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- � f � <br /> �' � �'//rIL1�I� �//C; <br /> (F"�Y FIQws to 12d0 gpd) �i��s��i�s'� 2-y-5 u,Y� �� �/q� <br /> � <br /> _... <br /> A. FLOW . . . e��w s.w.��a o.,r��m�y <br /> Estimated /350$`p�l(s�paggs D�7 or I-3,4,5) � <br /> or measured_.._....�, gpd x 1.5 � . eza. rn"� '�" '�'°'u' '� <br /> B. SF.PTIC TANK LIQUID V�I.UMES ; � � 3� ,� <br /> Z@ /5vo gall�ri� (�Qs page�C-�or�-5) 6 � s�s � � <br /> � �oso �oo �o � <br /> . . i ��oo bu �a ..� <br /> C. SOILS�Tefe�'to�it��v�lu�tion) .��_��o o� <br /> 1. Depth to r�stric�tng layer� Zy inches a * �� � r <br /> 2. Depth of percolation tQsts • �Z ��� <br /> �3. Percola�on rate,� 8 mpi 1f B� io =:'` �� � <br /> 4. Land slop¢._,_ lo °fo 3 ,�;«; ,� � <br /> D. ROCK LAYER DIM��I�ISIONS <br /> l. Mu1NPIy flow rate by 0.83 to obtain r�quired are�of rock <br /> layeT:D�ity F14w x 0.83 � <br /> /__35D__�pd x 0.83 sq. ft./gpd� /�Z0,5sq. ft. <br /> 2. Select width of rock Iayer(10 fPet or less)_ �� ft. <br /> 3. Length of rock layer=Area+Width = <br /> //ZD, sq, ft.+ /_ft. _ ��Z ft. Rock Bed <br /> dth 510 R <br /> . � . <br /> E. R�CK VOI.UMB �gw <br /> 1. Multiply rock area by rock depth to get cubic feet of rock;� � <br /> %Zo sq. ft.x � ft. � �� cu. ft. <br /> 2. Divide ru.ft.by 27 cu. ft./cu.yd.to get cubic yards; , <br /> '/�Za cu. ft. +27� y/y cu.yd. � ,�ti._ <br /> 3. MulHpty cubic yards by 1.4 to get weight of rocic in tons; ' <br /> /.5 cu,yd. x 1.�ton/cu.yd. � 58,/ tons.. `' � <br /> F. ADSORP'TION WFDTH �p�pv�n Width Sizfn=�aen <br /> 1. Percolation rate in top 12 inches of soil is�mpi � <br /> 2. S e l e c t a l l o wa b t e soil loadin g rate from tabla on pa gQ E, �� �u�x«� ,�� aA°�'��,�D <br /> . . � 8pd�f� n <br /> 3. Calculate adsorpdo�width rat�o by c�ividing rock layer ��s i �s.� ;:� ,.� <br /> loadfng rate of 1.20 gpd/ft��y allowable soil loading rate; Qaais� s�"�,ar� a 9 iai <br /> . 1.20$pd/ft�+ D� ,.Spd�ft2• /,�Z • 3i a:°s s�� aso ia <br /> Check this value on e E-16. ��� c.� o.4s :.6� <br /> �8 6o b��a �"�.4.r as� s.nu <br /> 4. MulHply adsorpdon width ratio by rock tayer width to get � ,�m.;;^ �r ---- �� <br /> required adsorpdon width; <br /> �o x /s2 ft � /S-Zft <br /> _____ <br /> _.._.. ------� --------- <br /> . _�, � <br />