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MOUND DESIGN WORKSHEET
<br /> (For Flows up to 1200 gpd)
<br /> A. FLOW �,um,��a s�.�t��o��,c.u«,���,Y csa�
<br /> Estimated ?SO gPd N";�� Tyy�t Tyy�u �ry�►n ry�rv
<br /> or measured .- x 1.5 = -' $pd• a�°°^�'
<br /> z �oo zis �eo w.
<br /> � �so �oo zia .�
<br /> B. SEIrITC TANK LIQUID VOLLTMES � • boo »s ass .�
<br /> s �so �so zv+
<br /> 1�D a�1 �LO�O �OILS 6 900 S1S 772 '^'
<br /> 1- 1 S � �nso 60o s�o �,m,.
<br /> F,.�-�,�v�-. ,� a �zao s�s ,oa
<br /> ��'`� �4'�� �tS
<br /> C. SOIIS (refer to site evaluation) r,,�� ,�,� ��,
<br /> 1. Depth to restricting layer= 3�'� inches a °�. �,..,, �
<br /> 2. Depth of percolation tests = i �. inches `'°"� `""�'
<br /> 3. Percoladon rate L�� mpi 2ia�` �'.oSOoo i'.'s o
<br /> 4. Land slope s a b �soo uso
<br /> .5 % 7 a i 2.000 3.000
<br /> ov�9 Sa�6�.C�6 (a 1 S)
<br /> D. ROCK LAYER DIIvf,F�1SIONS
<br /> 1. Multiply flow rate by 0.83 to obtain required area of rock
<br /> layer:A x 0.83 = �
<br /> �-SPd x 0.83 sq. ft./gpd = �� sq. ft.+�o��=�`�`►�
<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. R. + �ft. _ _� ft. ,.,.,, ..,.,. ,..,�.,.,.,.,.,
<br /> r•r 3 3 r•r•�2}•} � }•�-r•� f•r•
<br /> ti �.{.{ 1 1 ti 1�{ ti•�•tiK•t•�•ti
<br /> i•i•f i•r•� r•'r•� �•t�•r-r•r•i• �dth S]0 ft.
<br /> �.�.ti•�.�•ti.�ti•ti•�•}+•�•�•+•ti•+
<br /> r•r•r•�•r•r•f �•r r r•r•�•�•r•r•
<br /> �.ti•�•ti•�•�•ti �•ti•ti•�•ti.�.�•�•�•�
<br /> ,r,r,r.r.r.f.r. r.�.P.�.�.t.�.�.
<br /> E. ROCK VOLUME �- �'�"�' --�
<br /> 1. Multiply rock area by rock depth to get cubic feet of rock;
<br /> ��y,,,sq.ft. x .� ft. =2�cu. f t.
<br /> 2. Divide cu. ft.by 27 cu. ft:/cu. yd. to get cubic yards;
<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. �►UJV���N Y Y iu 1!C1 L�.�1'� W 1�'� on W1dth Sisit+ Lbk
<br /> 1. Percolation rate in to 12 inches of soil is�mpi r�a.tl�,w� :°�,. :a►:
<br /> P M�,,,,,„p�y„�, Soil Texture �.,�„�. .A,.
<br /> fmpU i.. .►..�..,
<br /> 2. Select allowable soil loading rate from table; Faster than 0.1 oarse Sand 1.20 �.00
<br /> 1.20 1.00
<br /> .�_ gpd/ft� o:i io s Fine Sand� o.�o z.00
<br /> 6 to 15 ndy Loam 0.79 1 a2
<br /> 3. Calculate adso tion width ratio b dividin rock la er t6 co 30 �,oam o.bo 2.00
<br /> I'P Y $ y 3] to 45 Silt Loam 050 2.40
<br /> loading rate of 1.20 gpd/ft2 by allowable soil loading rate; 61� 21 0 �'����' ola s.00
<br /> I.20 gPd/�y .��$Pd/ffi = �-lo� Slower than 120 Cla - -
<br /> "Soll}uv4n6 501G ot mae�d fvx or vey finr iand
<br /> 4. Multiply adsorption width ratio by rock layer width to get
<br /> required adsorption width;
<br /> �.�x�ft = .� ft
<br />
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