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: I'N'DIVIDUAL SEWAGE TREATMENT SYSTEM WORKSHEET
<br /> D-25
<br /> �'�W Estimued Seaegc Flow in Gallons pQ Day(gpd)
<br /> A. Estimated y�Ll gpd N��
<br /> measured x 1.5= - gpd ot 'rya t Ty�u Typc III Tya rv
<br /> SEPTIC TANK VOLUME B`°`°°ms
<br /> B. a- I oo (� gallons 3 aso s�oo i� �
<br /> 4 600 375 256 ,.�
<br /> SOILS(Site evaluation data) 6 �90o su iz �
<br /> � �/ '7 1050 600 370 �a,�
<br /> C. Depth to restricting layer= > � -� feet a i2oo 6�s aos
<br /> D. Maximum depth of system C-3 ft= �.� feet
<br /> E. Percolation rate 30• t� MPI
<br /> Number M�'m"m M'°'m"m
<br /> F. SSF /.t,7 sq h/gpd s� T.a,� G ry.�m
<br /> oc �„d �"..�.�
<br /> TRENCH BOTTOM AREA I����t.-��ss io'-'o,sa. Bedrooms ��;� cs��
<br /> H. For trenches with 6 inches of rock below the pipe: 2 or less 750 1,�25
<br /> A x F= 4�y x l.C,'1 = �90sq ft of bottom area 3 or a t,000 I,Soo
<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 = x x 0.8 = s h of bottom area 7 or 8 2,000 3,000
<br /> 9 over 9 See fig.C-6 (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 S,,,o,,,,,e,.m,,,,�,,,,,,,,,.,,o,s�.,.,,��.�„
<br /> K. For trenches with 24 inches of rock below the pipe: a�,.�.,� ';-..� r
<br /> A x F x 0.6= x x 0.6= sq ft of bottom area '''w�, "`d' S°�To`a'� rh ��
<br /> BED BOTTOM AREA Fasce tl,a„o.l• .a,-se su,d — —
<br /> L. For see a e beds with 6 or 12 inches of rock below the i o.�cos saz,a o.a3 �.zo
<br /> p g p Pe% o.i�o s Fine Sand- �.b� o.�o
<br /> 1.5 x A x F= 1.5 x x = sq ft of bottom area 16`�0�o L�,�' 1 0:�
<br /> 31 to S't .00 O50
<br /> ROCK VOLUME IN CU FT �"�����-`-�SS �to60 aay� Z�o o.as
<br /> Slowc than 60"' Qay (024)
<br /> M. Rock depth below distribution pipe plus OS foot times bottom area: ,����a������
<br /> M =Rock depth+6 inches x Area (H,I,J,L,K) ..w;�'�aP°�'�a`�fi„�,,,,�
<br /> (_+OS ft)x = - cu ft "�,a"°�',��'�:,�
<br /> ROCK VOLUME IN CU YDS
<br /> N. Volume in cu ft divided by 27
<br /> M+27=cuyds=+27= - cuyds _
<br /> O. Cubic yards times 1.4 RO sK wE1Gxz' 6 inches= I:0% Reducfion*
<br /> N x 1.4=tons - x 1.4= — tons 12 inCheS= 20%Reduction
<br /> 18`inches= 34�a'Reduction
<br /> DISTRIBUTION 24 inches= 40% Reduction
<br /> (Check one based on slope) *siZing`for gravelleSs trenCh
<br /> Bed (]ess than 6% slope)
<br /> Trenches
<br /> �Drop boxes(any slope)
<br /> Distribution box(level to slightly sloping)
<br /> r•r•r•r•r•r•r•f•r•r•r•f•r• T
<br /> TRENCH LFNGTH +•�•�•�•�•ti•�•�•�•�•�•�•�•�
<br /> t•J.f.�'•l.!•1•t•f.f•f.l•f• 'z UICf1 COVCi
<br /> ti.ti•ti•ti•ti•ti•5i ti•ti•ti•ti•t �•ti I
<br /> P. Select trench width= 3.o ft=�u'�,o.uY-av�.���s ••f•f•r•r•f•f•f•f•f•f•r•f• �
<br /> ti.ti.ti.�.�.ti. .ti.ti.ti•ti ti ti
<br /> I?ivide bottom area by trench width: (H,I,J,or K) y P = f'f�r�f�f l•f•f' 1
<br /> Q ti.ti.ti.ti. L•�.•ti• ti
<br /> t.l�r f•f• f•
<br /> linea] fE'et ti?ti;ti;'ti, f� tiitifti a inch Pipe
<br /> r.r.r•r r•f•f•f•
<br /> '1�+�-�lineal feetas� �.�o ����.�• �•�•�•�• �'�'�'�
<br /> f•f•f•r• f•f•r•f•
<br /> ti•ti•ti•1•ti• •ti•ti•1•ti•ti
<br /> f.r.f.l•l• .f.f.f.J.
<br /> LAWN AREA ti.ti.,..ti.ti.. ti.ti ti.�.�.ti
<br /> r•r•r•r•r r•f•r•T. r•r-
<br /> {.ti.ti•ti• ti.ti•ti•ti•ti ti•ti
<br /> R. Select trench spacing,center to center=� feet r.f-f•f f•f•f•r•r•f•f•" f•
<br /> ti.ti.,. ti.ti.ti•ti.ti.ti•ti.ti•ti
<br /> f•r•J t•r•�'•f•f•f•f•l•f•J•
<br /> S. Multiply trench spacing by lineal feet R x Q=sq ft of lawn area �•�•�•ti•�•�•���•�•�•�•�•�•� �2a inch
<br /> t•J•f•r•f•t•f•J'•f•f•f•f•l•
<br /> ti.t.ti.ti.\.ti.ti.ti•ti.ti.ti.ti•ti•ti
<br /> ��X�_= 1 3 SO SC�{t ti;ti;ti;ti?ti?ti;'ti?ti?tiftifti!ti?ti;ti Rock Below the Pipc
<br /> r•r•r•r•r•r•r•r•f•f•f•r•r•
<br /> ti.ti•ti•ti•ti•ti•ti ti•ti•ti•ti•ti•ti•ti
<br /> t•t•l•r•f•t•r•f•f•f•r•f•f•
<br /> ti.ti.ti.ti•ti•ti•ti ti•ti•ti.ti•1�•ti•ti
<br /> LAYOUT(Use other side) '•f•f•f•'''•f•f•f•f.f.f.f.
<br /> ti.ti.ti.ti.b.ti.L•ti•ti•ti•ti•1�.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 /> � 30�
<br /> 4.Show locadon and layout of sewage treatment system. �;o���,a.
<br /> 5.Show locaHon of water supply well. '��a��-+-�
<br /> 6.Dimension all set backs and separadon distances. � Figure D-26
<br /> �_/�
<br /> I
<br /> _ a�"-
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