1994-006319 - new septic system - Laserfiche WebLink

Home Browse Search

' �NDIVIUUAL SEWAGE TREATMENT SYSTEM WORKSHEET 3 P�� � FLOW Estimatcd Sewage Flows in Gallons per day A. Estimatcd y 54 gpd �6},�� measured x 1.5 = gpd um r SEPTIC TANK VOLUME of Typ�I Ty�[I Ty�[i[ Ty� B. � � � , C�O� gallons Bedrooms (V 2 00 225 ISO SOILS(Site evaluatior�data) 4 300 218 � or Ui. C. Depth to restricting layer= �O "�'" feet 5 750 450 294 v'�°`� D. Maximum depth of system C-3 ft = 3 � fect 6 900 525 332 �'�� E. Percolation rate �3 � � �- MPI.�rb�, �"•�,.c`„c."_ �ySa- ��N- laa.r.� 7 1050 600 370 �iu` F. Soil Sizing Factor 2•�sq ft/gpd (Sce table 3) s;2,;r►.� �t -},y Q� g 1200 675 408 �,,,,,,,,, TRENCH BOTTOM AREA Septic Tank Capacitics,in gallnns H. For trenches with 6 inches of rock below the pipe: Number of Minimum Li uiJ Li uid ca acit wi A x F= x = sq ft of bottom area IIodrooms Capacity9 garbage disposnl I. For trenches with l2 inches of rock below the pipe: A x F x 0.8= x x 0.8 = sq ft of bottom area 2 0�ie5: �iu � J. For trenches with 18 inches of rock below the pipe: a"o�6 ---i3� ' A x F x 0.66 =°�'�o x 2•� x 0.66$��sq ft of bottom area �•8°`9 2°c�o 3oc� o�u 9 ____._ K. For trenches with 24 inches of rock below the pipe: AxFx0.6= x x0.6 = sqftoflx�ttomarea BED BOTTOM AREA L. For seepage beds with 6 or 12 inches of rock below the pipe; 1.5 x A x F= 1.5 x x = sq ft of bottom area SoU Ch•rractcrlstics and Rcqulrcd Arcas for Scwagc 1Ycalmenl ROCK VOLUME IN CU FT Percolation Rate in Squam Gallons M. Rock depth below distribution pipe plus 0.5 foot times bottom area: n,u»��a ��,�n soar�x�� r�«P« ��e,Y� M=Rock depth(ft)+6 inches x Area (H,I,J,L or K) �M�� a■a«�� ,R r� ( 1,�#t+ 0.5 f t)x�f=//�cu f t Fascu than 0.1 • Cwrse Sand - ROCK VOLUME IN CU YDS o.��s s��a 0.83 �.zo IV. Volume in cu ft divided b 27 0.��s I'inosand•• ►.b� 0.60 }� (�}�j' 6 w I S Sandy Loam 1.2? 0.79 M+27=cu yds�+27= `f�cu yds 16�� . 1.6� o.�o ROCK WEIGHT � �y m . oas stoW�:�„�60••• c�.y O. Cubic yards times 1.4 = tons �/ '--" ��- N x 1.4 = tons �7 x 1.4 = �i Ztons cJ�a..� Z a ?'rw DISTRIBUTION (Check one based on slope) r 1'•l•1•f•t•l•l•l•l�r�l•f.t T Bed (less than 6% slo�p� •ti fti j1 ft ft j1 f�.fti�ti�'.f�.�ti ft f Z jnCfl COVCT C" .ti•ti•'L•1•ti.ti.1,.ti.ti.�..•,.ti.ti. Trenches f'f•f j•f�r�f�f'��f�r�r�f "� •ti�t•ti•1•t• . �•ti ti .ti:�yf1:1f� ��r�.�fti: I �Drop boxes(any slope) f.f.f. :•;;fr;;r fti.ti.ti•ti •r•r•f• 'f•r�r�'r 4 inch Pipc Distribution box(level to slightly sloping) ,rtif~f~f: ,f;ftif;f ti•t•t•ti• • ti.�,.ti. TRENCH LENGTH '.'r'r'f•f' r'f:::f:f ti.ti.•,.,.ti. r•r•r•r•r•r•r•r•r�r�r�r%:�r P. Select trench width= 3 ft f�ftftiftiftif'��,'t ftiftftf�f�ftif jti•ti•'t•ti•ti•ti•ti•ti.ti.ti.`.ti.ti. .f.f.d.f.f.f.f.�.f.f.:•t.r �1 Q. Divide bottom area by trench wid th: (H, I,J,or K)+P= ti f;f;ft f�ltifti��fti f�f�fti fti� ��. lineal feet l�t:r:f:f:d�ftf��•��ti�ti� #ilinch f•f•r•t•r•l '''�'�'�'ti'ti'�'�'�'�'�'�'�' Rock Dclow thc I s�+ 3 =�I i nea 1 f ee t 1?,�?`r{rti�tir1rtirtirtir`�tirtif :�f�f�f�f�r�f�f�f�r�'�'�r�' I LAWN AREA ti.ti.ti.ti.ti•ti.ti ti.ti.ti.•,.ti.ti. ' f•f•f•r•l•f•f'f'f•l'f'f'f•r 1 11t�l1ttirtil�f�rti�~��ti�ti� R. Select trench spacing,center to center= 7 feet `�f�'�f�`�f• S. Multiply trench spacing by lineal feet R x Q= sq ft of lawn area �x�=��'�sqft LAYOUT(Use other side) , 1.Select an appropriate scale;one square= 2O feet. 2. Show pertinent property boundaries, right-of-way,easements. 3.Show location of house,garage,driveway,aiid all other improvements, existing or proposed 4.Show location and layout of sewage treatment system. 5.Show location of water supply wcll. 6. Dimension all set backs and separation distai�ces.