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ENCLOSURE 1. CALCULATIONS and CHARTS <br /> R <br /> Xi= 74.5 <br /> -1 Xo= Xi-Xt= 32-7 <br /> P=' Yo= XoH/(LW-Ls)= 12.3 <br /> A = 45 '1Y Yr= (Lb+Ls)Pr/Lr= 11.7 <br /> F° = 100 F't Yt= H/2-Yo-Yr = 20.5 <br /> LY;= =H=1W r S=1 <br /> Ls= 33 ft 1-1rA* Xf= XF-W/ =-0.4 <br /> Av I-- 1!�!t"l ;r 1 Xv= Xf-W/2=-0.4 f t <br /> %n= Xt+Xe= 43.4 Ft <br /> _ AI'"FN.h' c=°"""' = Cx=Px= ccosX=CLb+Ls)/Lr <br /> = 133/142=.9366 <br /> Xs= 2L13=67 ft R <br /> Lr= -- Cy=W-Py= csinX=H/Lr <br /> = 100/142=.7042 <br /> Bc= osln(Lr/2R)=52.1 deg Lr '1 Yb=Rb(,9366)= 65.9 <br /> Lc= 158 ft R ��, Yr=Yb+H/2= 115.9 <br /> Ac= 2924 sf I Ym- Yr-Yt-95.4 ft <br /> Rb= 70.4 Pt `" P h Lu= (XM^2+Yrt^2)^.5= 104 <br /> Xc= 7Q.a <br /> Rc= 70.4 ft)/12=12.3 Ft Rr Yr^ Fr= 0sln(YM1Lu)= 66.5 de <br /> '" F-v= asin[Rsin(F)/Lu)= 21.1 <br /> At= 12924 sf W Fp= 90-Fr-Fv= 2.4 deg <br /> Xt= (AsXs+AcXc)/At= 41,8 fit ,.- YON Check )0 deg Pos Cohes, <br /> Ws= .Atx150- 969 T 1'1 f is Px= ,9366 = PsinFp <br /> Rr= R-Rb= 29.6 f t Xi = K0419), P= 22.350 <br /> 74.5 N = WXr1-PRsinA-CR= 0 <br /> Y XI: Xo Yt o C = 2164 Ib/159= 13.7 psf <br /> N N = stability no= Cs/GH <br /> W Cs= 2164 G= 150 H= 10Q <br /> N = 0.144 use FA= 5 deg <br /> Act FA=451 F.S. = 9 <br /> X L= <br /> -- -45 7 007 <br /> Using Bishop Simplified Method, factor of safety is 3.6. <br /> SIMPLIFED BISHOP METHOD SLOPE STABILITY ANALYSIS f' <br /> S� 1u 1'' i' <br /> l <br /> I <br /> a <br /> 1 9 I <br /> � — <br /> 'E <br /> 1a4 1 22 n 7s' 2' 1 a 129 a 53 l29 7 7 <br /> "JI <br /> a aB. L 1296 23 751 1311out 13:01113ie113.al 9 -S <br /> 71161. fiA 251 <br /> iGU1; 1Y 1122�i:6 t4 !, �lE.. ----- <br /> el 2 , a - 2 .6 997:: J 9GE5?/96 -ai 'e 2J2 <br /> _J <br /> Factor of Safety 3.6 <br /> i� <br /> ,i <br /> i.. <br /> i <br /> i <br /> 7 <br /> Technical Revision to M1985-001 J&J Pit, La Plata County, dated 24 AUG 2016 Page 33 <br />