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MOUND DESIGN WORKSHEET
<br /> (For Flows up to 1200 gpd)
<br /> < <
<br /> A. FLOW e,�;�,u�e s�.r.a��o��,c.u«,.���y csn�
<br /> Estimated o o gpd
<br /> or measured - x 1.5 = - gpd. e�a►� �`� �u ry�n� �ry�rv
<br /> z soo us i so w.
<br /> 3 ISO 300 218 •r
<br /> B. SIIrITC TANK I.IQLJID VOLLJMES ' 6°° "s '� ,�
<br /> S 750 454 29+ �
<br /> �-f J.�� �' 1-/L�(9 0 g2llOI1S wl��. 6 900 57S 3 72 '"°
<br /> 7 fQ50 600 370 ,dm,
<br /> 8 1200 675 �08
<br /> C. SOIIS (refer to site evaluation) y N,�� �� �w
<br /> 1. Depth to restricting layer= ay ' a��;,,��inches B� �,, �,
<br /> 2. Depth of percolation tests = ���" inches `'"'"' `'W"'
<br /> 3. Percolation nte f a• ) mpi �l a 4� �'.oSOoo i'.'s o
<br /> 4. Land slope °10 �«a � a o 0
<br /> �Q 9 s«�s�.c-� ��i s�
<br /> D. ROCK LAYER DIlv�T1SIONS
<br /> 1. Multiply flow rate by 0.83 to obtain required area of rock
<br /> layer: A x 0.83 =
<br /> c�o . gpd x 0.83 sq. ft./gpd = �w� sq. ft.
<br /> 2. Select width of rock layer (10 feet or less) _ !� ft.
<br /> 3. Length of rock layer = area�-width = Rock Bed
<br /> � _sq. ft. + !�_ft. _�� ft. ,.ti.,.,...,.,...,.....,.,.,.�.,.�
<br /> 1•t.I•1•t•f•I'•�•I I�!•1•l•f•!•I•
<br /> 1•ti•1•ti•1•1KHMM•ti•�•1M•�•�•ti
<br /> r•f•i•�•�•i•r•r•� r•r•r•f•r•�•r• �dth 510 ft.
<br /> +•ti.�•ti•�•ti.ti-ti•ti•ti•ti.ti.�•ti•�•ti•ti
<br /> r•r•r•r•r•r•�•r•� �•r.r.r•r.r•r•
<br /> �•�•�•�•ti.�•ti•ti•ti.�.�•ti•ti•ti.�•ti•�
<br /> .f.r.�.i.�.f.r.f.r.r.r.�.r.r.r.r.
<br /> E. ROCK VOLUME ~- 1'�'g�' --�
<br /> 1. Multiply rock azea 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 yards;
<br /> '�cu. ft. y 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. _ �I tons.
<br /> F. ADSORI''lTON WIDTH G� � Abao tlan Wfdth Si� Lbk
<br /> 1. Percolation rate in top 12 inches of soil is 1�..I mpi r�,,,��,�,� �-- ���
<br /> M�,,,,,,,pR�, Soil Texture ,p,� �,'''
<br /> c�,pu �.. .:�.�a
<br /> 2. Select allowable soil loading rate from table; Faster than 0.1 oarse Sand 1.20 l.00
<br /> 0.1 to 5 Sand 1.20 1.00
<br /> '-�,,�- �d�f� 0.1 to 5 Fne Sand" 0.60 2.00
<br /> 6 to 15 ndy Loam 0�79 ��Z
<br /> 3. Calculate adso Hon width ratio b dividin rock la er t6 co 30 1,oam o.bo z.00
<br /> � }' $ }� 31 to 45 Silt Loam OSO 2.40
<br /> loading rate of 1.20 gpd/ft2 by allowable soil loading rate; �to 6o c�a [.oaa, o.as 2.6�
<br /> 1.20 d it2y � d/ft� _ �,.(, 6' co 120 �lay o�a s_oo
<br /> � � �,�� �L_• Slower than 120 Cla
<br /> "Soil luvin6 501L or mae d fine a vcy fvx sand
<br /> 4. Multiply adsorption width ratio by rock layer width to get
<br /> required adsorption width;
<br /> a.�x�ft =�.2ft
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