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<br /> "M�U �'/o�.�d 4 _"'l � �7- �
<br /> ND DESIGN WORK SHEET (For Flotivs u to 1200 d� ��� ��
<br /> . Average Design FLOW
<br /> �� � A-1: Estimoted Sewoga Flows in Gollons er
<br /> Estimated G OO P poY
<br /> or ineasur�d gpd <see figure A- ) ' • num er o
<br /> _____ x 1.5 (safety fnctor) _ � �d��oms ciou�
<br /> — �pd 2 Clau II Ciass ill C1as,•
<br /> . SEPTIC TANK Capacity �3 � 225 180
<br /> 45p 3pp �`� .�
<br /> �� ` ✓ -� 375 218 of rr,� I
<br /> Z -�v a+c� /U 5 7bp 2`'� voi��:
<br /> �allons (s e e f i g u r e C-I)�'� � 6 � 4� �Y" �n r r,; j
<br /> � t050 � 3�-� Cioss i. I
<br /> . SOILS (refer to site evaluation) e �200 3�0 „ `'`:`'
<br /> 675 408 co�ur;ir,s.
<br /> Z� y C•1: Sr lic Tunk t':�,�i•ifi�a lin �:�Ilunsl
<br /> 1• Depth to restricting layer - Z,o • Z, _ �5'•,
<br /> 2. Depth of � Eeet Numb�ro( Min�mu�uliquiJ VyuiJ�;,N,,ciq wi� ��4uiJ: ;�.:.:i�
<br /> percolation tests - , �j �C�- B�1rWms C�p;,ci� N•itii,li,�,,,,.:,
<br /> 3• Texture. L0�4 feet Y g�ub��,��;��»�, ��
<br /> �RGC , lili in.i,::
<br /> � 3�- �s.�p� �,�
<br /> P��rcola tion ra te�_ �3��a "'s
<br /> - mpi �2-c'�9,�' ''r�oo �,� �5,,,
<br /> 4• Soil loading rate O,S'o o ` '��u :''�"
<br /> —__.___�pd/sqft (see frgure D-33) ��a���y '"W "'..
<br /> 5• Perceilt land slope p,d % ��h�'
<br /> • ROC�: LAYER DTMENSIONS
<br /> 1• MuItiply average design tlow (A) by 0.83 to obtain re uir
<br /> --�SZ_gpd x 0.83 sqft/gpd = oo s ft q ed rock layer area.
<br /> 2. Determine rock layer width = 0.83 sqft/gpd x inear Loading Rate (LLR
<br /> 0.83 sqft/gpd x Z �
<br /> 3. Len�th of rock layer = area + W dt�'� �� ft
<br /> �_ sqft (D1) + � ft (D2) -_ ft Mound LLR -
<br /> . ROCK VOLUME < 120 MPI < � 2
<br /> 1• Multiply rock area (D1) by rock depth of 1 ft to get cubic feet o '- � 20 MPI < 6
<br /> °o sqft x 1 ft = .Sov ruft f rock
<br /> 2. Divide cuft by 27 cuft/cuyd to get cubic yards
<br /> �_ cuft +27 cuyd/cuft = /
<br /> 3. Multiply cubic yards by 1.4 to get w�of rock in
<br /> —�_ cuyd x 1.4 ton/cuyd = �_ tons �,tonsc
<br /> � la /'o
<br /> F• SEWAGE ABSORPTIpI�I WIDTH �
<br /> D-33: AbwrNtiuu 1VidW SizinL'fyt,ic
<br /> . Perculytipi R��r
<br /> � � � in Minutea per S�il Tetture L�i���w"
<br /> Ineh Gau„n, ninwpuo��
<br /> MPf Rr J..per Ic.ii„
<br /> Absorption width equals absorption ratio (See Figure D-33) u, ��
<br /> Fumr than S Cn.v,e�anJ i
<br /> times rock layer width (D2) ���.���m�y�� �_� ,,W
<br /> �,,.��r s.�o
<br /> Z � C�' __6W1i_.. I''^eS+rhj.. _..
<br /> ' x v 2 =-- - sy,�,��o:� -- .
<br /> � f t = % f t �i,�o is - . s.`"'�i.�:,��... _
<br /> �,�., ,,,�
<br /> u.su ' ,,,�
<br /> /A/ o f����W �.�y Jill.
<br /> ^ O I . � �`� ♦ � �/ C�! / ���(�/` .. . "17 Clay La.ui �- u.�.i �' .. )
<br /> � :���r ci.r�..,��
<br /> 61 W I:U . l I�y I.VaLLL I
<br /> �ii�y CLy U::
<br /> �L � / ��/ / �.n�� •.- .l'aWy Clay —-� _ S.u,
<br /> � Slnw�r Wa�12U• .��— .
<br /> 'J�w�n wul�.J hw Ur•�•,..�.�w.�4r u�r�
<br /> .i�rri......�.e
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