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t Ckow / G�UF 50
<br /> TR NCH AND BED WORKSHEET ota rm
<br /> 1. AVERAGE DESIGN FLOW SswAGs
<br /> d i re A-1) C 34 P o�R"
<br /> A. Estimated '`�Jr-G $p (seef 8�'
<br /> or measured_x 1_5 (safety) __gpd
<br /> B. Septic tank capacity gal (see figure C-1) A•1: Estimated Sewage Flows In Gallons per Day
<br /> 2. SOILS (Site evaluation data) —number o
<br /> bedrooms Class I Class II Class III Class IV
<br /> C. Depth to restrict. layer = ft 225 180 60
<br /> D. Max depth of system 450 300 218 Gr the
<br /> P y
<br /> 4 600 375 256 values
<br /> Item 2C - 3 ft = ft - 3 ft = ft 5 750 450 294 in the
<br /> 6 900 525 332 Class I,
<br /> E. Texture /—[; g4 M 7 1050 600 370 II,or III
<br /> Percolation rate_3_L-_ MPI 8 1200 675 408 columns.
<br /> F. Soil Sizing Factor (SSF) ,d sqft/gpd (see figure D-15)
<br /> C•1: Se tic Tank Ca acltles Ingallons)
<br /> G. % Land Slope % Ligwd capacity
<br /> 3. TRENCH or BED BOTTOM AREA Number of Minimum Liquid garb caparity With witli dinside 8
<br /> Bedrooms Capaci garbage disposal lift inside
<br /> H. For trenches with 6 inches of rock 2 or lass 750 1125 1500
<br /> A x F = bpd x sgft/gpd = sgft. s o�4s ;°so00o 2250 3000
<br /> 7.8 or 9 2000 3000
<br /> 3000
<br /> '000 1
<br /> I. For trenches with 12 inches of rock
<br /> A x F x 0.8 = °a,
<br /> -gpd x sgft/gpd x 0.8 = sgft So,C—.a•�a,ua.neso-
<br /> 3.
<br /> •r .,�,,,
<br /> J. For trenches with 18 inches of rock
<br /> A x F x 0.66 = -bpd x sgft/gpd x 0.66 = sgft
<br /> K. For trenches with 24 inches of rock "3" �•
<br /> gpd x sqft/gpd x 0.6 = sgft
<br /> AxFxU.6 = �n•° y.�r. y
<br /> L. For gravity beds with 6 or 12 inches of rock below the pipe;
<br /> sgft. •..,e°F- ��.,
<br /> ,d.r,rn,aa-
<br /> 1.5 x A x F = 1.5 x gpd x _sgft/gpd = �.� , ...�..•".�. '
<br /> v,fw.•v.YCuon v,wW Ouuruvn.,,n
<br /> K For pressure beds with 6 or 12 inches of rock below the pipe; xr•�:•::�
<br /> A x F =1/S-0 gpd x�.ocsgft/gpd sqft -Geotexwx Fabric
<br /> 4. DISTRIBUTION (Check all that appy) °::o: ~a a• .AaPr.=' t kak C0r61
<br /> K Bed ( Rock
<br /> 6% slope) Drop bQxes (any slope)
<br /> .b;A°� 14'Dist.PiGe
<br /> Trenches Distribution box (< A) Chamber
<br /> k Presgijre ! •5"Pt Gravity Gravelless g.'s•
<br /> o4bo;o::d
<br /> 5. SYSTEM WIDTH, L GTH and VOLUME 4p':vo:vFAa:oe:oao:::.9./
<br /> 6-24" Rock
<br /> M. Select trench width = ft
<br /> d,=dov, a 3/4-2 1/2'
<br /> N. If using rock, divide bottom area by width:
<br /> ei obi Orifi,D,D�e:,Oi iO`,
<br /> (H, I, J,K or L) - M = sgft - ft= lineal feet o, �•'�'s:� ° ='°
<br /> 01iQ•°Q�0'o 0 0•S i0° •i
<br /> Rock depth below distribution pipe plus 0.5 foot times bottom area: 18.36•W,dtrl
<br /> Rock depth in feet + 0.5 feet x Area (H,I,J,K, or L) 7• LAYOUT
<br /> (Z:�_ft ft) )3o sgft = 1170 cuft Include a drawing with scale
<br /> Volume in cubic yards = cuft =27flo0 D-Yc UHCharacuriaticsand3ullslak,9 Pip. ( one inch - feet).
<br /> lactas(SSF)la GwnWaa —
<br /> cuft _ 27 = '`ts cuyds Show pertinent:
<br /> Weight of rock in tons = cubic yds x 1.4 Fr4r r"n01' dorw S—i
<br /> _ s
<br /> ` °`
<br /> property boundaries,
<br /> � "
<br /> cl<cuydsx1.4 = tons? e
<br /> nts,� arights-of-way, easem:
<br /> O. If using 10" Gravelless Pipe, /a 16
<br /> .aww d'•[ °aj`I 0°' location of house, garage,
<br /> Flow (A) x Gravelless SSF'(see figure D-9) ,w.rr.niu s ,w, - driveway, and
<br /> _gpd x lin.ft/gpd = ft
<br /> s,r,w For,•a.•.-.r.°•"�� all other improvements
<br /> P. If using Chambers,
<br /> r"�•r.�d.w�r•.�r�"'�' existing or proposed
<br /> H,I,J, or K(Chamber depth) =width (M) soil treatment system,
<br /> sgft -- h= ft well and dimensions of
<br /> K. LAWN AREA all elevations,
<br /> Q. Select trench spacing, center to center = feet setbacks and
<br /> R. Multiply trench spacing by lineal feet R x N = sgft of lawn are separation distances.
<br /> ft x ft = sgft
<br />
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