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I 1"-1 I >I\, 11 J LJ/\ I, :-, L \r\, J\ I.., l I I{ LA l M Li"-I :-, \ :-, I 1.1\ I \ \ '-J ht,::, 11 LL I
<br />B.
<br />C
<br />D.
<br />F
<br />F
<br />Est1maf<"d _]S(::} . _
<br />FLOW
<br />gpd
<br />-·· ___ x _____ gpd
<br />SEPTIC TANK VOLUME
<br />··--·--·--------gallons
<br />SOILS (Site evaluation data)
<br />Depth to restricting layer= C? !::L_L fed
<br />Lof 3
<br />Maximum depth of system C -3 ft = __ J_~_L _____ feet
<br />Texture SetJ\f~ Percolation ratP 1S"-t..j _ MP!
<br />SSF (..LZ:l sq d;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 />LS 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 0.5 foot times bottom area:
<br />M =Rock depth+ 6 inches x Area (H,I,J,L,K)
<br />( __ + 05 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 X 1.4 =
<br />DISTRIBUTION
<br />tons
<br />(Check one based on slope) __ Bed ( < 6% slope)
<br />Trenches VDrop 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" :Ax F + 2)= Lineal Feet
<br />Chamber (Ax F + width of chamber)
<br />7:3,Q_x ,.z7 + L=3'h,lineal feet
<br />LAWN AREA
<br />R. Select trench spacing, center to center= ~-. fcL'I
<br />S. Multiply trench spacing by lineal feet Rx Q = sq ft ul Liwn area
<br />~x ~=~Qsqft
<br />LAYOUT (Use other side)
<br />1. Select an appropriate scale; one square=------f,,,,1
<br />2. Show pertinent property boundaries, right-of-way, ,-.1o,emcnts.
<br />:l. Show location of house, garage, drive\,vay, anrl ,ill otl1,•1
<br />improvements, existing or proposed
<br />4. Shmv location and layout of sevvage trealm<'nt system.
<br />5. Shmv location of water supply well.
<br />6. Dimension all set backs and separation distances.
<br />_Y-~•-~~1~~1nl -'"rwarr Ho\\' m_ (iallc_~~~-~~r Day (gpd)
<br />N11mlw1
<br />of Typ<' I Type II Typ<' 111 Type IV lfrdroom~ ---··-
<br />:!:?~ 2 100 180 «1-. 1 4'i0 100 218 uf
<br />4 6(Xl .17'i 2.'i<, lh,
<br />5 750 4.'iO 294 V.tlUC!,
<br /><, 'XXI 'i2'i 112 Ill
<br />lhc
<br />7 1()50 h(Xl 170 othct
<br />H 1200 t,7\ 408 nllunu\,.
<br />Number Minimum Minimum
<br />Septic Tank Capacit\' wilh or Liquid Garbage
<br />Bedrooms Capacity Disposal (gallons) (gallons)
<br />2 or less 750 1.125
<br />3 or 4 1,000 1,500
<br />5 or6 1.500 2,250
<br />7 or 8 2,000 3,000
<br />over 9 Sec fig. C-6 (X 1.5)
<br />S..11! Char.l(1~•n:.11cs & Rt'quin.,i A~a~ h,r St.-\\'.l~t> Tn.>.:tlntl..'nl
<br />Pt'rcolatum RAh' 5iwr.,-1n-1 Wll,in.,
<br />Soil Texture f"<"lt,.ilkn ["<"Id~,· Minuit•:. p..'I md1 , ... ,J::i, r,,-1~~ ...
<br />(mp1) ·-
<br />Faster than 0.J• :=oarse Sand ------
<br />0.1 to 5 Sand 0.83 1.20
<br />0.1 to 5 Fine Sand .. 1.67 0.60
<br />6 to 15 Sandy Loam L27 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 loo coarse for sewage treatment.
<br />USt! syst~ms for rapidly pe~ablc soils ..
<br />.. Soil having SO-X. or more of (me ur very (me sand .
<br />... Soil with too high a percentage o( day for
<br />installation o( an inground standard system.
<br />T
<br />2 ir,; h Cow,r t
<br />4 in.ch.Pipe
<br />t
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