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I�1DIL'IDUAL SEWAGE TREATMENT SYSTEM ZNORKSHEET
<br /> . .. .
<br /> ,, , FLOW Estimated Scwage Flows in Gallons per day
<br /> A. Estirnated C C� O gpd (g�)
<br /> measured --- x 1.5= — gpd um r
<br /> SEPTIC TANK VOLUME of Typc I Typc II Typc III TyUc
<br /> Bedrooms 1V
<br /> B. J —/0 0 C� gallons
<br /> 2 300 225 180
<br /> SOILS(Site evaluation data) 3 450 300 218 �
<br /> ,, � 4 6�0 375 256 °t`�`
<br /> C. Depth to restricting layer= 5(� -ro 7 `� feet "''°`�
<br /> 5 750 4S0 294 ;,,
<br /> D. Maximum de th of s stem C-3 ft= � • s � feet 6 900 525 332 �Yr��.
<br /> p Y 7 1050 600 370 I�°f
<br /> E. Percolation rate I I. S MPI g 1200 675 a08 �oi��
<br /> F. Soil Sizing Factor .l �� sq ft/gpd (See table 3)
<br /> TIZENCH BOTTOM AREA Scptic Tank Capacitics,in gallons
<br /> H. For trenches with 6 inches of rock below the pipe:
<br /> A x F= x = ft of bottom area Number of Minimum Liquid I-�9arba ePd s'�osal�
<br /> SQ Bedrooms Capaciry g g p
<br /> I. For trenches with 12 inches of rock bclow the pipe: �
<br /> AxFx0.8=/�Qx�'Zx0.8=5�lsqftofbottomareahlo�o=��1 23oras ioso�o isouo
<br /> J. For trenches with 18 inches of rock below the pipe: a o�6 tsoo 2zso
<br /> A x F x 0.66= x x 0.66= sq ft of bottom area �.8 0`9 2°°° 3°W
<br /> o��9
<br /> K. For trenches with 24 inches of rock below the pipe:
<br /> AxFx0.6= x x0.6= sqftofbottomarea
<br /> BED BOTTOM AREA
<br /> L. For seepage beds with 6 or 12 inches of rock below the pipe;
<br /> 1.5 x A x F= 1.5 x x = sq ft of bottom area Soil Charactcristics xnd Requircd Arcas
<br /> foc Sewagc 1'rcatmcnt
<br /> ROCK VOLUME IN CU FT
<br /> !'ezcolation Rate in Squate Gallons
<br /> M. Rock depth below distribution pipe plus 0.5 foot times bottom area: �,������,�n soar�x��� r�� �r a�y�r
<br /> M=Rock depth(ft)+6 inches x Area (H,I,J,L,or K) �Mf'�> g+ll�On per ���R r«x
<br /> (� ft+0.5 ft)x�=��a i cu ft Fasur than 0.] • Coarsc Sand ---- -----
<br /> ROCK VOL-UME IN CU YDS 0.1 w5 Sand o.s3 �.20
<br /> 0.1 to 5 1-ine sand•' 1.67 0.60
<br /> N. Volume in cu ft divided by 27 6�o�s Sandy L.oam �.z� 0.�9
<br /> M+27=cu ds +27= cu ds i 6`°3°__--_ L°'"' - �`6� o.�'°
<br /> y L3a] �`� y `���o4s ssi�t�m 2.00 oso
<br /> ROCK WEIGHT a6�6o Ci,y tA�m 2.zo o.a5
<br /> Slower th�n 60 a•• GaY ---- ---•-
<br /> O. Cubic yards times 1.4 = tons
<br /> Nx1.4= tons�xl.4 =�tons
<br /> � DISTRIBUTION
<br /> (Check one based on slope) � t•t�f•f�}•f�f�f•fr;r};fr} T-
<br /> Bed (]ess than 6%slope) ���������������t��� ���� ��
<br /> r•r•r•r•r•r•r•r•r•r•:�f�r•r 2 inch Covcr
<br /> r;i�••••�'�•�••••�••'•'••'••• I
<br /> •r•r•r•r•:•r•f•:;r•:���i
<br /> Trenches ' �'�''�''�''�
<br /> . f.;,f,;. ::f:;:f.;
<br /> .ti..,..,.ti. •
<br /> �Drop boxes(any slope) tilti:ti:�• ':::f:'
<br /> r•r r•f: 'r•r;:•r 4 inch Pipc
<br /> ti•ti•ti••.
<br /> Distribution box(level to slightly slopir�g) }•r•f•f• :;f�%::
<br /> ti.�..ti.ti.
<br /> TRENCH LENGTH r�rti'•�r�r' •'�f�''r�f•
<br /> r•f•r•r•r�'r•r•:•r�r�f•:�'r•:
<br /> ti,ti,ti,ti,.,,.,,ti,ti,.,,.,.. . . . i/
<br /> P. Select trench width= 3 ft r'''f'r'f'r'f'f'f'r'f'f'r'' �a
<br /> ti••.•ti•ti•ti••.••.•ti••.••.••
<br /> Q. Divide bottom area by trench width: (H, I,J,or K)+P= rtif�'•ti;tif�'•�f�f�•'���f�'�f�f�
<br /> :•f•r• •f•r�r•r�r�::'r:r:r:f:
<br /> ••. ti••.••.•ti••.•ti••.••.••.••.••.••.•• 6-24 inch
<br /> . f.f.;.f.f.r.r.:.:.;.f.;.
<br /> lineal feet �ti'ti•ti•ti•'••ti•'••ti•ti•'••ti•'••'••' Kock I3elow the Yi
<br /> f.r.;.f.;.:.r•:•:•:•:•:•:•r; P
<br /> �+�_�lineal fcet '�:�f�'�''•'~''•'�''•'�''•''•''
<br /> Y : f;;;f•:.:.:.::::.:::::
<br /> ti..,,.,, ti..,,.,..
<br /> f•:•r•f�r�f•f•r•r�f�:�f�:�:•
<br /> LAWNAREA ti•ti.ti•.,.ti,ti,ti.ti.................
<br /> f�f;r•f•r;r;f;f•f;r;r;f•r•r
<br /> R. Select trench spacing,center to center=�fcet
<br /> S. Multiply trench spacing by;ineal feet R x Q= sq ft of lawn area
<br /> ��_x�=��sqft
<br /> LAYOUT(Use other side)
<br /> 1.Select an appropriate scale;one square= feet.
<br /> 2.Sho�v pertinent property boundarics,right-of-way,easements.
<br /> 3.Show location of house,garage,drive�vay,and all other
<br /> improvements, existing or proposed
<br /> 4.Show locaHon and layout of sewage treat►nent system.
<br /> 5.Show location of water supply wcll.
<br /> 6. Dimension all set backs and separation distances.
<br />
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