Saturated unit weight of the soil from the surface to 10 m depth is measured
18k(N)/(m^(3))(GWL at the surface). Consolidation test results are given in the graph below for the sample taken at 5 m depth. Compute the consolidation settlement if the stress increase at the mid-height of the clay layer from the structure built on this profile is 70 kPa .
c_(0)=2,8
\sigma _(0)^(')=5\times 18=40,95kPa
\Delta \sigma +\sigma _(0)^(')=114,95>\sigma _(c)
C_(c)=(2,65-1,3)/(log((640)/(40)))=1,12
C_(r)=(1.6-1,3)/(log((600)/(5)))=0,14
\sigma =10
S_(\infty )=10\times (0,14)/(3,8)log_(40,95)((50)/(10\times (1,12)/(3,8)lg((114,95)/(50))))
=0,032+1,066
=1,098m