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INDIVIDUAL SEWAGE TREATMENT SYSTEM WORKSHEET
<br /> ' • D-25
<br /> �'�W Estimatcd Scwage Fbw in Ga�ons per D�y(gpd)
<br /> A. Estimated � �D gPd N„mna
<br /> measured x 1.5= gpd or ry�t Ty�n Typc DI ry�rv
<br /> SEPTIC TANK VOLUME B`a`°°ms
<br /> B. t- 1 aS D 4� ) - looc� gallons s aso s�oo i� �
<br /> 4 600 375 256 t°`
<br /> 5 750 450 294 ��n�
<br /> SOILS(Site evaluation data) �- ,, 6 90o s2s 332 �
<br /> i �I � �i �� �j y r�A�_ 7 1050 G00 370 °�`r
<br /> C. Depth to restricting layer= 4-� '�o S -Io feet s izoo 675 aos `d'�
<br /> D. Maximum depth of system C-3 ft= i. S'-so�.o feet
<br /> E. Percolation rate 4S , t� MPI
<br /> F. SSF (.li'1 sq ft � 1(,-to 30 �+^�n�,.�. Number ,��""�` ,�"""'m
<br /> � Sc-[w�7r:i[ Ca�i:v w�tL
<br /> Of [.iquid Gart�ge
<br /> TRENCH BOTTOM AREA B`�O°`�'� c�s�b> ca��i
<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 /> SQ 3 or 4 1,000 1,500
<br /> I. For trenches with 12 inches of rock below the pipe: 5 or 6 1,soo 2,250
<br /> A x F x 0.8=2'�0 x�x 0.8=Lp�'�sq ft of bottom area+i c�o=110� 7 or 8 2.000 3.000
<br /> J. For trenches with 18 inches of rock below the pipe: O1'�9 �fig.C-b (z 1.5)
<br /> A x F x 0.66= x x 0.66= sq ft of bottom area 5,;,�„�,,,v,,,�.q,,;�,,,,�,,,,,��,e„e„
<br /> K. For trenches with 24 inches of rock below the pipe: „��,����, �il r«c� ;�� �;
<br /> A x F x 0.6= x x 0.6= sq ft of bottom area c� '''' '"�
<br /> BED BOTTOM AREA F�t�c},az,o.i• �saz,a —
<br /> L. For see a e beds with 6 or 12 inches of rock below the i ; o.�cos s�,d o.ss i2o
<br /> p g p� 0.1 to 5 Fine Sand� 1.67 0.60
<br /> 1.5 x A x F= 1.5 x x = sq ft of bottom area 6 co�s �,ay tA�, �� o.�v
<br /> ]6 to 30 Loam 67 0.60
<br /> 3]to 4.� S�It Loam . 0 O50
<br /> ROCK VOLUME IN CU�I' �to�o aa t.�, 2.zo o.as
<br /> sioWe�,�,bo--- �tay — cosa>
<br /> M. Rock depth below distribution pipe plus 0�'foot times bottom area:
<br /> M=Rock de ti�+6 inches x Area(H,I J L K) •�eo�r���•��'�
<br /> l).e�virea.for nP�Y PQ""�SIe.oJ►
<br /> P � � � "Sal lu.v�b SO�G or c�me d fa+e a.w 5x wd
<br /> (LQ+(�'ft)x(�=ly;��. cuft ����bbhapacas.Redci.yl.n
<br /> in.t.lLoon d.n ingouni.t+nd.rd•y.�ev�
<br /> ROCK VOLUME IN CU YDS
<br /> � N. Volume in cu ft divided by 27
<br /> M+27=cu yds��+27=�cu yds
<br /> ROCK WEIGHT r- 6 inches= 0% Reduction*.
<br /> O. Cubic yards times l.4=tons
<br /> N x 1.4 = tons.��x 1.4=�tons '12 inches= 20%Reduction '
<br /> 18 inches=34%'Reduction
<br /> DISTRIBUTTON ?��ss• 24 inches= 40% Reduction
<br /> (Check one based on slope) *sizing for gravelless trench
<br /> Bed qess than 6%slope)
<br /> Trenches
<br /> -=� Drop boxes(any slope)
<br /> fDistribution box Uevel to slightly sloping)
<br /> f•r•r•r•�f•r•r•r•�•f• T
<br /> TRENCH LENG'IT-I ti•1�.ti.L.ti.ti.ti.ti.ti.ti.ti.ti•,.�
<br /> �•j•f•f•r•f•f•f•+•f•�''f'j' 2 inch Cover
<br /> P. Select trench width=�_ft `'~'�'~'~'�'�'�'�'~'�'�'`'�' �
<br /> f•r•r•f-r•r•f•�•r•r•�•�•f•
<br /> L•ti•ti•1•ti•ti• •ti•ti•ti•ti•ti•�
<br /> Q. I?ivide bottom area by trench width: (H,I,J,or K)�P= '"f'f'''' f'f'r'''
<br /> ti.,.ti.ti. ti.ti•�.,.ti
<br /> t•f.l•r f•f•l•f•
<br /> lineal feet ��'�~��� ~�~���~
<br /> �f�.ti.ti� 111�1�J� 4 inch Pipe
<br /> !1�= "J =?�lineal feet '�f�'�' '�f�f�f�
<br /> ti.ti.ti.ti. ti.ti.ti.,
<br /> J•f•!•l• r•f•J•f•
<br /> LAWN AREA ~�`���`�~� ��~�~�~�~
<br /> 1•t•J•l•l• t•t•1•!•J•f•
<br /> _. �.ti.ti•,•ti•�•ti•ti•ti•ti•�•ti.ti•,, �,a �r
<br /> R. Select trench spacing,center to center= 4� feet ~f~f tirtif~�~f tij�f�f�f�f~f�f~
<br /> 1�ftirtiflftif\ftiflftift?tif�?tif'.
<br /> S. Multiply trench spacing by lineal feet R x Q=sq ft of lawn area f'r'f'f'f'`'f'f�'''�f'`�f'
<br /> ti.ti.ti-ti.ti•ti.ti.ti.,•ti.�•ti•ti•ti
<br /> r•r•f•r•r.f•f•r•r•f•r.f.r. 6-24inch
<br /> �X�-�5�Sq f t �-•.ti.•..ti.ti.ti.ti.�...ti.ti.�.ti
<br /> �rtirtirtirtirtirtir1rtiftirtirtirtirti Rock Below the Pipe
<br /> f,r•f'f•r•r•f•f•f'f•f•f•f' �
<br /> 5�•ti•ti•ti•ti•ti•1•ti•ti•ti•ti•'.•1•ti
<br /> t•t•J•l•!•t•f•t•J•f•f•f•f•
<br /> LAYOLTT(Use other side) ~�~�~���~�� ��, � � �������
<br /> tiftifti:�ftiftiftirtiftiftiftiftiftif�
<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 oYher
<br /> � . improvements, existing or proposed
<br /> 4.Show locabon 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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