Homework Help is Here – Start Your Trial Now!
Engineering
Civil Engineering
A specimen of normally consolidated clay was consolidated under a chamber confining pressure of 280kpa for a drained test by how much does the axial stress have to be reduced to cause failure by axial extension?

A specimen of normally consolidated clay was consolidated under a chamber confining pressure of 280kpa for a drained test by how much does the axial stress have to be reduced to cause failure by axial extension?

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question
100%

A specimen of normally consolidated clay was consolidated under a chamber confining pressure of 280kpa for a drained test by how much does the axial stress have to be reduced to cause failure by axial extension?

CHOPSTICKS 470 Shear strength of soils Determine c and o. Also determine the magnitudes of the normal and shear stress on the planes of failure for the two specimens used in the tests. 7.2 A specimen of normally consolidated clay ( = 28°) was consolidated under a chamber-confining pressure of 280 kN/m². For a drained test, by how much does the axial stress have to be reduced to cause failure by axial extension? 7.3 A normally consolidated clay specimen ( = 31°) was consolidated under a chamber-confining pressure of 132 kN/m². Failure of the specimen was caused by an added axial stress of 158.1 kN/m² in an undrained condition. Determine &cu, Af, and the pore water pressure in the specimen at failure. 7.4 A normally consolidated clay is consolidated under a triaxial chamber con- fining pressure of 495 kN/m² and = 29°. In a Rendulic-type diagram, draw the stress path the specimen would follow if sheared to failure in a drained condition in the following ways: b (a) By increasing the axial stress and keeping the radial stress constant. (b) By reducing the axial stress and keeping the axial stress constant. (c) By increasing the axial stress and keeping the radial stress such that o₂ + 2o = const. (d) By reducing the axial stress and keeping the radial stress constant. (e) By increasing the radial stress and keeping the axial stress constant. (By reducing the axial stress and increasing the radial stress such that o+20 =const. 7.5 The results of a consolidated undrained test, in which o3 = 392 kN/m², on a normally consolidated clay are given next: Axial strain (%) Ao(kN/m²) u (kN/m²) 0 0 0.5 99 0.75 120 | 132 1.3 147 161 170 173 175 2 3 4 45 0 156 196 226 235 250 245 240 235 01 (000,005) 008 000
Transcribed Image Text:CHOPSTICKS 470 Shear strength of soils Determine c and o. Also determine the magnitudes of the normal and shear stress on the planes of failure for the two specimens used in the tests. 7.2 A specimen of normally consolidated clay ( = 28°) was consolidated under a chamber-confining pressure of 280 kN/m². For a drained test, by how much does the axial stress have to be reduced to cause failure by axial extension? 7.3 A normally consolidated clay specimen ( = 31°) was consolidated under a chamber-confining pressure of 132 kN/m². Failure of the specimen was caused by an added axial stress of 158.1 kN/m² in an undrained condition. Determine &cu, Af, and the pore water pressure in the specimen at failure. 7.4 A normally consolidated clay is consolidated under a triaxial chamber con- fining pressure of 495 kN/m² and = 29°. In a Rendulic-type diagram, draw the stress path the specimen would follow if sheared to failure in a drained condition in the following ways: b (a) By increasing the axial stress and keeping the radial stress constant. (b) By reducing the axial stress and keeping the axial stress constant. (c) By increasing the axial stress and keeping the radial stress such that o₂ + 2o = const. (d) By reducing the axial stress and keeping the radial stress constant. (e) By increasing the radial stress and keeping the axial stress constant. (By reducing the axial stress and increasing the radial stress such that o+20 =const. 7.5 The results of a consolidated undrained test, in which o3 = 392 kN/m², on a normally consolidated clay are given next: Axial strain (%) Ao(kN/m²) u (kN/m²) 0 0 0.5 99 0.75 120 | 132 1.3 147 161 170 173 175 2 3 4 45 0 156 196 226 235 250 245 240 235 01 (000,005) 008 000
Expert Solution
steps

Step by step

Solved in 3 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Test for determination of shear strength
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
Structural Analysis
Structural Analysis
Civil Engineering
ISBN:
9781337630931
Author:
KASSIMALI, Aslam.
Publisher:
Cengage,
Structural Analysis (10th Edition)
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Sustainable Energy
Sustainable Energy
Civil Engineering
ISBN:
9781337551663
Author:
DUNLAP, Richard A.
Publisher:
Cengage,
Traffic and Highway Engineering
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS