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Q2\ Answer T for true statements or F for false ones: 1. The Griffith criterion is seen to have a steeper slope at high confining pressures 2. In a Mohr t-ò plot the Tresca criterion appears simply as a straight horizontal line. 3. Pore collapse is usually caused by excessive hydrostatic stress.

Q2\ Answer T for true statements or F for false ones: 1. The Griffith criterion is seen to have a steeper slope at high confining pressures 2. In a Mohr t-ò plot the Tresca criterion appears simply as a straight horizontal line. 3. Pore collapse is usually caused by excessive hydrostatic stress.

Principles of Foundation Engineering (MindTap Course List)
Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN:9781337705028
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter8: Vertical Stress Increase In Soil
Section: Chapter Questions
Problem 8.6P: Two line loads q1 and q2 of infinite lengths are acting on top of an elastic medium, as shown in...
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Q2\ Answer T for true statements or F for false ones: 1. The Griffith criterion is seen to have a steeper slope at high confining pressures 2. In a Mohr t-ờ plot the Tresca criterion appears simply as a straight horizontal line. 3. Pore collapse is usually caused by excessive hydrostatic stress. 4. Biot hypothesized that the shear modulus is influenced by the presence of the 5. Pure shear failure depends on the intermediate principle stress. 6. Tensile failure usually occurs when the greatest effective principal stress surpasses the formation rock tensile strength. 7. Failure plane is always inclined at an angle larger than 45° to the direction of oi 8. Unloading path is different from the loading path in perfectly elastic materials. 9. The orientation of the failure plane is independent of the confining stress 10. The modified Griffith criterion is based on the idea that the microcracks will close at sufficiently high pressure levels. pore fluid.
Transcribed Image Text:Q2\ Answer T for true statements or F for false ones: 1. The Griffith criterion is seen to have a steeper slope at high confining pressures 2. In a Mohr t-ờ plot the Tresca criterion appears simply as a straight horizontal line. 3. Pore collapse is usually caused by excessive hydrostatic stress. 4. Biot hypothesized that the shear modulus is influenced by the presence of the 5. Pure shear failure depends on the intermediate principle stress. 6. Tensile failure usually occurs when the greatest effective principal stress surpasses the formation rock tensile strength. 7. Failure plane is always inclined at an angle larger than 45° to the direction of oi 8. Unloading path is different from the loading path in perfectly elastic materials. 9. The orientation of the failure plane is independent of the confining stress 10. The modified Griffith criterion is based on the idea that the microcracks will close at sufficiently high pressure levels. pore fluid.
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