Refer to Figure P3.2. Vane shear tests were conducted in the clay layer. The vane (tapered) dimensions were 63.5 mm (d) X 127 mm (h), ig = ir = 45° (see Figure 3.23). For the test at A, the torque required to cause failure was 51 N m. For the clay, given: liquid limit = 46 and plastic limit = 21. Estimate the undrained cohesion of the clay for use in the design by using Bjerrum's relationship [Eq. (3.40a)]. Culfield) OCR = B- (3.42) where o, = effective overburden pressure. The magnitudes of ß developed by various investigators are given below. Mayne and Mitchell (1988): B = 22[PI(%)]-0,48 (3.43)
Refer to Figure P3.2. Vane shear tests were conducted in the clay layer. The vane (tapered) dimensions were 63.5 mm (d) X 127 mm (h), ig = ir = 45° (see Figure 3.23). For the test at A, the torque required to cause failure was 51 N m. For the clay, given: liquid limit = 46 and plastic limit = 21. Estimate the undrained cohesion of the clay for use in the design by using Bjerrum's relationship [Eq. (3.40a)]. Culfield) OCR = B- (3.42) where o, = effective overburden pressure. The magnitudes of ß developed by various investigators are given below. Mayne and Mitchell (1988): B = 22[PI(%)]-0,48 (3.43)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Refer to Problem 3.15. Estimate the overconsolidation ratio of the clay. Use Eqs. (3.42) and (3.43).
![Refer to Figure P3.2. Vane shear tests were conducted in the clay layer. The
vane (tapered) dimensions were 63.5 mm (d) X 127 mm (h), ig = ir = 45° (see
Figure 3.23). For the test at A, the torque required to cause failure was 51 N m.
For the clay, given: liquid limit = 46 and plastic limit = 21. Estimate the undrained
cohesion of the clay for use in the design by using Bjerrum's relationship
[Eq. (3.40a)].](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F71c927ea-e574-4cab-83ed-fe543f0ac29d%2F15ecae9b-3c47-4504-8ba8-bf73005da996%2Fd0md8ae_processed.png&w=3840&q=75)
Transcribed Image Text:Refer to Figure P3.2. Vane shear tests were conducted in the clay layer. The
vane (tapered) dimensions were 63.5 mm (d) X 127 mm (h), ig = ir = 45° (see
Figure 3.23). For the test at A, the torque required to cause failure was 51 N m.
For the clay, given: liquid limit = 46 and plastic limit = 21. Estimate the undrained
cohesion of the clay for use in the design by using Bjerrum's relationship
[Eq. (3.40a)].
![Culfield)
OCR = B-
(3.42)
where o, = effective overburden pressure.
The magnitudes of ß developed by various investigators are given below.
Mayne and Mitchell (1988):
B = 22[PI(%)]-0,48
(3.43)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F71c927ea-e574-4cab-83ed-fe543f0ac29d%2F15ecae9b-3c47-4504-8ba8-bf73005da996%2Fe7j2a3w_processed.png&w=3840&q=75)
Transcribed Image Text:Culfield)
OCR = B-
(3.42)
where o, = effective overburden pressure.
The magnitudes of ß developed by various investigators are given below.
Mayne and Mitchell (1988):
B = 22[PI(%)]-0,48
(3.43)
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