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E•19 <br /> MOUND DESIGN WORKSHEET <br /> (For Flows up to 1200 gpd) ' <br /> A. FLOW D-7 <br /> Estimated o o gpd (see pages D-7 or I-3,4,5) a"'"'m'��°"��°�^�°�^-- <br /> � rar+ern trve ar�oioc�c[ <br /> or measured gpd. �� � n � a <br /> t 700 t!! 1�0 W; <br /> • � �00 7D0 !1� N <br /> • �00 J7� W M� <br /> B. SEPTTC TANK LIQtiTID VOLUMES : ,'o �; � '''�.; <br /> , �� .� �,� <br /> a - J o0 o gallons (see pages C-3 or G5) • �� •n •« � <br /> C-3 <br /> C. SOILS (refer to site evaluation) 6EITIC T1NK CA�ACITf!!, IN GALIONs <br /> 1. Depth to restricting layer = i a � � inches <br /> M.�a rw�r .�rme:�,w <br /> �eoa� up�o uv�on ois.ou� <br /> 2. Depth of percolation tests = ► � ' ' inches ,a�„, „� ,,,, <br /> 3. Percolation rate y t�. � mpi �«�� �••• �••• <br /> .�. ,... .,�. <br /> 4. Land slope S % �� <br /> ,..�. ,... .... <br /> D. ROCK LAYER DIMINSIONS __ <br /> 1. Multiply flow rate by 0.83 to obtain required area of rock <br /> layer: A x 0.83 = - <br /> �..00 gpd x 0.83 sq. ft./gpd = y°� Y sq. ft.-� ��`��, S�-�� <br /> 2. Select width of rock layer (10 feet or less) _ � r� ft. <br /> 3. Length of rock layer = area+width = � <br /> .� t� Sq. ft. + 1 U ft. _�ft. Rock Bed <br /> t•t•1•f•t•l•t.J.l•J•!•f•t.r•f <br /> . ti.ti•'L•ti•1•ti.ti•ti•1,.ti.'L.ti.ti.ti.ti. <br /> t•t•1•t•f•t•1'•t t•f•l�f•t•.'•l <br /> - ti•ti•ti•ti•ti•ti•ti•ti•{•ti•ti•ti•�•ti•ti• dth S10ft. <br /> l•l•r•f•l.l•1.1•f•t•t•l.l•t•l <br /> 1•ti•ti•t•ti•�.•ti•ti•ti•ti•'L•ti•ti•ti•ti• <br /> •,r•f•l•f•f.f•f•f•f•f•f•f•f•f.j <br /> E. ROCK VOLLTME F--- Length <br /> 1. Multiply rock area by rock depth to get cubic feet of rock; <br /> s�2 sq. ft. x I•bS ft. _ �� cu. ft. <br /> 2. Divide cu. ft.by 27 cu. ft./cu. yd. to get cubic yards; <br /> C�LI cu. ft. + 27=�_cu. yd. <br /> 3. Multiply cubic yards by 1.4 to get weight of rock in tons; <br /> a� cu. yd. x 1.4 ton/cu. yd. _�tons. <br /> F. ADSORPTTON WIDTH <br /> 1. Percolation rate in top 12 inches of soil is y� b mpi E-16 <br /> 2. Select allowable soil loading rate from table on page E-16; N.o-..�.��,�a.�.,,.�.d.b. <br /> . 4 S gpd/ft2 � �-»�-•— <br /> �M� IY�M Y��� <br /> 3. Calculate adsorption width ratio by dividing rock layer "'"" """ �"" '""" `�"""'°" <br /> ..,. . .... .... ..» ,... <br /> loading rate of 1.20 gpd/ft2 by allowable soil loading rate; ' �" •" '�" '�" ',� <br /> u .ee e.�o e.N �.a �.a <br /> f1 •1{ O.b O.N f.p �.�� <br /> 1.20 gpd/ft2+��gpd/ft2 = � .�� .. ... ... ..,� ,..� ..�, <br /> ., .,.. .... e.,. .... ..a <br /> Check this value on page E-16. <br /> 4. Multiply adsorpHon width ratio by rock layer width to get <br /> required adsorption width; <br /> �x�.�.�� ft = a�.� ft <br />