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INDIVIDUAL SEWAGE TREATMENT SYSTEM WORKSHEET
<br /> D-25
<br /> r�.ow
<br /> EAimettd Sewage Flow in Galloas per Day(gpd)
<br /> A. Es�lmated � SD $pd N��
<br /> measured x 1.5= gpd or ry�� T�u Typc III ry�rv
<br /> SEPTIC TANIC VOLUME B`e`°°mS
<br /> B. �- 1 �S D 4 ) - /c�oc� gallons 3 Qo 3�0o i80 `�`
<br /> 4 600 375 256 `b`
<br /> SOILS(Site evaluation data) ��tS ,, 6 90o sa�s sz Y�
<br /> n A s._ 7 1 O50 600 370 O16e
<br /> C. Depth to restricting layer= 4�-c,'� �o S�-to'� feet �4 �d�
<br /> D. Maximum depth of system C-3 ft= i, S'-sc.�.o feet g 12°° b�s aos
<br /> E. Percoladon rate 5S . � MPI
<br /> r tit�s� �t��,.�
<br /> F. SSF /.t,'1 sq ft/gpd �c.-+0 30 ,�,n�.,,. tiumber s��,.-;�:, c.;.��:�w�:�
<br /> of (;q,,;a c.�.�
<br /> TRENCH BOTTOM AREA B��� ���> ���
<br /> � H. For trenches with 6 inches of rock below the pipe:
<br /> A x F= x = ft of bottom area 2 or less 750 1,125
<br /> � 3 or 4 1,000 1,500
<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=7 ' 7 or 8 2,000 3.000
<br /> �L x�x 0.8=��sq ft of bottom area+io�o=110� over 9 See fig.C-b (z 1.5)
<br /> J. For trenches with 18 inches of rock below the pipe:
<br /> A x F x 0.66= x x 0.66= sq ft of bottom area 5,;,o,,,.�m„o k�,,;�,,,r,,,,,��,m,e„
<br /> K. For trenches with 24 inches of rock below the pipe: Pa,m,,;,,,,�u ��- �-
<br /> A x F x 0.6= x x 0.6= sq ft of bottom area '""°'c�,,°�i "�' s°il r�`e� `°' "`�
<br /> BED BOTTOM AREA F�s��,az,o.i• .�saz,a — —
<br /> L. For see a e beds with 6 or 12 inches of rock below the i o.i cos s�,a o.sa i.zo
<br /> P g p�% 0.1 to S Fine Sand~ 1.67 0.60
<br /> 1.5 x A x F= 1.5 x x = sq ft of bottom area 6 to ls dy�, ;2Z o.a9
<br /> 16 to 30 Loam [I 67 0.60
<br /> 31 to�t.i $`�Iil.oaai T60 O50
<br /> ROCK VOLUME IN CU FI' ���� Qay� z.zo o.as
<br /> Slowa than 60"' Qay — (024)
<br /> M. Rock depth below distribution pipe plus 4�foot times bottom area:
<br /> •�,�o m..,<<o�K.,.��,�
<br /> M=Rock de thS+6 inches x Area(H,I,J,L,K) ����-+�nP��Y��-
<br /> P "Sml h..-.ng SO+t or nme a!uu or�w 5x.u,d
<br /> (/, 0 +(�'ft)x(lo� =1�1?�. cuft �s�''"''-,�°'°�:,'�";�°'�'y'�
<br /> ix�Nal�oon d H�gou� t.,,Z..d.,,�
<br /> ROCK VOLUME IN CU YDS
<br /> j N. Volume in cu ft divided by 27
<br /> M+27=cuydsty�+27=�cuyds
<br /> ROCK WEIGHT
<br /> O. Cubic yards times 1.4=tons 6 inches= 0% Reduction*.
<br /> N x 1.4=tons��x 1.4=�tons 12 inches= 20% Reduction
<br /> 18 inches= 34% Keduction
<br /> DISTRIBUTION ?��ss. 24 inches= 40% Reduction
<br /> (Check one based on slope> *sizing for gravelless trench
<br /> Bed(less than 6%slope)
<br /> Trenches
<br /> � Drop boxes(any slope)
<br /> �Distr-ibution box(level to slightly sloping)
<br /> TRENCH LENGTH tir{fti:tif{?tifti{tijti{tiftiftiftif{ T
<br /> f'f'f'f'f'f'r'j'f'f'f'f'f' 2 inch Covez
<br /> ~•~'~„'•�•�•t•t•t•�,�••••t••• �
<br /> P. Select trench width=�_ft f•f�f•f•r•f•j•f•f•f•f•f•f�
<br /> ti.ti.ti.ti.ti.•.. .ti.,.ti.ti.ti.,
<br /> f1• J•f•f•:•J l•l•l•J•
<br /> \,[ Divide bottom area b trench width: (H,I,J,or K)=P= ti•ti•�•ti• ��ti•ti•ti•ti
<br /> Y t•f•J•t t•1•t•1•
<br /> t.�.ti.ti. ti.ti.ti-ti
<br /> lineal feet tirti;ti;tif ftil�jtifti 4inch Pipe
<br /> 1 � - 'J =Z �lineal feet f'f'f'f f'f'l�f'
<br /> !�� ' �..� ~f�J�l�t. .f~f~ftif:
<br /> LAWN AREA �r�f~f�j�f� f�f~'r~f~1~f~
<br /> - � ti�ti•ti•1•ti•1•ti•ti•ti.�•1•ti•ti•'y 11
<br /> R. Select trench spacing,center to center= 4� feet f�r�f�f�f�r�f�f�f�f�f�'�f� �a
<br /> tiftiftltiftiftftiftiftiftiftiftiftif�
<br /> ti•ti•ti•ti•ti•1•ti�1•ti.ti•ti.ti•ti•ti
<br /> S. Multiply trench spacing by lineal feet R x Q=sq ft of lawn area ��ti����fti��r~f�f�'•ti'•�fti�+��
<br /> .r.r•r.r.r.f•f•f•r•r.r.r.f. fr24inch
<br /> �_ �__�� ���•~•~•�•t•t•~•�•�•~•�•�•~
<br /> 3 7 X S ft r•r•r•f•r•r•r•r•r•f.r•f•r• Rock Below the Pipe
<br /> q titi.ti•tititititi � til � ti , �
<br /> f•t•f•!•f•r•f•J•l•l•1•l•!•
<br /> '..ti•ti•L•ti•ti•ti•ti•1�ti•ti•ti•ti•ti
<br /> r•r•r•r•f•r•r•r•r•r•f•r•r-
<br /> LAYOiTT(Use other side) ~f�f~f�f~f�f�f�f�f�f�f�r���
<br /> t•ti•b•'�•t•ti•ti•ti•ti•ti•ti•ti•ti•ti
<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,driveway,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 well.
<br /> 6.Dimension all set backs and separation distances. Figure D-26
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