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� � � MOUND DESIGN WORKSHEET <br /> ' ' (For Flows up to 1200 gpd) <br /> A. FLOW �•a a•+�u•��»+u+o.n«u p« <br /> Estimated � � gpd ''"� 'n'p'' �'II �'�'p`m � <br /> or nleasured,_:_x 1.5=_.=._.,gpd• <br /> ao <br /> B. SEPTTC TANK LIQUID VOLLTMES a� <br /> 4 E00 ?73 2S6 <br /> s �so ,�o �+ "� <br /> 1-��..5�- � �- 10 0-o gallotls , s soo s�s m <br /> � i i� e�s � �'a <br /> . I � � <br /> C. SOILS (refer to site evaluation) ,�"Zo" ,, � <br /> 1. Depth to restricting lnyer a ��``-��• inches__feet �� �.r...�w .,.,,,«., -",�ST <br /> 2. Depth of pexcolation tests= � � ��►� "'"' """'' a"""""' """' <br /> • nwn. »e uy i� <br /> 3. Texture �-�� � Percolation rate a.=atpi ��� �� ;� � <br /> 4. Land slope___.�_.,% '.""" '°°° '°°° �°° <br /> D. .D <br /> 1, Mu1tlply flow rate by 0.83 to obtaim zequized area of rock layer: A x 0.83 = <br /> � � gpd x 0.83 sq. ft./gpd = �a� sq. ft. <br /> 2 Select width of rock layer(max 10' if<120 mpi.nlax 5') _ /=ft. <br /> 3. Length of rxlc layer=area+width= � m•� <br /> c�_ a�_sq• ft+ �_,�•��� w � , <br /> , Width_1� . R <br /> <120mpi <10' un �' <br /> E. ROCK VOLUMfi � >120mpi c5' <br /> 1. Multiply rock nrea by rock depth to get cubic feet of rock; �=sq. ft x %-�= ' <br /> - ft._�;�,cu.ft. <br /> 2. Divide cu. h.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 rocic in tons;�.,cu. yd. x 1.4 <br /> ton/cu.yd. _�tons. <br /> F. ABSORPTZON WIDTH �e.�„vnn�a a��e�. <br /> 1. Percolation rate ia top 12 iaches of soil is 3��mpi ���r �,� � �� <br /> Texture L�-�"( �--o�A�,ti'� c�ti �.� ta�w <br /> r..�ta..a� ce.�+.s..a �so �.ao <br /> ai as ��..e aeo ioOOo <br /> .2. Select allowable soit loadiag rate ficom table; ��,s :..er�. a�9 �.s: <br /> ��- SPd�� � �i»� m�. °0'.60�0 :.0°0 <br /> 4�w t0 �drr l�w O�AS t6� <br /> 3. calculate adsorptton wiath ratio by aividing rock layer <br /> !Iw�IAi�120 � 0.20 6.0�0 <br /> loacling rate of 1.20 gpd/ft2:by allowable soit loading rnte; <br /> 1.20:.gpd/f�+��gpd/�� � a-�-� . <br /> 4. � Multiply adsorption width ratio by zock layer width to get � <br /> required.adsoiptioa width; <br /> =�,,�'? x,a ft= � • ft <br />