2. A borehole at a site reveals the soil profile shown. Assume Gs = 2.70 for all soil types. a. What is the unit weight of the soil in layer 1 in kN/m³? b. What is the effective stress at a depth of 2m below the ground surface, in kPa? c. What is the effective stress at a depth of 20.6m below the ground surface, in kPa? Elevation (m) Very fine wet sand with sit 5%, S = 40% %3D Layer 1 2.0 Fine sand saturated by capillary action Layer 2 3.0 - Fine sand, w = 12% Layer 3 5.4 Soft blue clay, w = 28% Layer 4 20.6
2. A borehole at a site reveals the soil profile shown. Assume Gs = 2.70 for all soil types. a. What is the unit weight of the soil in layer 1 in kN/m³? b. What is the effective stress at a depth of 2m below the ground surface, in kPa? c. What is the effective stress at a depth of 20.6m below the ground surface, in kPa? Elevation (m) Very fine wet sand with sit 5%, S = 40% %3D Layer 1 2.0 Fine sand saturated by capillary action Layer 2 3.0 - Fine sand, w = 12% Layer 3 5.4 Soft blue clay, w = 28% Layer 4 20.6
Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter9: Consolidation
Section: Chapter Questions
Problem 9.20CTP
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Question
![2. A borehole at a site reveals the soil profile shown. Assume Gs = 2.70 for all soil types.
a. What is the unit weight of the soil in layer 1 in kN/m³?
b. What is the effective stress at a depth of 2m below the ground surface, in kPa?
c. What is the effective stress at a depth of 20.6m below the ground surface, in kPa?
Elevation (m)
Very fine wet sand with silt
5%, S = 40%
Layer 1
2.0
Fine sand saturated by
capillary action
Layer 2
3.0
Fine sand, w = 12%
Layer 3
5.4
Layer 4
Soft blue clay, w = 28%
20.6](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F59fef605-66f3-484c-966a-5256631a9a27%2Ffed67617-3b2f-43c4-b719-42c749bd3328%2Fuawfp19_processed.png&w=3840&q=75)
Transcribed Image Text:2. A borehole at a site reveals the soil profile shown. Assume Gs = 2.70 for all soil types.
a. What is the unit weight of the soil in layer 1 in kN/m³?
b. What is the effective stress at a depth of 2m below the ground surface, in kPa?
c. What is the effective stress at a depth of 20.6m below the ground surface, in kPa?
Elevation (m)
Very fine wet sand with silt
5%, S = 40%
Layer 1
2.0
Fine sand saturated by
capillary action
Layer 2
3.0
Fine sand, w = 12%
Layer 3
5.4
Layer 4
Soft blue clay, w = 28%
20.6
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