|
TRENCH ANI3 BED WORKSHEET ,
<br /> �1. �1 VFRAGE DESIGN FLOW A-1: Estimatad Sawafla Flow�in Gallons per Day
<br /> A. Estimated � D� gpd(see figure A-1) num or o
<br /> or measured x �(sa e actor)= d badrooms ciou i ciau n ciaa iu aa�iv
<br /> f�✓f � 2 300 225 180 60%
<br /> B. Septic tank capacity o n o allons(see figure C-1) 3 aso aoo 2i a or me
<br /> ' fTb}� �`7 4 600 375 256 values
<br /> 5 750 450 294 In the
<br /> 2. SOILS (Site evaluation data) a 900 525 ss2 ciass i,
<br /> C. Depth to restricting layer= 9 te.� feet > >� � 3�o u,or m
<br /> D. Max depth of system Item 2C-3 ft= ft-3 ft= � � ft 8 �� b�s aos columns.
<br /> 1, S, �.o� �.3 5��'"�'�F'!�^S)V�•
<br /> E. Textuze ��-�`� Lp'Awl Percolation rate 11.y MPI
<br /> F. Soil Sizing Factor(SSF) �.d sqft/gpd(see figure D-15)
<br /> (�,. %Land Slope % �� ' �s�•'"�+*'► C-1: Se tic Tank Ca acides in allons
<br /> 3. TRENCH or BED BOTTOM AREA Number of Minimum li uid Li uid ca aci W�� Liquid capacity
<br /> Bedrooms Capacity9 garba a�sry�i W��disposal&
<br /> H. For trenches with 6 inches of rock below the pipe: g P° lift inside
<br /> A x F=�pd x sqft/gpd = sqft 2o�ioss �so >>u ��
<br /> I. For trenches with 12 inches of rock below the pipe: 3 ora �000 �soo Z�
<br /> 5 or 6 1500 2250 3�
<br /> A x F x 0.8 = gpd x sqft/gpd x 0.8= sqft 7,s or 9 z000 3000
<br /> J. For trenches with 18 inches of rock below the pipe:
<br /> A x F x 0.66=e Cj X S ft� C�X�.66= s ff D-15: Soil Characteristics and Soil Sizing
<br /> P 9 � q Factor(SSF)(>3'ee aration)
<br /> K. For trenches with 24 inches of rock below the pipe: r..�o�.�:o�R.�. Soil Sizing Factor
<br /> A x F x 0.6=end x sqft/gpd x 0.6= sqft m�utes per inch So►�T.x�,.r� w�a FKfty°"°"
<br /> L. For pravi{-��beds with 6 or 12 inches of rock below the i e• f.�«�w.�,o.�• c�..x�^d o.�
<br /> p `J PP � O.1to5 M«d'u��dd 0.83
<br /> 1.5 x A x F= 1.5 x�,e,ud x sqft/gpd = sqft o.,�os•• Finesand �.6�
<br /> 6 to 15 Sandy loam 7.27
<br /> For pressure beds with 6 or 12 inches of rock below the pipe; �6�e� Loem
<br /> AxF= p,�,� ,,,.,dx �.t� s ft/ d = S��Os ft 3��045 � 2
<br /> --i�--bY q $P q ae�0 6o ci:y io,�„ 2zo
<br /> s,�dy d.y
<br /> s�ity�i.y
<br /> 4. DISTRIBUTION(Check all that apply) over 61 to 720"' �dY���Y ..zo
<br /> �Bed (<6%slope) Drop boxes (any slope) � Rock slower than 120"••s''�'�''Y
<br /> Trenches Distribution box (<3%) Chamber • �sY.«ms or rapi y permta �.o�g:
<br /> preasure distribuHon or senal distribuNon with
<br /> Pressure Gravit Gravelless �o trench>25%of the total system.
<br /> Y •'Soil having 50%.or more fine sand pius very fine sand
<br /> •'•A mound mu�[be used.
<br /> "'An other or per(ormance ry�tem must br used
<br /> 5. SYSTEM WIDTH,LENGTH and VOLUME
<br /> M. Select trench width= ft D-9: Soil Characteristics and Soil sizing
<br /> factors(SSF)for Gravelless Pipe
<br /> N. If using rock,divide bottom area by width: (H�1�J�K OT L�=M= percolation rete lineal feet/
<br /> SClft= ft= lineal feet (minutes/inch) soil texture gallon/day
<br /> Rock de th below distrib tion i e lus 0.5 foot times bottom area: Fas�e<<n�,o.i• Coarse Sand —
<br /> p �-� P�P P 0.1 to 5 Medium Sand 0.28
<br /> Rock de th in f et+9�t'eet x Area (H,I,J,K,or L) c.a�,�,y sar,a
<br /> p �.� 0.1 to 5 Fine Sand•• 0.6
<br /> ( /,0 ft+(�=�'ft)x 4SL o a sqft=a3y Q cuft 6�o ls Sandy Loam o.az
<br /> ]6 to 30 Loam 0.56
<br /> Volume in cubic yards=volume in cuft divided by 27 3]to45 Silt Loam o.b�
<br /> suc
<br /> �34 t� cuft=27=`�Zcuyds as�o eo cia Loam(CL) oaa
<br /> Weight of rock in tons =cubic yards times 1.4 �si�ci _
<br /> slower than 60•' C ay
<br /> �5 7 cuyds x 1.4=1�� tons Sandy Clay
<br /> s;�ry ciay
<br /> O. If using 10"Gravelless Pipe, Flow (A)x Gravelless SSF(see figure D-9)
<br /> 5oil too coarse for sewage treatment.
<br /> �pC�X lineal feet/gpd = lineal feet Use systems for rapidlype rmeable soils.
<br /> "Soil having 50%or more Ti�sand+very fine sand.
<br /> P. If using Chambers,H,I,J,or K (based on height of chamber slats)= ••5oil with too high a percentage of clay fo�
<br /> width of chamber in feet(M) instauation of a standard inground system.
<br /> sqft+ ft= lineal feet o-,o.Q �kx��kF+brk
<br /> `'°'� s�::�:: �z-�«e.a
<br /> a::s`�s`5�. . q:,
<br /> 6. LAWN AREA 4:�4�' .b���b� f,•a.��;,� a`�
<br /> s.'s::o. ;.�s � 9��
<br /> Q. Select trench spacing,center to center= feet b;a:�; ..•.a,' "
<br /> �,�,b�..4...,b'wb;,b,
<br /> R. Multiply trench spacing by lineal feet R x Q=sqft of lawn area °::�:qs�:Y:4•e��:�;�;
<br /> 4 y'.,'e�bYb:,bi e;y:;q;d
<br /> �_ft x 72- lineal feet=�4S 0 t� sqft <s==�=`qy�`o�o~` 6-24"Ro�x �.a►�
<br /> onb�°'��:Y,b'�4:bwb a�� 3�4-21�2��
<br /> :s::c=.�s::b,:a.�o,.o:a.
<br /> o1's:�:s:.o,;G;o b;•'y��'s,�� •
<br /> o:�DY��$_S��bi: c�.o=aF
<br /> 7. LAYOUT a�;��������'s=s•�
<br /> 1&36'Wdlh
<br /> Include a drawing with scale (one inch=��feet). Show pertinent property boundaries,rights-of-way,ease-
<br /> ments, location of house, garage,driveway,and all other improvements, existing or proposed soil treatment system,
<br /> well and dimensions of all elevations,setbacks and separation distances.
<br /> I hereby certify that I have mpleted this work in accordance with applicable ordinances, rules and laws.
<br /> ,i` �^--- ��' � � � (signature) 3�� (license#) �' ��3—�3 (date)
<br />
|