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INDIVIDUAL SEWAGE TREATMENT SYSTEM WORKSHEET
<br /> . , , D-25
<br />� � r FLOw r..�nae s�.r.=e r��a.u�.�n.y cao�
<br /> A. Estimated 4�1� gpd N,��
<br /> measured x 1 S= gpd o[ 'jYa�i '�Yr�n 'IYa III 'rya n+
<br /> SEPTIC TANK VOLUME $°dro°m'
<br /> B. I - {Do -(�a.ra.s�► gallons 3 is�o 3�0o ie �,
<br /> �L/.�+p. ' 4 600 373 2S6 rr�r
<br /> S 730 130 294 r
<br /> SOILS(Site evaluaeon data) a 9ao s2s 332 �
<br /> i �� � 7 lOSO 600 370 �—
<br /> C. Depth to restricting layer= �7-� -rc > � feet s 1200 �s �o�
<br /> D. Maximum depth of system C-3 ft= feet
<br /> E. Percolation rate le - �� MPI 5 A�o�l w�aw� � �� G��
<br /> F. SSF �,a�sq h/gpd Nnmba
<br /> of
<br /> TRENCH BOTTOM AREA B�� � �
<br />' H. For trenches with 6 inches of rock below the pipe: 2 a�esa �50 1,1u
<br /> A x F= x � _' � .sq ft of bottom area 3 a a i,00o 1,500
<br /> I. For trenches with 12 inches of rock below the pipe: 7 a$ �� �
<br /> A x F x 0.8= x x 0.8= sq h of bottom area �,Q g �e gg,C-6 (x 1.�
<br /> J. For trenches with 18 inches oE rock below the pipe:
<br /> A x F x 0.66= x x 0.66� sq ft of bottom area ,.,, k ,,,...�., �...r,�
<br /> K. For trenches with 24 inches oE rock below the pipe: ,,�,� sou r«e►� �h �:.
<br /> AxFx0.6= x x0.6= sqftofbottomarea aw
<br /> BED BOTTOM I�RE�1 �S�z''��a F�st�r lhaa 0.1• Su+d —
<br /> L. For seepage beds with 6 or 12 inches of rock below the � • oa:os s.�,a o.a3 i,xo
<br /> p�Pe• c.oo sct Qc o.i eo s t�,.s.�e- o.�o
<br /> 2:3-x A x F=i�t�x/.�= 5�sq ft of bottom area F�ct�� 6 t a to. 1 0.�
<br /> SY`1(�m �� 67 0.60
<br /> 31 to 45 Silt I.o�n► 2.00 050
<br /> ROCK VOLUME IN CU FT s�„e+�;60�- �'�i,ty a' �0 co.i+>
<br /> M. Rock depth below distribuHon pipe plus OS foot times botrom area: ,�M����
<br /> M=Rock depth+6 inches x Area(H,I,J,L,K) »;;,,�,�,��;�•��
<br /> . L_+05 ft)x = cu ft "�,.�.".�,�,..�,P'�"�.�:.."'r'"
<br /> ROCK VOLUME IIV CU YDS
<br /> N. Volume in cu ft divided by 27
<br /> M+27=cuyds_+27= cuyds .
<br /> ROCx w�Gxr 6 uicli�es= �?% Reducfion*'
<br /> O. Cubic yards times 1.4=tons
<br /> i,y,oj`'f+4 �F'�,?�' 4 C
<br /> N x 1.4=tons x 1.4= tons �2�1��� 2Q�`a�et��xction
<br /> 18�incItes . 34%Rei�u+�fion ;
<br /> DISTRIBtTITON 2�`iaches 40�%Reduction '
<br /> (Check one based on slope> *siZiil `�fOZ VeIIesS treTtch'
<br /> .:
<br /> �,Bed qess than 6°!o slope> g ��
<br /> Trenches
<br /> Drop boxes(any slope)
<br /> Distribution box(level to slightly sloping)
<br /> TRENCH LENGTH r•r•r•r•r•r•r•�•r•r•f•r•f T
<br /> �ti.ti•�ti�•ti•ti•ti•�•�•ti•ti•ti
<br /> I•/'t ht•�•Ht t•f•J•t•1• 2 jnC�1 COVCT
<br /> P. Select trench width= f t {•~;;•�•�•~ti•�•+•~•�•+•+ �
<br /> r }S.r r�•r•r r r r•r r•
<br /> �f:';}:f;f; ';�;�hrhf;f:
<br /> Q. Divide bottom area by trench width: (H,I,J,Or K)+P= }ftiftif;} �f?f?ftif:
<br /> ti.ti.ti.ti• �•ti•�•ti
<br /> lineal feet �+;+tif;. {;{{:{�{ 4 inch Pipe
<br /> + � lineal feet �i?f'f:�. f;::r'r:
<br /> — {.ti.ti.�.ti. ti.ti.ti•1•ti
<br /> LAWN AREA ti:{;:ti{;:•.ti.ti tiftirti;{fti�ti �i
<br /> . � . . .r? r s.}. f.f.�.
<br /> ti:�lti!lti.tiSti�.ti. !{.�•ti•ti L -rd la,'r
<br /> R. Select trench spacing,center to center= feet r• •r?s •r•;•r•r?r•f•r•r•
<br /> ti��•�{ ti♦�ti ti•ti•ti•s
<br /> S. Multiply trench spacing by lineal feet R x Q=sq ft of lawn area +� ��' �s{;��+=;�;;;f;f+ C�2a incn
<br /> ti � �. ti�.til�•�•i��
<br /> X : 5 f t ti} �;;��?ti}.��;;±;f�f{;;Rock Below the Pipe
<br /> r r i ti f4.ti. :�
<br /> 9 �����.��;�� .�? .�.r}f. l
<br /> : ! r?T=,•,•.•ti
<br /> LAYOUT(Use other s ide) •r;�•{•r•�•r r f•r•r•r•
<br /> 1.Select an approprlate scale;one square s feet.
<br /> 2.Show perHnent properry boundaries,right-of-way,easements.
<br /> 3.Show lxation of house,garage,driveway,and all other
<br /> . imp;ovements, existing or pmposed
<br /> 4.Show locaHon and:layout of sewage treatment system.
<br /> 5.Show]ocaHon of water supply well.
<br /> 6.Dimension all set backs and separation distances. Figure D-26
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