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���1�TI� L�ESI�1� W�IgK SI-�EET' (For Flows up to 1200 gpd) <br /> �� ��v�g��� ��Sy� ���� A-l: Estirv�afied Sew�ge�lows in Gallons�er�ay <br /> ,S'�>���c�L'Wl nurri erot <br /> Estimated '7 S�U gpd (see figure A-1) bedr�oms cios�i �ciass�i c�ass ni ciosg 9v <br /> or measured -- x 1.5 (safety factor) _ — gpd 2 300 225 �so bo% <br /> 3 450 300 218 of the <br /> 4 600 375 256 values <br /> �. S�I'TIC TANK Capacity 5 750 450 294 in the <br /> 6 900 525 332 Class I, <br /> a. - I ��� gallons (see figure G1) � �05o boo 37o ii, or m <br /> I 5ov �a1 'Qam4 �N`�'`^�Q,�- 8 1200 675 408 columns, <br /> C. SOII.S (refer to site evaluation) C-l: Se ticTaukCa acities(in allons <br /> Number of Minimum Liquid Liquid capacity with W���disposal& <br /> 1. Depth to restricting layer = a�d� a,3� 3.3�feet Bedrooms Capaciry garbage disposal ��ft inside <br /> 2. Depth of percolation tests = �.0 feet z o�ie55 iso >>as 15� <br /> 3. Texture G�� L�A-vh 3or4 �000 �s� 2000 <br /> Percolation rate I 2. � s o�6 �soo zzso 3000 <br /> mpi �,a a�9 Z000 3doo <br /> 4. Soil loading rate �`i S gpd/sqft(see figure D-33) <br /> 5. Percent land slope 4 % <br /> D. ITOCK LA1'ER DIMENSIONS <br /> 1. Multiply average design flow (A) by 0.83 to obtain required rock layer area. <br /> ��v gpd x 0.83 sqft/gpd = (e�«„ sqft <br /> 2. Determine rock layer width = 0.83 sqft/gpd x linear Loading Rate (LLR <br /> - 0.83 sqft/gpd x ) � gpd/sqft= Jc� ft �g��y�d LLf� <br /> 3. Length of rock layer = area =width = <br /> �.���: sqft (D1) = �ft (D2) _ (�� ft � 1 �o �P� < 1 � <br /> E. ROCK VOLUME � 1 2O ��%I PI G b <br /> 1. Multiply rock area (D1) by rock depth of 1 ft to get cubic feet of rock <br /> �O`�,� sqft x 1 ft = "'l t� cuft <br /> 2. Divide cuft by 27 cuft/cuyd to get cubic yards <br /> ?".;��:� cuft = 27 cuyd/cuft = � cuyd <br /> 3. Multiply cubic yards by 1.4 to get weight of rock in tons <br /> �.3 cuyd x 1.4 ton/cuyd = 32 tons <br /> D-33: Absorption Width Sizing Table <br /> F. SEWAGE ABSORI'�'ION WID'Y'H PercolauonRate LoadingRate <br /> in Minutes por Soil 7'exnue Gallons Absorp�ion <br /> Inch per day per Ratio <br /> Mp� s uare(oot <br /> Faster than 5 Coarsc Sand 1.20 1.00 <br /> Medium Sand <br /> Absorption width equals absorption ratio (See Figure D-33) LoamySend <br /> d <br /> times rock layer width (D2) 16 to 30 Lo�,,, o.� Z.� <br /> 31 io 45 Silt L.oam 0.50 2.40 <br /> d=��X I�V ft = ��r� 1 t 46 to 60 Sandy Clay L.o 0.45 2.67 � <br /> Silry Clay Loam <br /> 6I l0 120 Silty Clay 024 5.00 <br /> _ Sandy Clay <br /> Cla <br /> Slower than 120• <br /> •Syaiem d�signed(or Nue wils rtwst be oeLer or per(ormence <br />