Vane shear tests were conducted in the clay layer. The vane dimensions were 63.5 mm (D) x 127 mm (H). For the test at A, the torque required to cause failure was 0.051 Nm. For the clay, given: liquid limit = 46 and plastic limit = 21. (a) Estimate the undrained cohesion of the clay for use in the design by using Bjerrum's correction. A = 1.7 – 0.54 log[PI(%)]
Vane shear tests were conducted in the clay layer. The vane dimensions were 63.5 mm (D) x 127 mm (H). For the test at A, the torque required to cause failure was 0.051 Nm. For the clay, given: liquid limit = 46 and plastic limit = 21. (a) Estimate the undrained cohesion of the clay for use in the design by using Bjerrum's correction. A = 1.7 – 0.54 log[PI(%)]
Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN:9781337705028
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter3: Natural Soil Deposits And Subsoil Exploration
Section: Chapter Questions
Problem 3.17P
Related questions
Question
![Vane shear tests were conducted in the clay layer. The vane dimensions were 63.5 mm
(D) x 127 mm (H). For the test at A, the torque required to cause failure was 0.051 Nm. For
the clay, given: liquid limit = 46 and plastic limit = 21.
(a) Estimate the undrained cohesion of the clay for use in the design by using Bjerrum's
correction. A = 1.7 – 0.54 log[PI(%)]
(b) Estimate the overconsolidation ratio of the clay. Use Eqations below.
Cu(field)
B-
σο
B = 22[PI(%)]-048
OCR
%3|
Dry sand
y = 16.5 kN/m³
·1.5 m
Groundwater
table
Sand
1.5 m
Ysat = 19 kN/m³
N60
5
:1.5 m
• 8
Clay
= 16.8 kN/m³
1.5 m
Ysat
* A • 8
1.5 m
• 9
1.5 m
10
Sand](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F875fea23-a59d-4b3a-8cfc-19fd28149b1b%2Fd22de903-cec4-4d1f-939a-afeead764dc7%2Fkt9xyz_processed.png&w=3840&q=75)
Transcribed Image Text:Vane shear tests were conducted in the clay layer. The vane dimensions were 63.5 mm
(D) x 127 mm (H). For the test at A, the torque required to cause failure was 0.051 Nm. For
the clay, given: liquid limit = 46 and plastic limit = 21.
(a) Estimate the undrained cohesion of the clay for use in the design by using Bjerrum's
correction. A = 1.7 – 0.54 log[PI(%)]
(b) Estimate the overconsolidation ratio of the clay. Use Eqations below.
Cu(field)
B-
σο
B = 22[PI(%)]-048
OCR
%3|
Dry sand
y = 16.5 kN/m³
·1.5 m
Groundwater
table
Sand
1.5 m
Ysat = 19 kN/m³
N60
5
:1.5 m
• 8
Clay
= 16.8 kN/m³
1.5 m
Ysat
* A • 8
1.5 m
• 9
1.5 m
10
Sand
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
![Principles of Foundation Engineering (MindTap Cou…](https://www.bartleby.com/isbn_cover_images/9781337705028/9781337705028_smallCoverImage.gif)
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
![Fundamentals of Geotechnical Engineering (MindTap…](https://www.bartleby.com/isbn_cover_images/9781305635180/9781305635180_smallCoverImage.gif)
Fundamentals of Geotechnical Engineering (MindTap…
Civil Engineering
ISBN:
9781305635180
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
![Principles of Geotechnical Engineering (MindTap C…](https://www.bartleby.com/isbn_cover_images/9781305970939/9781305970939_smallCoverImage.gif)
Principles of Geotechnical Engineering (MindTap C…
Civil Engineering
ISBN:
9781305970939
Author:
Braja M. Das, Khaled Sobhan
Publisher:
Cengage Learning
![Principles of Foundation Engineering (MindTap Cou…](https://www.bartleby.com/isbn_cover_images/9781337705028/9781337705028_smallCoverImage.gif)
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
![Fundamentals of Geotechnical Engineering (MindTap…](https://www.bartleby.com/isbn_cover_images/9781305635180/9781305635180_smallCoverImage.gif)
Fundamentals of Geotechnical Engineering (MindTap…
Civil Engineering
ISBN:
9781305635180
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
![Principles of Geotechnical Engineering (MindTap C…](https://www.bartleby.com/isbn_cover_images/9781305970939/9781305970939_smallCoverImage.gif)
Principles of Geotechnical Engineering (MindTap C…
Civil Engineering
ISBN:
9781305970939
Author:
Braja M. Das, Khaled Sobhan
Publisher:
Cengage Learning