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<br /> FLOW Lc.74 / Estimated Sewage Flow in Ballon her Das (gpd)
<br /> A. Estimated 75C) gpd Number - -
<br /> measured __x _ ----__---gpd of Type I Type II Type III Type Iv
<br /> SEPTIC TANK VOLUME Bedrooms
<br /> 2 300 225 180
<br /> 13. _:-e %Oo gallons 3 450 300 218 M"
<br /> 4 600 375 256 die
<br /> 5 750 450 294 "nuc
<br /> 111
<br /> SOILS (Site evaluation data) 6 900 525 332
<br /> 7 1050 6()0 370 .4h"
<br /> C. Depth to restricting layer= 'YO feet 8 1200 675 408
<br /> D. Maximum de th of system C-3 ft = A 0 feet
<br /> L. Texture Percolation rate/S'-/9 MPI Number Minimum Minimum
<br /> F. SSF 1.61 sq ft/gpd Septic Tank Capacity with
<br /> Of Liquid Garbage
<br /> Bedrooms Capacity Disposal
<br /> TRENCH BOTTOM AREA (gallons) (gallons)
<br /> H. For trenches with 6 inches of rock below the pipe: 2 or less 750 1.125
<br /> A x F= x = sq ft of bottom area 3 or 4 1.000 1,500
<br /> I. For trenches with 12 inches of rock below the pipe: 7 or 8 2,000 3,000
<br /> 7 or 8 2,0(X) 3,000
<br /> A x F x 0.8= x x 0.8= sq ft of bottom area over 9 See fig.C-6 (x 1.5)
<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 soil Charanenstics k Requrrwt Area,hit St,age Ireatnn.ni
<br /> K. For trenches with 24 inches of rock below the pipe: Percolation Rate �•'• cru...
<br /> Minutes per inch JOa Texture l r;," 4-4,;;,
<br /> A x F x 0.6= x x 0.6 = sq ft of bottom area (mpi) ,
<br /> BED BOTTOM AREA Faster than 0.1* Coarse Sand
<br /> 0.1 to 5Sand 083 1.20
<br /> L. For Gravity beds with 6 or 12 inches of rock below the pipe; 0.1 to 5 Fine Sand** 1.67 0.60
<br /> 6 to 15 Sandy Loam 1.27 0.79
<br /> 1.5 x A x F= 1.5 x x = sq ft of bottom area 16 to 30 Loam 1.67 0.60
<br /> For Pressure beds with 6 or 12 inches of rock below the pipe; 31 to 45 Silt Loam 2.00 0.50l�P 46 to 60 Clay Loam 2.20 0.45
<br /> A x F= x = sq ft of bottom area Slower than 60••• Clay (0.24)
<br /> ROCK VOLUME IN CU FT •soi too coarse for sewage treat men!
<br /> Use systems for rapidly permiable soil,.
<br /> M. Rock depth below distribution pipe plus 0.5 foot times bottom area: --Soil baying so•>:,or more of or very tine sand
<br /> M=Rock depth+6 inches x Area(H,I,J,L,K) -'snit with fan in roandpercendrrlayfor
<br /> installation of an in round standard system.
<br /> ( +0.5 ft)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 6 inches= 0% Reduction*
<br /> • ROCK WEIGHT
<br /> O. Cubic yards times 1.4= tons 121nCheS= 20% Reduction
<br /> N x 1.4=tons x 1.4= tons 18 uncles=.34%D Reduction
<br /> 24 niches=40% Reduction
<br /> DISTRIBUTION •*:sizing for graveness trench
<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 ti....ti.;•ti.%.%•%.ti•ti.ti.S.%.ti.ti T
<br /> r•r•r•r.r•r•r•r•r•r•r•r•r•r•r•,
<br /> Q. Divide bottom area by width: (H,I,J,or K)+P=lineal feet jtif sisisiftftf sing ss-istifti 2 mchCover
<br /> ti•ti•L•ti•1•ti•ti•ti•ti•ti•ti•ti•1•ti•1
<br /> _W_ 'r•r'r•r 141.;"'r•r'r•r•:1M.r't
<br /> jr
<br /> l�- lineal feet ti•ti•1•ti•1•ti• •ti•ti•L•ti•1•ti•ti
<br /> 'r•r•r•r•r•r •�•r•r•r•r•
<br /> Gravelless Pipe ~•~'�• %-%.%•ti•ti
<br /> 'r•r•r•r•r r•r•r•r•
<br /> ti•ti•ti•ti• �•ti.ti•ti•ti
<br /> • •r•r•r• r•r•r•r•,
<br /> ( 10" :A x F-3)=Lineal Feet(8" :A x F-2)= Lineal Feet rr:}:f Si' ti};•�•ti•ti 4 mchPike
<br /> r•r-•%'
<br /> L•ti•ti•ti• ti•ti.ti•ti•ti
<br /> Chamber(A x F+width of chamber) ".........e...0 ;•r•r•r•r•,
<br /> ti.ti•ti•ti.ti ti.ti•ti•ti•ti
<br /> •r•r•r•r•r• r•r•l•r•r•,
<br /> •1 L•ti•ti•ti•t•S• L•ti•ti.ti•ti-t
<br /> •r•r•r•r•r•r•r•r•f•r•a•?..5 r•i
<br /> 7�_x/.67 - -_ lineal feet ti•ti•ti•ti•ti.•..."•ti•....e• ti• ...
<br /> LAWN AREA 'r•r•r•r•r•r•r-r•r•r-r•r•r.r•r•,
<br /> it:f:1:f:11.f:f~f:%:fV~f~fyr~f:
<br /> ****1 '1.•t•t•t., ti•L.ti•ti•ti•ti•ti
<br /> 'f•r•r•r.r•r•r•r•r•r•r•r•r•;,. 6,24 irwh
<br /> R Select trench spacing, center to center= 5_ feet ti'�'�'ti'�'�'~'`'~'''~'`'''�'�
<br /> r•r•r•r-r•r•r•r•r-r•r•r•r•r•r•,
<br /> ti• a-0- ti•ti• ..,e- ti••.•ti•ti•ti-'Rock Below the Pi,
<br /> 'r•rvr•r•r•r•r•r•r•r•r•r•r-:-'
<br /> Multiply trench spacing by lineal feet R x Q = sq ft of lawn area '•%.%•%•%•%•%•%•%-%.%•,•,•%•%•%
<br /> --.-. x S_.. = Go sq ft rti•.eti."•ti,•1•r•tir•••r•-•r••,rti•r•ti-r•titi•r•ti•:•ti-r•tti•r•-•,
<br /> tir1:11:= rr:rtirtirti•rtir•rr•r-r-
<br /> ,
<br /> t••.•ti•ti•ti::::*1•ti•ti•ti•ti•�•ti••-
<br /> LAYOUT(Use other side) r•rr•r•l•r•r•r•r•r•r•r•r••-.-
<br /> 1. Select an appropriate scale;one square=.__--_ feet.
<br /> 2.Show pertinent property boundaries,right-of-way,easements.
<br /> 3. Show location of house,garage,driveway, and all other
<br /> improvements, existing or proposed
<br /> 4. Show location and layout of sewage treatment system.
<br /> 5.Show location of water supply well.
<br /> 6. Dimension all set backs and separation distances.
<br />
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