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� � MOUND DESIGN ti1/ORKSHEET <br /> � • (For Flows up to 1200 gpd) <br /> . � � <br /> A. FI'OW E�timued Sewaae Flov�n in Callonc rer d�y <br /> Estimated y.<C� gpd (see pages D-7 or I-3,4,5) � �. <br /> or measured _ - gpd x 1.5 = -�- � rya I �u �w � �� <br /> ' . Bearaom. y <br /> B. SEPTTC TANK LIQUID VOLUMES s as00o io'�o i�8a° � <br /> 4 600 37S 256 if°' <br /> � - �c�c:� u gallons (see pages C-3 or G5) s �so .w z�e ~e <br /> 6 900 525 332 7�.L <br /> .. 7 1050 600 370 � <br /> C. SOILS (refer to site evaluation) g '2°° 6's °oa a=- <br /> 1. Depth to restricting layer= _ aa'�rv 3 0 '� inches . �'�'�•k c•��M�� <br /> Number o[ MlnLnaa lJquW Liquld e�qeiry weh <br /> 2. Depth of percolation tests = I�'� inches e�. c,.�,,, �.�,,,.�,,,,, <br /> 3. Percoladon rate �,.� mpi :ak.. ,� „u <br /> 4 or 6 j 00 �yS�p . <br /> 4. Land slope � % �,e«9 �oo ,� <br /> mer 9 <br /> D. ROCK LAYER DIMENSIONS <br /> 1. MulHply flow rate by 0.83 to obtain required area of rock <br /> layer: Daily F1ow x 0.83 = � <br /> �v gpd x 0.83 sq. ft./gPd =i�sq. ft:t��'��u= 4 �v" � <br /> 2. Select width of rock layer (10 feet or less) _ _ l� ft. <br /> 3. Length of rock layer = Area+Width = r <br /> i-I 1 o sq. ft.+ l o .ft. = 41 ft. Rock Bed <br /> ;rN•t t•l•t l•l.r.�.f.f.f.f.j ! <br /> � � �.�.ti.�.�.�.�....�.�.�.�. T ; <br /> f l•r•f.l.! f•r•t•t.t•/.r•f.f ' <br /> ' 'ti•ti•ti•ti•ti•ti.�.•,.ti.ti ti.ti.ti.ti.ti. dth S10f1 � <br /> r r•r.r.r.r.f.,•.f.�.f.f.r•r•r <br /> ti•ti ti.ti.ti.ti.�.ti•ti•ti ti.ti.ti.ti.ti. <br /> E. ROCK VOLIJME •f•••r•f•r.f.f.r.f.r.�.f.f.f.r 1 . <br /> � Length <br /> 1. Miaitiply rock area by rock depth to get cubic feet of rock; <br /> r; sq. ft. x i.�°,� ft. _ �o cu. ft. ' <br /> 2. Divide cu. ft. by 27 cu. ft./cu. yd. to get cubic yards; <br /> �'= �, cu. f t. +27=.L(.`cu. yd. . <br /> 3. Multiply cubic yards by 1.4 to get weight of rock in tons; <br /> J.�.cu. yd. x 1.4 ton/cu. yd. - ��:? tons. <br /> F. ADSORPTION WIDTH � _.�� ' � i-t:�i��� � <br /> 1. Percolation rate in top 12 inches of soil is �-�•�' mPl /�bsorption Wldth Sizlog Tnblc <br /> Percolatfon Re�c Gdlom R�tio of <br /> . Select allowable soil loading rate from table on page E-; s�M�����.p� so��r�x��K perdayper AIKar�tonwidiA <br /> r_; �� �n�/fJ Ineh(MVl) puirc foa 10 Kak I�yer <br /> ' 1[- <br /> 3. Calculate adsorption width ratio by dividing rock layer F���«���.�o.�• c�so�e ..__ ��h <br /> o.i w s s.�a i.io i.00 <br /> loading rate of 1.20 gpd/ft�by allowable soil loading rate; o.��s•• ��s.�a•• o.�o =.no <br /> 6 to 13 SAndy l.c�em 0.79 1.32 <br /> 1.20 gpd/ftZ+ . t: - SPd�ftZ= -- .�: . (_•�� i6�o:�o t�.m o.60 �.00 <br /> 31 to 45 Slli L.o�m 0.50 2.�0 <br /> Check this value on yage E-16. 46��► c�.y�,,, . o.4s 2.�, <br /> �60 to 120 Clay 0.24 S.W <br /> 4. Multiply adsorption width ratio by rock layer width to get 5�120;;;�� c�.y __.. ._. <br /> required adsorption width; <br /> � . i.-��x l�� ft = .::(_2ft : <br /> I <br />