Refer to Figure 11.48. A square foundation, 2.5 × 2.5 m in size, supports a col- umn load of 478 kN. The soil characteristics are given in the figure. Field moni- toring indicated that the foundation settlement was 46 mm at the end of 2 years. a. Estimate the average stress increase in the clay layer due to the applied load. b. Estimate the primary consolidation settlement. c. What is the degree of consolidation after 2 years? d. Estimate the coefficient of consolidation for the pressure range. e. Estimate the settlement in 3 years. 478 kN 2.5 m x 2.5 m 1.5 m Ya - 16 kN/m³ GWT 1.75 m Yut - 18.8 kN/m3 19% G, = 2.71 LL = 37 o'. = 65 kN/m² C, = 1/5C. 3.5m Sand | Clay Figure 11.48
Refer to Figure 11.48. A square foundation, 2.5 × 2.5 m in size, supports a col- umn load of 478 kN. The soil characteristics are given in the figure. Field moni- toring indicated that the foundation settlement was 46 mm at the end of 2 years. a. Estimate the average stress increase in the clay layer due to the applied load. b. Estimate the primary consolidation settlement. c. What is the degree of consolidation after 2 years? d. Estimate the coefficient of consolidation for the pressure range. e. Estimate the settlement in 3 years. 478 kN 2.5 m x 2.5 m 1.5 m Ya - 16 kN/m³ GWT 1.75 m Yut - 18.8 kN/m3 19% G, = 2.71 LL = 37 o'. = 65 kN/m² C, = 1/5C. 3.5m Sand | Clay Figure 11.48
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Refer to Figure 11.48. A square foundation, 2.5 x 2.5 m in size, supports a col-
umn load of 478 kN. The soil characteristics are given in the figure. Field moni-
toring indicated that the foundation settlement was 46 mm at the end of 2 years.
a. Estimate the average stress increase in the clay layer due to the applied load.
b. Estimate the primary consolidation settlement.
c. What is the degree of consolidation after 2 years?
d. Estimate the coefficient of consolidation for the pressure range.
e. Estimate the settlement in 3 years.
478 kN
2.5 m x 2.5 m
1.5 m
Ya = 16 kN/m3
GWT
1.75 m
Yat = 18.8 kN/m3
w = 19%
G, = 2.71
LL = 37
3.5m
o'. = 65 kN/m?
C, = 1/5C.
Sand OClay
Figure 11.48
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