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50- 50 100 MPa

50- 50 100 MPa

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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50- 30 100 MPa 1. Which point is deeper in the crust, A or B? 2. What is the mean stress at pointA? 3. What is the differential stress at point B? 4. What is the value of o3 at point A? 5. Is o3 at point A tensile or compressive? Why? 6. What is the orientation, relative to the principal axes, of the fractures that form at point B? 7. Are these fractures at B shear or tensile fractures? Why? 8. If The pore fluid pressure a(A s increased until the rock hydraulically fractures, show on the figure at top right the orientation of these fractures with the sense of movement that they would undergo under the given stress. 9. Calculate the critical shear stress to induce onset of fractures at point B. 10. Calculate the normal stress at point A then compare it to the shear stress at point B. Page2
Transcribed Image Text:50- 30 100 MPa 1. Which point is deeper in the crust, A or B? 2. What is the mean stress at pointA? 3. What is the differential stress at point B? 4. What is the value of o3 at point A? 5. Is o3 at point A tensile or compressive? Why? 6. What is the orientation, relative to the principal axes, of the fractures that form at point B? 7. Are these fractures at B shear or tensile fractures? Why? 8. If The pore fluid pressure a(A s increased until the rock hydraulically fractures, show on the figure at top right the orientation of these fractures with the sense of movement that they would undergo under the given stress. 9. Calculate the critical shear stress to induce onset of fractures at point B. 10. Calculate the normal stress at point A then compare it to the shear stress at point B. Page2
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