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• TRENCH ANI� BED WORKSHEET
<br /> �. A:�,�RAGE�DESIGN FLOW �(.{Q� �, �-j"��. q•1: Estimat�d Sewafla Flow�in Gallons per Day
<br /> A. Estimated 3'?S gpd(see figure A-1) num ar o
<br /> or measured x �(safety factor)_ - gpd badrooms ciass i aas.n aau m aou iv
<br /> B. Septic tank capacity a-1 oe7 o gallons(see figure G1) s a,�5o 225 28e o�ne
<br /> 'P`.k1`.s�C 375 256 values
<br /> 5 750 450 294 In the
<br /> 2. SOILS(Site evaluation data) - 0 900 525 ss2 ciass i,
<br /> C. Depth to restricting layer= to`-�, �`'�*�- feet > » � s�o u,or m
<br /> D. Max depth of system Item 2C-3 ft= 6.v ft-3 ft= . D ft 8 �2°° b�s 408 columns.
<br /> E. Texture L�� 1-o�r�✓� Percolation rate LO•D MPI
<br /> F. Soil Sizing Factor(SSF) a. a sqft/gpd (see figure D-15)
<br /> �',. %Land Slope % C-]: Se ticTankCa adNes in allons
<br /> ��'4����`��� Liquid capacity
<br /> 3. TRENCH or BED BOTTOM AREA G�1'►4yvl�y�.. Number of Minimum Liquid Liquid capacity with W���sposal&
<br /> H. For trenches with 6 inches of rock below the pipe: B��S Capacity garbage disposal lift iuside
<br /> A x F= 3?� gvd x a,�sqft/gpd= 4�a� sqft zo���s �so »�s ��
<br /> I. For trenches with 12 inches of rock below the pipe: 3°�a �000 tsoo �
<br /> A x F x 0.8= gpd x sqft/gpd x 0.8= sqft ��s a9 z5oo�o 30�0�0 300°
<br /> J. For trenches with 18 inches of rock below the pipe:
<br /> A x F x 0.66=end x S ft/ d x 0.66= s ft D-15: Soil Characteristics and Soi1 Sizing
<br /> q � Q Factor(SSF)(>3'se aration)
<br /> K. For trenches with 24 inches of rock below the pipe: P.l�o�.�ion R,« $oil 5lzing F�clor
<br /> A x F x 0.6= _�ud x sqft/gpd x 0.6= sqft m'^u4sperinch SOIITlFLYtf .��d`Kf���'m,
<br /> L. For gravity beds with 6 or 12 inches of rock below the pipe; fv«<w�,o.�• c�..�,a o.�
<br /> 0.1 to S Medium sand O.B3
<br /> 1.5 x A x F= 1.5 x _�d x sqft/gpd= sqft o.,�5•• Fine�Yand�d �.6�
<br /> 6 to�15 Sandy Iwm 1.27
<br /> For pressure beds with 6 or 12 inches of rock below the pipe; ,6�o� t.«m �.6�
<br /> A x F= eud x sqft/gpd = sqft 3��o.s s;���o.m 2�
<br /> sile
<br /> 46 to 60 Clay Iwm �
<br /> S�ndy day
<br /> 4. DISTRIBUTION(Check all that apply) S�"�`''Y
<br /> over 61 to 120"' Cl�y �.7A
<br /> Bed (<6%slope) Drop boxes(any slope) Rock •S�d���yY
<br /> slower than 120"•
<br /> Trenches Distribution box(<3��0� Chamber ' ae eystems or rap� y permea e soi s:
<br /> prcswre dutribuHon or xnal dietribuHon with
<br /> Pressure Gravity Gravelless ^��^�h>2596 of the total system.
<br /> •5oi1 having 50%or morc fine�and plus very fine sand
<br /> •"A mound mu�t be uxd.
<br /> "•An other or performance system must be uxd
<br /> 5. SYSTEM WIDTH,LENGTH and VOLUME
<br /> M. Select trench width= ft D-9: Soil CharaMeristics and Soil sizing
<br /> factors(SSF�for Gravelleas Pipe
<br /> N. If using rock,divide bottom area by width: (H,I,J,K or L) =M= Percoia�;o„�„e linea!feet/
<br /> SClft+ ft= lineal feet (minutes/inch) soil texture gallon/day
<br /> Rock depth below distribution pipe plus 0.5 foot times bottom area: Fas�ai�o.l• M d;m�,a o.zs
<br /> Rock depth in feet+0.5 feet x Area (H,I,J,K,or L) Lo�,�,y s�,a
<br /> 0.1 to S Fine Sand•• 0.6
<br /> ( ft+0.5 ft)x sqft= cuft e�a�s Sandy Loam a�
<br /> ]6 to 30 Loam 0.56
<br /> Volume in cubic yards=volume in cuft divided by 27 s��oas Silt Loam o.6�
<br /> su�
<br /> CUft=27= cuyds 46 to 60 Clay Loam(CI,) 0.74
<br /> Sandy CL
<br /> Weight of rock in tons=cubic yards times 1.4 s��ty cc.
<br /> slower than 60•• Claq -
<br /> cuyds x 1.4= tons Sandy Clay
<br /> O. If using 10"Gravelless Pipe, Flow (A)x Gravelless SSF(see figure D-9) s;�ryciay
<br /> 5oi1 too coarse for sewage troatment.
<br /> �,�pd x lineal feet/gpd = lineal feet Use aystems for rapidfype rmeable soils.
<br /> "Soil having 50%or more iine sand+very fine sand.
<br /> P. If using Chambers,H,I,J,or K(based on height of chamber slats)+ ••'Soil with too high a percentage o(clay to�
<br /> width of chamber in feet(M) installation ot a standard inground system.
<br /> '�S � sqft= 3.0 ft=_,(� s��'`o�v�v ¢
<br /> a a� lineal feet 1 N� 'C¢v�'o , Gok IIkF bNe
<br /> y V"5��tl}S�� �-1��A1�v14�Zi 's'4vq�'f�'_s :4' .�rrr.rw..
<br /> 6. LAWN AREA ��,¢ ��:�
<br /> Q. Select trench spacing,center to center= � feet 4`.b,r � 'h
<br /> A�,:s.bss:.<p:.b;a:• 3l.��
<br /> R. Multiply trench spacing by lineal feet R x Q=sqft of lawn area o�p S b b b�'e'§s s
<br /> �_ft x�lineal feet= �ac� sqft �:s,� :�: `,�3� �
<br /> �� e .�a;o �:,
<br /> �� �.*s.�b.:s�4x s•
<br /> o� s s t s_u,q�s, :
<br /> ��4.3�.�b..�b 4 �
<br /> 7. LAYOUT {►J6•WdN -
<br /> Include a drawing with scale(one inch= St� 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 d'unensions of all elevations,setbacks and separation distances.
<br /> I hereby certify that�ave completed this work in accordance with applicable ordinances, rules and laws.
<br /> � ` . ' (signature) 3� _(license#) S-a 1 - U� (date)
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