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. , . � , • MOUND DESIGN WORKSHEET
<br /> (For Flows up to 1200 gpd)
<br /> A. �.�w &timated Sevaae Flow�itt Callons pez D�Y(gp�
<br /> Estimated �so gpd ";'r°et ,ry�� .p,�u �y�iu Ty�rv
<br /> or measured - x 1.5 = - gpd• a��
<br /> 2 300 71S 180 so�
<br /> 3 �30 300 218 •r
<br /> B. SEPTTC TANK L.IQUID VOLLTMES • , 600 ��s zs6 .�
<br /> S 730 450 29{ �
<br /> )�1�.Sc� � 1=/DO D g�OILS 6 90� 525 332 '"°
<br /> 7 1�50 600 370 ��
<br /> 8 I200 675 408
<br /> C. SOIIS(refer to site evaluation) N,�� �-- �--
<br /> Tr�t c+r+n-�►
<br /> L Depth to restricting layer= ►y"�- a ti" inches`�i i a*�� °r ''�, �....
<br /> se�°°ms � w=
<br /> 2 Depth of percolation tests = � a" inches
<br /> 3. PerCOlation rate J o. c� mpi Zi«`:` i oSOoo i'.'s'�oo
<br /> 4. I,aztd slope �) % �a a l�,o'S0°oo �
<br /> wQ 9 Ses fiy C-6 (x 1S)
<br /> D. ROCK LAYER DIIv�TSIONS ,
<br /> I. Multiply flow rate by 0.83 to obtain required area of rock
<br /> layer:A x 0.83 =
<br /> �.�-8Pd x 0.83 sq. ft./gpd=�3�sq. ft.+,���: ��yp,
<br /> 2 Select width of rock layer(10 feet or less)= iv ft.
<br /> 3. Length of rock layer= azea+width= Rock Bed
<br /> le�d 4 sq. ft.+ �,5�ft. _�_ft. ,.,.,.,.�.,.,...,.........�.,.,.ti
<br /> f.r.f.r.r.r•r•�•r�.�•r•r.r.f.r•
<br /> �.�.�.ti.�.�.�.ti•ti•�•ti•ti•ti•ti•�.ti.ti
<br /> r•�•r.r•�•r.r.r•�•�•r•r•r•r•r•r•
<br /> ti.�.�.ti•ti•ti•ti•ti•ti•�•wti•�•�•ti•ti•ti rdth 510 ft.
<br /> r•r•r•r•r•r•�•�•r r•r•r•r•r•r•r•
<br /> �•ti.ti.�.ti•ti•ti•�•ti•ti•ti.�.�•�•ti•ti•ti
<br /> .I•�.I'y.r•�.f•I.�I•r•t•f.f.f.�.
<br /> E. ROCK VOLUME ~- �'�' -�
<br /> 1. Multiply rock area by rock depth to get cubic feet of rock;
<br /> c,�,sq.ft.x �.o ft. _�,cu. ft.
<br /> 2. Divide cu.ft.by 27 cu.ft:/cu.yd. to get cubic yards;
<br /> �1`d 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. t�fLJV���N�D� L�.1 �'{ l.014 Y�'I 1�Y�dtl�Slru+ Lbk
<br /> 1. Percolation rate in top 12 inches of soil is �o,� mpi n�a,�«,r�� �°-- ��°°°'
<br /> �,.i�,,,,,�,pRa,�, SoilTexture �,� ":,,"'
<br /> (mpU �.. .�..
<br /> M
<br /> 2. Select allowable soil loading rate from table; Faster than 0.� oarse Sand i.2o i.00
<br /> 0.1 to 5 Sand ].20 1.00
<br /> �y,,5� gpd/ft� 0.1 to 5 F►ne Sand" 0.60 2.00
<br /> 6 to 15 ndy Loam 0•79 ��2
<br /> 3. Calculate adso hon width ratio b dividin rock la er 16�o�o t,o� o.bo 2.00
<br /> � � }� g }� 31 to 45 Silt Loam , OSO 2.40
<br /> loading rate of 1.20 gpd/ft2 by allowable soil loading rate; �to bo c�ay�.oam o.as 2.6�
<br /> . 61 t0120 Clay � 024 5.00
<br /> 1.20 gPd/ft�-:- .�I S gpd/ft�= a.(,� Slower than 120 Cla --
<br /> »Soil havie+s 501G oe mae d tux a vcy fux iand
<br /> 4. Multiply adsorption width rario by rock layer width to get
<br /> required adsorption width;
<br /> ,�� x�_ft= a�,� ft
<br />
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