Question

The following figure shows a slope stability analysis undertaken on a clay slope using the method of slices. The table gives some details of the analysis. Fill in the spaces of the table and compute the factor of safety for the slope. Use the equation for Ordinary (Swedish) method given by + (W cosa - ul) tang') (W sin a) Y=20kNm c' = 20KN/m 6' = 29° (=b/cos Note: W should be equal to bhy Solution: W Wcos | Wsin u Slice No. (m) (m) a (deg (m) (kN/m) (bhy) (kN/m) (kN/m) (kN/m) -13.2 0.45 16.5 32 4.2 4 53.5 Sum

Answer 1

cm) Sienim, I wooso-ul w wcost wsing (kaum) ) Creadim)) (m) slice (Cdopree) (m) (bho) krem cosa 40 -13.2 ous 2,05) 01922 38.018 4900) 8.4 ) 247:42 , 38.94 -9.13 (255.82)-9.38 les no so (3.2 256 +2:1 450. 866 327 d mo ts 24.17) 13.344) 84.71 513 659 (4 54/42 16.8 1 4 16.4)512 ) 32 (4.2) 4 (336) 53.5 1414.21 122.69 (434.20 / 271.31 199.86 270:09 420.541 192.094 17.06) 7.766 44.09121298.939 21.99 1343.03) 645.58 SUM S. S F = i'lat tand' Ewcost-of E wsina 20x21.gg + tan 290 x 1298.939 8= 20 kalm3 c = 20 kalma 645.58 $1=290 IF = 1.796 F = 1.796 ] Ang