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I j',, I J I \ I 1. J l-' , \ l , :-, I \ \ , \ I.. , I I I 'I. I 1 \ I 1 \ l 1 .. , '-1 , I : ~ I I , \ I \ \ , I I\. 1, '1 I I I I 1
<br />)5(.;)
<br />FLOW
<br />gpd
<br />111l'ilSlHl'd X ----gpd
<br />k-fl
<br />SEPTIC TANK VOLUMF
<br />B. --~ /?Oc,) gallons
<br />C.
<br />D.
<br />E.
<br />F.
<br />SOILS (Site evaluation data)
<br />Depth to restricting layer=___ 'f._O __
<br />Maximum depth of system C -3 ft = __ j._ ().
<br />Texture~.k, e ".'\ Percolation rail' _l_'(_-t_j
<br />SSF U"2 sq ft/ gpd
<br />TRENCH BOTTOM AREA
<br />f<'('(
<br />feet
<br />MP!
<br />H. For trenches with 6 inches of rock belov,, the pipe:
<br />A x F = __ x ___ = __ sq ft of bottom area
<br />I. For trenches with 12 inches of rock below the pip<':
<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 Gravity beds with 6 or 12 inches of rock below the pipe;
<br />1.5 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 />A x F = __ x __ = __ sq ft of bottom area
<br />ROCK VOLUME IN CU Ff
<br />M. Rock depth below distribution pipe plus 05 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 />M + 27 = cu yds _ + 27 = __ cu yds
<br />ROCK WEIGHT
<br />Cubic yards times 1.4 = tons
<br />N x 1.4 = tons xl.4=
<br />DISTRIBUTION
<br />tons
<br />(Check one based on slope) __ Bed(< 6% slope)
<br />Trenches V"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 />..._+_=_lineal feet
<br />Gravelless Pipe
<br />( 10" :A x F + 3)= Lineal Feet ( 8" :A x F + 2)= Lineal Feet
<br />Chamber (Ax F + width of chamber)
<br />"lSc:..> x f,'L'1+ ~= ~lineal feet
<br />LAWN AREA
<br />R. Select trench spacing, center to center = ~ fed
<br />S. Multiply trench spacing by lineal feet Rx Q = sg ft of lavm area
<br />~x~ /S?Qsqft
<br />LAYOUT (Use other side)
<br />J. Select an appropriate scale; one square = . ________ feet.
<br />2. Shov,, pertinent property boundaries, right-of-way, easements.
<br />3. Show location of house, garage, drivewav, ,md all other
<br />improvements, existing or proposC'd
<br />-1. Show location and layout of sewagt• I r<'atnwnt ½\'St<'m
<br />5. Show location of water supply vvell
<br />6. Dinwnsinn all set backs and separation d1st.i11< ,,~
<br />~ "i_ma1i:d \t·,,•,tt•c I ltm 111 (;allnn~ pn I?''' ,~pd!
<br />Numlw,
<br />of rvp<' t Type If Typ<' Ill Typ,· IV
<br />llcd100111,
<br />1(XJ 225 180 Nl'i
<br />1 450 l(Xl 218 "' 4 600 .l75 25<, thl·
<br />5 750 450 294 \'.thll'-'
<br />"' <, 900 525 112 lhl'
<br />7 1050 6lXl .170 lllhn
<br />n1fu111n~ 8 1200 675 408
<br />Numhcr Minimum Minimum
<br />Septic Tank Capaci1y \\'ith of Liquid Garbage-
<br />Bcdroo,m Capacity Disp<.1sal
<br />(~aflons l traflonsl
<br />2 or lcs~ 750 1.125
<br />3 or--1 1.000 1,500
<br />5 or 6 J.500 2,250
<br />7 or 8 2,000 3,000
<br />over 9 Sec fig. C-6 (X J.5)
<br />~\II Ch,ni'lrtt'rtSl1n, &. Requm,,'\1 An•,1~ ltlt St.-w.-\~t• ln·,.\lnwnl
<br />!'t•r(1ll<11Hlll Ri!lt' ~U.lh·k.-1 t:..U,,n,
<br />Soil Texture , ..... , ,. .. 11 .... , I'<' d,1~ Mmult.-:-Jl<..'J m(h f'<'ld.>.\ J"rf~<l.ln·
<br />(mpi) ·-·
<br />faster than 0.J• ;~oarse Sand ----------
<br />0.1 to5 Sand 0.83 1.20
<br />0.1 toS Fine Sand .. 1.67 0.60
<br />6 to 15 pandyLoam 1.27 0.79
<br />16 to 30 Loam 1.67 0.60
<br />31 to 45 Silt Loam· 2.00 0.50
<br />46 to 60 ClatLoam 2.20 0.45
<br />Slower than 60 ... lay ---(0.24)
<br />• Soil too coarse for sewagf:!: treatment.
<br />U:.e systems for rapidly penniable suils.
<br />-Soil having 50% or more of fine or \'ery fin~ sand .
<br />... Soil with too high a percentage or day for
<br />installation of an ingn1und standard sy~-tem.
<br />T
<br />2 m:hCover t 'f Pip,
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