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, , � ' MOUND DESICGN WORKSHEET <br /> (For Fl��ws u}, t�� 12O(1 ���c3) <br /> A. ��W � l.sumared Sewagc Flows m Galionx per day <br /> Estimated _ � gpd iN„�„n�. iryai �ryan rram T� <br /> or measured x 1.5 =_ gpd. � °' <br /> z 30o izs i so <br /> B. SEPTIC TANK LIQLJID VOLUMES ' 450 30° 218 �� <br /> 4 b00 375 256 �� <br /> /�/�. �e/DOO gallons � h � 'eo�o `su 3ii '" <br /> Q�ey.� y���., � � iow I 600 3�o T,P`� <br /> /�C�/'� 'f N I 200 675 I 408 I f11 <br /> C. SOILS (refer to site evaluation) � �`°'"�'u <br /> � ucTuk �dti��e W�s� <br /> 1. Depth to restricting layer = � inches —Z -b feet �4Wa��x„Y <br /> 2. Depth of percolation tests = / Z �"'"""'` "'"'°"'°`'�"'° `�""°�"'""' '"`�°'�"w�` <br /> inches �^""^s GP+o�Y By�[e dizpcual lit��wdc <br /> z,.�� �so iiu isoo <br /> 3. Texture o z� Percolation rate /9_3C� mpi �,.. �� �� 2� <br /> 5���h 1500 ?250 7000 <br /> 4. Land slope S % �a„�v �� �� � <br /> D. ROCK LAYER DIMENSIONS <br /> 1. Multiply flow rate by 0.83 to obtain required area of rock layer: A x 0.83 = <br /> ��gpd x 0_83 sq. ft./gpd =�sq. ft_ <br /> 2. Select width of rock layer (max 10' if <120 mpi ma�c 5') _ /D ft. <br /> 3. Length of rock layer = area — width = �o o , o �� �o ���� Ao �� <br /> _��— s9- ft — �� ft. _ �,� ft. �`�°°`n.�D���Qa� T � <br /> �,oQ�<<��<< � . <br /> ��oocoo•D :t%� iD <br /> Width �ft a e06�D�OD n a ea ` <br /> <120mpi <10' o o Length �3 � ft� <br /> E. ROCK VOLUME >120mpi <5' <br /> 1. Multiply rock area by rock depth to get cubic feet of rock; sq. ft. x <br /> ft. = cu. ft. <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; Z.3 cu. yd. x 1.4 <br /> ton/cu. yd. _�� tons. <br /> F. ABSORPTTON WIDTH AbsorpOon wdth Siring Table <br /> l. Percolation ate in top 12 inches of soil is �O jj"1T11 Rr�dadmRurm Gal)ms {Lwoo(Abscxpxx, <br /> t Mioutes per loch Sal Tcx�urz per day per widt6 to Rock <br /> Texture � (MPI) sqiurc foac Laya W�dch <br /> Fss�cr chan 0 1 Coarse Sand 1.20 I 00 <br /> 0 1�o S Sand 1.20 I 00 <br /> Select allowable soil l�ading rate from table; o���- F�s�,a o�o �o0 <br /> 6�e I> S�ndy Lo�m OJo I.S? <br /> � � h �d/ft2 �h�a;� ��., o� ��, <br /> +�,�,�s s�i�t� oso z� <br /> ab ro 60 Clav L<um 0 45 ?67 <br /> (d��o I?0 Cl�v 0 24 S.pp <br /> 3_ Cal�ulat�> ads<�r�tion widt�i rati�, ��y di��idi1�� r���ck la�'er s'°w"°'� "" <���, o,o e�x� � <br /> loading rate of 1.20 gpd/ft2 by allowable soil loadin�rate; <br /> 1.20 gpd/ft�= jZ� gpd/ft= = a <br /> ' !�?�ilt� ��;�� ���j,ur �t:��r� �•,��.3t}� i,:ti<, . i- , �; f <br /> i � 1 � � b��� r�>��}. 1.����_�� �,��u t,� ��� ,�< <br /> reyuired adsorption width; � <br /> 2.o X � ft -Z�_ � <br />