Laserfiche WebLink
. � , <br /> . . <br /> . . 11�IOUND DBSI�N WORKSHEE'T � • <br /> , ` . ' (For Flows up to 1200 gpd) <br /> A. FLOW • Eana.be s��.�a.n�:�a.� <br /> Estimated �Sp gpd (see pages D-7 or I-3,4,5) � <br /> or measured gpd x 1.5 = — �� '�'p°r �'''°° '�'�'�� '�'p° � <br /> nedrooa,, v <br /> B. SEPTIC TANK LIQUID VOLUMES 3 's° '°° Zig � <br /> 4 600 37S 2S6 dw <br /> �-i�.So� �-�o0o gallons(see pages C-3 or GS) 6 �o sas �i �� <br /> 7 1060 600 370 <br /> C. ���r�el't0 Sl�eV�LlA�011� i 120� 673 IOS w�� . <br /> 1. ��l fi0 Z+@Str�Ch21g la'�@T a 10 K-f0_2 b�� �l1C�1e8 �`�c'�`��"�M r� <br /> M d I�IIeYanA LIqrY �d a�eb vM� <br /> 2. Depth of percolation tests = 1 a. '� inches �� �r .-�•+� <br /> 3. PercolaHon rate �6 . I mpi 2,q';� ;o '� <br /> 4. I.and slo� � 9�0 �«� �0110°ou <br /> ���--� . <br /> D. ROCK LAYER DIMENSIONS t <br /> 1. Multiply flow rate by 0.83 to obtain required area of rock ' <br /> layer: Daily Flow x 0.83 = • <br /> �j�gpd x 0.83 sq. ft./gpd = �,aa� sq. ft.�-i o"�� -6�y ` . <br /> 2. Select width of rock layer(10 feet or less) = 1 c� ft. <br />. 3. Length of rock layer �Area+Width = <br /> ��U sq. ft.+ � D ft. _� ft. Rock Bed <br /> �r�r�r�f f�f�r�f��'�^"�•�•�f�f�f ,� <br /> �ti ti�ti�l�ti�ti�S�ti�'��'�ti�ti�ti�'r� <br /> r r Hr�r�r f�r�Nt�H/�/�r��' <br /> ��;�;�ti�ti�����ti�����S�ti�ti�ti�ti� �II S�OR <br /> . . �t���t�s�t�t�l'�l�t tN�r�1���/ <br /> tifi�i�tir���tyrif�r~�'iji�ji}if~r <br /> E. ROCK VOLUME F-- Length <br /> 1. Multiply rock area by rock depth to get cubic feet of rock; <br /> ��..sq. ft. x �.�� ft. _ �t�cu. ft. <br /> 2. Divide cu. ft. by 27 cu. ft./cu. yd. to g�t 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. ADSORPTTON WIDTH LL�}'`l LoY}lv1 <br /> 1. Percolation rate in top 12 inches.of soil is �.1 mpi Abeaption Wldth Slzln=71,Sk <br /> 2. Select allowable soil loading rate from table on page E-; ���"�r► s��,��. aaa.y"v�► ��.w►� <br /> ,u,< gpd/ft� �r� wx«ktm. <br /> � <br /> 3. Calculate adsorpNon width ratio by dividing rock layer F.�.►+�a� �..�a.�a - <br /> loading rate of 1.20 gpd/ft�by allowable soil loading rate; o.�a s s�a �.io �.00 <br /> o.�b s•• r�ne s.�a•• o.ao s.ao <br /> 6 ro 13 Saby Ln�m 0.79 't,37 <br /> 1.20 gpd/ft2+ . 4 gpd/ft2= ��l�'� . . ii ros si� o:o �'o <br /> Check this vulue on page E-16. �b o "�,.,,�°"" au s.no <br /> 4. Multiply adsorption width ratio by rock layer width to get S ,�;.;N^ a.� --- --- <br /> . required adsorpHon width; <br /> . �. x_�ft= a�,� ft " <br /> � <br />