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' , �. , MOUND DESIGN WORKSHEET <br /> , • . ; (For Flows up to 1200 gpd) <br /> A. �.�W Estimated Seaage Flow in Gallans per Day(gpd) <br /> Estimated�gpd N�� Typ�I 'rype II 'I}�pe III Type IV <br /> or measured - x 1.5 = -- gpd. s�a,�,r„ <br /> 2 300 Z1S 180 6ox <br /> B. SII'TIC TANK LIQUID VOLUMES 4 6 0 3�s° i's6 „� <br /> s �w eso 29a m <br /> I-1o1�� � 1-/�ev gallons � � � 3�0 �� <br /> 8 1200 675 408 �� <br /> C. SOIIS(refer to site evaluation). � �, u� �� " N�� „*� ��,,, <br /> 1. Depth to restricting layer=�a '�0 1 �G inches B °� �, �,, <br /> 2. Depth of percolation tests = 1 a ` inches `""�`' `""m`' <br /> 3. Percolation rate a o� mpi 23 a'a ,'o�o°o i'.s o <br /> 4. Land slope Ll % ;a 8 z'� � <br /> • wc 9 See fig.C-6 (x 1S) � <br /> D. ROCK LAYER DIlViIIVSIONS <br /> 1. Multiply flow rate by 0.83 to obtain required azea of rock . <br /> layer:A x 0.83 = , <br /> �So gpd x 0.83 sq. ft./gpd = (o�a sq. fH►e`�v'(��y° <br /> 2. Select width of rock layer(10 feet or less) _ /o ft. <br /> 3. Length of rock layer = azea=width = Rock Bed <br /> �_.Sq. ll.J' �I L. =�_l l. �1�1~l�r�t~t•f~l t f r�t•f�I J r� <br /> � ti•�•�•ti�ti.ti•N1•ti ti.S•ti•tiK.1.ti•� <br /> 1•f•1•t•1N•t•1•�•f•f.J.1.f.I•f• <br /> ti•t•ti.1.1�ti��ti•ti�.ti.ti.ti.ti.ti.ti.ti idth 510 ft. <br /> ti?tifS�tiiS:ti:��ti�ti��tifl�tftifti�ti ti <br /> •!•!.t•�•J•J•�.t.f.�.f.f•f•l.f.f. <br /> E. ROCK VOLUME ~- �Dg�` -� <br /> 1. Multiply rock area by rock depth to get cubic feet of rock; <br /> �� sq.ft.x�ft. _�cu. ft. <br /> 2. Divide cu.ft.by 27 cu. ft./cu.yd. to get cubic yazds; <br /> �cu. ft. �27=�cu. yd. <br /> 3. Multiply cubic yards by 1.4 to get weight of rock in tons; <br /> �cu. yd. x 1.4 ton/cu.yd. _�tons. <br /> F. ADSORPTION WIDTH L.�->�' ', �-G��'', A� ti�,w�a�,s� Table <br /> 1. Percolation rate in top 12 inches of soil is a�� mpi re�o,,ti�,�� �°� �°°� <br /> M;,,,,�, ;�, Soi1Texture �°ij' '°�bed <br /> P� raw�.� ad,m <br /> . (p�� fae ,bvenm <br /> wah <br /> 2. Select allowable soil loading rate from table; Faster than 0.1 oa�sana l�o l.00 <br /> ,�- gpd/ft� 0.1 to� Sand � 120 1.00 <br /> 0.1 to� Fine Sand �•� 2•� <br /> 6 to 15. ndy Loam O.i 9 1 S2 <br /> 3. Calculate adso t�on width ratio b dividin rock la er 16 to 30 [,oam o.bo 2.00 <br /> � �' g y 31 to 4� Silt Loam �-� 2•� <br /> loading rate of 1.20 gpd/ft2 by allo�vable soil loading rate; �to bo c�av Loam o.4s 2.6� <br /> 1.20 gpd/ft2i ,� �gpd/ft�_ :�,G� Slowerthan 120 Clav 024 5.00 <br /> "Soil having 509G or more af fiae ar vay fine sand <br /> 4. Multiply adsorption width ratio by rock layer`vidth to get <br /> required adsorption width; <br /> �x�ft= �c�, ft <br />