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tNl)t II)UAL SIANA ..t_ I l<LA IN/WIN t :"11I L.N1 1'\l)t i‘1t1t.1. 1
<br /> FLOW Estimated Sewake Flow in Gallons per Day(gN)
<br /> A. Estimated gpd Lpf Numtx•t
<br /> 3 -'--
<br /> ---
<br /> measured x = - gpd or -rype I type II Type III Type IV
<br /> Bedrooms
<br /> SEPTIC TANK VOLUME D/,/7)1 C*1‘i ,a) „5 Iso
<br /> 3 450 100 218 radA
<br /> B. a gallons / n a�� q 600 175 256 a"�
<br /> �/(/' S 75(1 450 294
<br /> 6 900 525 332 0,r
<br /> SOILS (Site evaluation data) 7 loco 6(0 370 "^'
<br /> C. Depth to restricting layer= 4./•1 _-- __. feet 8 12(X) 675 408 ""°""'
<br /> D. Maximum depth of system C-3 ft = 4/ feet
<br /> E. Texture 5� t�
<br /> riot , Percolation rate IS-Z1 MPI
<br /> NUmhcr Minimum Minimum
<br /> F. SSF /.6 sq ft/gpd
<br /> Sepuc Tank Capacity with
<br /> 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: 5 or 6 1,500 2,250
<br /> 7 ors 2,000 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 std ch...,,,,,,,,,At Required Areas ittr Sewage 1rea,mem
<br /> K. ywr.t^' GIFm
<br /> For trenches with 24 inches of rock below the pipe: Percolation Rate Minutes per In $oil Texture ;" r..174::„.
<br /> A x F x 0.6 = x x 0.6= sq ft of bottom area tmpil
<br /> BED BOTTOM AREA faster than 0.1' Coarse Sand
<br /> 0.1 to 5 Sand 0.83 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 0.50
<br /> P P 46 to 60 Clay Loam 2.20 0.45
<br /> A x F= x = sq ft of bottom area Slower than 60••• day (0.24)
<br /> ROCKVOLUME IN CU FT •k,i,,..,coarse for sewage treatment
<br /> list.systems for rapidly permiable soils.
<br /> M. Rock depth below distribution pipe plus 0.5 foot times bottom area: ••Soil hating sm..or more or fine or very fine sand
<br /> "'Soil with tow high a percentage of day(or
<br /> M=Rock depth+6 inches x Area(H,I,J,L,K) insWtali.m of an ingnwnd 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 12 inches=20% Reduction
<br /> O. Cubic yards times 1.4=tons
<br /> N x 1.4=tons x 1.4 tons 18 inches=:34%,u:=Reduction
<br /> 24 inches=40%•Reduction
<br /> DISTRIBUTION *sizing for gratvelless 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•ti•ti•�•ti•ti•ti•ti•ti•ti -T-
<br /> rl•r•r•r•r•r•r•r•rM•r•r-r•r•r•, 1
<br /> Q. ti'S•ti•ti'ti•1.i.94•ti•ti•ti•t•ti•••
<br /> Divide bottom area by width: (H,I,J, or K)- P=lineal feet `f•r•r•r•r•r.r•r-r•r•r•r•r•r-r•, 2 jt_iachCouer
<br /> . ti•ti•ti•ti•ti•ti•ti ti.ti.ti.ti.ti.ti.ti.ti
<br /> lineal feet ft=tiftiftif 5:::.e•:ti:•rir•r•r'r''
<br /> ti•1•ti•ti•t.ti
<br /> �f•r•r.r.r-r .•%•%• •%•%
<br /> Gravelless Pipe '`"`"''"t"�
<br /> rrti:tirtirtir. <r.r.r.r.
<br /> ti•ti.ti•ti
<br /> •f•r•r•r- r.r.r.r.
<br /> ( 10" :A x F-3)= Lineal Feet(8" :A x F-2)= Lineal Feet •::f}f:f:' ;};•�•�•� 4 mchPipe
<br /> l•r•r•,
<br /> 'f'r'e'e'r r~rtil�f~r:,
<br /> Chamber(A x F_width of chamber) ti•ti•ti•Z•ti
<br /> q.4.:411.411.:.,.. d•r•r-r•r-
<br /> titi1,titi•ti.ti.ti•ti•ti
<br /> 7� x/67 - 3 =Wit., lineal feet '}•r-r-r•r•r•r•r r.J.r-r•r•r•r•
<br /> r•r•r•r•r•r•r•r•r•r•r•r•r•r•r•,
<br /> LAWN AREA •r1r:r~r:r,r~r~r~r'%r~r%r41~r:r:,
<br /> R. Select trench spacing,center to center -- __ _- err-e•r•e•r•r•e•r•r-e-e•r•r•r•r•,
<br /> - •r• •r-r• •r-r• •r•r•r-r-r•. 6-24 ixol,
<br /> S. Multiply trench spacing bylineal feet R Q - • 1' ~~•11:-*•Z.Z ti•ti•ti
<br /> r:***I tirti f�rtirtif::,-;.ti ftirtirti Rock Se Ltw tLe pi,
<br /> .�{ It clt lawn area f.r•r:r•r•r•i•i•r•r•r•r•i•r-r•.
<br /> VAC__ x ., _. _ 20 it ,r r�.f,ftif f{f{ftf{ftif1ftiftif%f•:
<br /> '1.f.r.r.r.r.r.r.r.r.r.r.r.r.r.
<br /> LAYOUT(Use other side)
<br /> •'~r;r-:r�r�r~r~r~r~rtr'r~r�r 't
<br /> �•
<br /> 1. Select an appropriate scale;one square - _ _ feet.
<br /> 2. Show pertinent property boundaries, right-ot-way,casements.
<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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