In the soil profile shown, the clay layer is normally consolidated and the ground water location maybe assumed to remain constant. The raft foundation is 15 m x 15 m with a uniform loading of 192 kPa. a) Compute the initial effective stress at the mid-point of clay layer. b) Compute the change in stress at the mid-point of the clay layer if it has an influence factor of 0.90. c) Compute the approximate settlement due to placement of the raft foundation.
In the soil profile shown, the clay layer is normally consolidated and the ground water location maybe assumed to remain constant. The raft foundation is 15 m x 15 m with a uniform loading of 192 kPa. a) Compute the initial effective stress at the mid-point of clay layer. b) Compute the change in stress at the mid-point of the clay layer if it has an influence factor of 0.90. c) Compute the approximate settlement due to placement of the raft foundation.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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In the soil profile shown, the clay layer is normally consolidated and the ground water location maybe assumed to remain constant. The raft foundation is 15 m x 15 m with a uniform loading of 192 kPa. a) Compute the initial effective stress at the mid-point of clay layer. b) Compute the change in stress at the mid-point of the clay layer if it has an influence factor of 0.90. c) Compute the approximate settlement due to placement of the raft foundation.
Transcribed Image Text:4.5 m
Silty sand Va = 17 kN/m³
w = 8.2 %
1.5 m
1.5 m
w = 16.1 %%
Clay
la = 18.6 kN/m³
w = 15.3 %
G, = 2.68
C = 0.41
3 m
Poorly graded gravel
15 m
= 20.7 kN/m³
Rock
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