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IND1�aDUAL SEWAGE TREATMENT SYSTEI�T WORKSHEET
<br /> � D-25
<br /> �'���• Estimucd Sewage flow io Callocs pa D�y(gpd)
<br /> A. `Esdmated LaD � gpd
<br /> measured x 1.5= gpd ��o� Ty�i ry�u ry�nt T�rv
<br /> SEPTIC TAI�K VOLLTti1E B`�t0O1OS
<br /> B. � -1 D D a gallons 3 a o 3�0o i� �
<br /> 4 600 375 256 1°`
<br /> .r�
<br /> SOILS(Site evaluation data) 6 I 90o su 3 i ��
<br /> cd��
<br /> C. Depth to restricting layer= '7-�;�" 'fo�> 8' feet $ i2oo 5�s ao�
<br /> D. hlaximum dept h o f system C-3 ft= �•S ' feet
<br /> E. Percolation rate . '� h4PI
<br /> Number '`t�"m'� �t�nm�,ro
<br /> F. SSF ,I a� SC� ��� of Sc T.ck Gp.�iryWi�b
<br /> �`�� c��.,�
<br /> TREI�ICH BOTTOhi AREA � ��flV'Et.t�sS B�O°�"5 �8�i �� csil��
<br /> � H. For trenches with 6 inches of rock belo��� the i ���L� '
<br /> p�' °' 2 or less 750 1.125
<br /> A x F=Lao x ,1 a� _�Sr3 sq ft of bottom area-+�o"� =�3`� 3 or 4 1,000 l.500
<br /> I. For trenches with 12 inches of rock below the pipe: „ 5 or 6 1,500 2,250
<br /> A x F x 0.8= 6ao x La�x 0.8=J�_sq ft of bottom area-+io`°� (,c,�l 7 or 8 2,000 3.000
<br /> J. For trenches with 18 inches of rock below the pipe: �SE- over 9 See fig.C-6 (x 1.5)
<br /> A x F x 0.66= x x 0.66= sq ft of bottom area S,,,o,�„aQ,,,o,,�,,,�,,,.�,,,,,k,,,,�,k,,,,,,,,
<br /> K. For trenches with 24 inches of rock below the pipe: P�,,;�,�,,, +�s-r �
<br /> Mw�p�r�nd� Soil Tc�cture i M r%��
<br /> AxFx0.6= x x0.6= sqftofbottomarea ��, �-
<br /> BED B01'I'O�i AREA Fuce�,�o.�• o�su,d — —
<br /> L. For see a e beds with 6 or 12 inches of rock belo�v the i o.i eos s�„a o.a3 i.zo
<br /> P g p�� 0.]to i Fine S,i�d" 1.67 0.60
<br /> 1.5 x A x F= 1.�x x = sq ft of bottom area o���� �d.��o�, �?,. o.;v
<br /> lb�io 30��' l.oam `I.b7 0.60
<br /> 31 to d5 Silt Loam 2.00 O50
<br /> ROCK VOLUAIE IN CU FT ab�o¢o a�y Lo�, 2?0 o.as
<br /> slowe than 60"' Qay — to2�)
<br /> M. Rock depth below distribution pipe plus OS Eoot times bottom area:
<br /> •sal bo co.n�ie. �e�e.m�me
<br /> M=Rock depth+6 inches x Area(H,I,J,L,h') � �"�^'"�"'1Of<'Pd�YP��'y�'O1L
<br /> "Soit hivin6 507L er mwe d Iv�e w ver fin wd
<br /> (1.J +0.5 ft)x�r�= oo cu ft `;,,�^�',,,i�,d":�';��„P'�,°,,,,;�;'„�
<br /> ROCK VOLUME IIV CU YDS
<br /> N. Volume in cu ft divided by 27
<br /> � M+27=cuyds/g�+27=�cuyds
<br /> ROCK WEIGHT
<br /> O. Cubic yards times 1.4 = tons 6 inches= 0% Reduction*
<br /> N x 1.� = tons�Z x 1.4=�tons 12 inches=.20% Reduction
<br /> 18 inches=34%'Reduction
<br /> DISTRIBUTION 24 incfies=40% Reduction
<br /> ��r U�eAJc L`.F ss -����
<br /> (Check one based on slope) i",s� ��y : s ���,�,,,,�, *sizing for gravelless trench
<br /> Bed (less than 6%'o slope)
<br /> Tre ches '� a�'� u�a.�c to"o,a .
<br /> �Drop boxes(any slope) "4��'�''`'``'`-' ��''c`�.
<br /> Distribution box(level to slightly sloping)
<br /> + TRENCH LFI�IGTH tiftir•r•r•r•r•f r.r•�•�•�•r• T
<br /> '•'•'•~•''•'•~•~ ~•�•~ 2 inch Cover
<br /> � f.l.t•t•�•r•IN•l.l•t.t.l•
<br /> ♦•�.ti•ti•1.•ti•t 1�•ti•�•ti•ti•ti•ti �
<br /> P. Select trench width=��ft r•r•�•f-r•f•;•.•�•.•f•�•r•
<br /> ti.ti.ti.ti.ti.ti. .�.ti.�•�•ti•ti
<br /> Q. Divide bottom area b trench wid th: (H,I J or K) =P= "''r""' ''''''''
<br /> Y � � �f~ftil�� ttti!~l�fy
<br /> 1•ti�ti•ti• � �•1•ti•'ti
<br /> lineal f�t ti;ti;ti?ti, f�{ti���� 4 inch Pipe
<br /> (,,�=�_�,�lineal feet f�j�,•f '•�''f�'�
<br /> :.ti...ti• ti.,.�•�
<br /> f•r•r•r• f•+•r•r•
<br /> �.�•ti•�•�• �•ti•�•ti•�
<br /> LAWN AREA 'r�r�f'f�r� f•f•"`'r•f• ll
<br /> "'''""'"�'�'`'�'ti''"'� 1 a
<br /> R. Select trench spacing center to center=�feet f�f�f�f�f�f�f�r�f���r�f�f�
<br /> i �t�t�t�t��'�/~f�J�l~t~f,l,l±
<br /> \.1.�•ti�ti•ti•ti•ti•t.ti•b•ti�\•ti
<br /> S. Multiply trench spacing by lineal feet R x Q=sq ft of lawn area ±r+'•�=�f~'•ti�tif+f�'-+'•��+'•+f� �2a inch
<br /> !•t•t•t•t•l•f•t•!•f•J•t•l•
<br /> '4.'\.L•t•ti•ti•�.�.1.ti•1.�.1.1
<br /> ��X = l�`6t-�SC]ft r•r.r.r•f•r.r.r•�•r.�.r•�. Rock Below the Pipe
<br /> �.�.�.�.�.�.��.�.�.�.�.�.� 1
<br /> r•r•r•r•r•r•'r•r•�•f•�•r•r•
<br /> ti.ti•ti•�•ti•ti•�•�•ti•ti•ti•ti•ti�ti
<br /> t•f•t•!•t•f•t•!•r•I•�•J•!•
<br /> LAYOUT(Use other side) 1•�•�•�•~•�•1•�•~•,•�•�•�•,
<br /> tififti:tiftif��tirtif��tifti�tif���
<br /> 1.Select an appropriate scale;one square= feet.
<br /> 2.Show pertinent property boundaries,right-of-way,easements.
<br /> 3.Show location of house,garage,drive�vay,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�vell.
<br /> 6. I?imensi�n all set backs and separation distances. Fioure D-26
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