA
<br />Select trench spacing, center to center= S-feet
<br />Multiply trench spacing by lineal feet Rx Q = sq ft of lawn area
<br />____ X __ = JS'j[) sq ft
<br />LAYOUT (Use other side)
<br />1. Select an appropriak sc;1le; one square=~---f(,(•I
<br />2. Show pertinent prnpt'rly boundaries, right-of-way, l'3Sl'll1L'nh.
<br />1. Show location of housL', garage, driveway, and all other
<br />improvements, existing or proposed
<br />4. Show location and layout of se\•vage treatment systvin
<br />5. Show location of water supply well.
<br />6. Dimension all set backs and separation distances.
<br />_ -~~~~~~!-~r~_Srwagt~_t:·!~_,w in -~~alh,n_~-~-~~!!.av {gr<J)
<br />Numlw,
<br />of Type I Type II Type 111 Type I\' Bedrooms
<br />2 300 12.'l 180 t-,(11,i 1 450 JOO 218 .. ,
<br />4 6()() J75 256 the
<br />5 750 450 294 \'~uo.
<br />in 6 9()() .~2~ 1J2 lhl'
<br />7 1050 (,()() 17() olhC'r
<br />8 1200 67~ ·IOX
<br />(·,,tunu1,
<br />Number Minimum Minimum
<br />Scptir Tanl-Capacity with of l.1qu1d Garbage
<br />Bedrooms Capac 11, Disposal
<br />()!allon!-) (gallons)
<br />2 or less 750 1.125
<br />3 or4 1.000 1.500
<br />5 or6 1.500 2.250
<br />7 or 8 2,000 3,000
<br />over9 Sec fig. C-6 (X 1.5)
<br />Soil Charo1ctcrislic~ & Ht;>,1u1n-..i An•,\~ 1t,r ~•w.tit• Treatment
<br />Pt.>rcola110n R..-l!t> 5-quJ.r.-lncl ~IS..n,
<br />St,il Te)._ture r,.-1,:_.;l\,,n ,..-,d.io}' Minuit.>:. per inch , .... fJ.l\ l'<'ri-qu;,,,...
<br />(mp;l ltt•
<br />Faster than 0.1 • ~oarse Sand ----------
<br />0.1 toS Sand 0.83 1.20
<br />0.1 toS Fine Sand"" 1.67 0.60
<br />6 to 15 r,andyLoam 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 2.20 0.45
<br />Slower than 60* .. la)' ----(0.24)
<br />• Soil too c~ for Sl'wagt: tn~atment. u~ systems for rapidly pcr~tiable soils.
<br />•• Soil having 50'}'., or mort' of hnc or \'ery fine sand.
<br />,... Soil wilh tou high a percentage o( clay for
<br />installation of an ingnmnd standard system.
|