Samples have been obtained from both soil strata shown in the figure below. A series of shear strength tests were then performed on both samples and plotted in diagrams below. The c' and o' values obtained from these diagrams are shown in the figure below. Using this data, compute the shear strength on the horizontal and vertical planes at points 4, B, and C. Solution: Sand and gravels 3.0 m y =17.0 WT 1.1 m Sandy sit (ML) 5.0 m kN ア=17.5 4.9 m c =10 kPa Clay g'= 28 K=0,54 •B Idealized Linear Fimction C. 0.1 m Medium grained sand (SW) ア=180V c=0 g'=37 K=0.80 Lab test results Range of a' in the field

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