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i • <br /> Taw�rrr - � .lOb#� <br /> �� <br /> Universi� o�Minnesata Il�ound Design Waksheet <br /> ti�wbeirthan t'K 8bp�s <br /> a � � <br /> 9Dd(see b�ne A-1J <br /> o�meas�r�ed . x 1.5(safel�►fac�aj= 0 9Pd <br /> B. SEPTIC TANI(LpUD VOWMES <br /> Seplie�anlc capeidty 2000 9allons(see fig�e G�1) <br /> Nurtiberdtankslbomp�2rtimeMs 0 <br /> fflluent F�Oer(yesha) yes <br /> C-1 Se�tic TaNt C�p�p in G�ons � <br /> Number af " I�rwrwm Capadty wiih Capadty wilh . <br /> Bedroor� Garb.Disp. Disp.and Li(t <br /> or less 1 <br /> 3 ot 4 1500 <br /> 5 ar 6 2250 <br /> 7,Sor9 3000 <br /> C. SOK.S(S�e eva�ratinn de�) <br /> 1. 0��o restric�ng layer 21 <br /> 2. Deplh d penodalion t�fs= 12 ind�es <br /> 3. Te�xe bem <br /> 4. Sa'I loadng rale(see Figuna D-33) , 0.60 gpol fl. <br /> PEroda6on rale 6 MPI <br /> 5. 96 I.and Sbpe 7A X► <br /> o. Hoc�c u�� <br /> 1. Mulbply ave�age design flnw(A)bp 0.83 to obtain requir�ed ar�of rock layer:Item A x 0.8� <br /> 600 �d x 0.83 il�k,�pd= 500 il� <br /> 2. Oe�ermine rodc ia�rer�wi�h =0.83 fih�d x Lineer L.oedxig Ra�e(LLR)(see LLR chart <br /> 0.83 R2/gpd x 12.00 = 10.0 ft <br /> LLR Clart <br /> Perk R�a�e LLR <br /> <120 MPI <=12 <br /> >=120 MW <� <br /> 3. L�englh d rodc lay�er=area�vided by widlh= <br /> 500.0 it� / 10.0 feet= 50.0 it <br /> E. ROCK VOLUME <br /> 1. Muhipy rodc area by rodc depth to get cubic feet of rock <br /> � 500.0 X 1.0 ft= 500.0 ft3 <br /> 2. Divide ft3 by 27 iC;llyd�to get abic yards <br /> 500.0 it� / 27 = 18.5 yd3 <br /> 3. I�liply aibic yaNs b�►1.4 b get weight of rodc�tons; <br /> 18.5 yd3 X 1.4 torJyd3 = �.9 �ons <br /> Page 1 of 5 <br />