Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN: 9781337705028
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 7, Problem 7.17P
To determine
Find the cohesion of the specimen.
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A sandstone rock specimen has quc= 50 MN/m2 and ∅' =35°. Find c'.
this is a rock mechanics class
1. Triaxial compression tests are done on quartzite rocks, the results are shown below.
(0₁+03)/2 -964.25 14500 19575 23200 29000 43210 63075 psi
(01-03)/2 964.25 14500 18850 21750 26100 35960 48575 psi
Comment on the applicability of each of the Mohr-Coulomb, Griffith, and Hoek-Brown criteria for the
testing results.
Chapter 7 Solutions
Principles of Foundation Engineering (MindTap Course List)
Ch. 7 - A 7.5 ft wide rough continuous foundation is...Ch. 7 - In Problem 7.1, if there was no bedrock present...Ch. 7 - A 1.5 m × 2.0 m rectangular foundation is placed...Ch. 7 - In Problem 7.3, if no bedrock was present for at...Ch. 7 - Prob. 7.6PCh. 7 - Redo Problem 7.6 using Vesic’s (1975) solution...Ch. 7 - Prob. 7.8PCh. 7 - Prob. 7.9PCh. 7 - A continuous foundation having a width of 1.5 m is...Ch. 7 - A 2 m wide continuous foundation is to be placed...
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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.Similar questions
- Problems 1. In a series of triaxial compression tests on a sandstone, the following repre- sent the stresses at peak load conditions: Test 1 2 3 4 σ3 (MPa) 1.0 5.0 9.5 15.0 σ₁ (MPa) 9.2 28.0 48.7 74.0 Determine values of S; and that best fit the data. 2. The initial state of stress at a point in the ground, in sandstone of Problem 1, is σ3 = 1300 psi σ₁ = 5000 psi The pore water pressure (p.) will be raised by the construction of a reservoir. What value of p will cause fracture of the sandstone in situ (assume fracture occurs at peak stress). 3. For the rock of Problems 1 and 2, what is the value of the principal stress ratio (03/0₁) above which "failure" cannot occur?arrow_forwardDetermine shear strength of clay having value of cohesion 31 KPa Normal stress 100 KPa and angle of internal is 31 degreearrow_forwardSolve itarrow_forward
- 1. In a series of triaxial compression tests on a sandstone, the following repre- sent the stresses at peak load conditions: Test o3(MPa) o (MPa) 1 1.0 5.0 9.5 15.0 9.2 28.0 3 48.7 4 74.0 Determine values of S; and o that best fit the data.arrow_forwardDescribe brittle and dilative behaviour of rock. Show both behaviours with typical stress-strain curves.arrow_forwardPlease correct solutionarrow_forward
- Q10 Please provide justified answer asap to get a upvotearrow_forward16. A rock unit has a unit cohesion of 400 psf and an an- gle of internal friction of 35°. When the normal stress is 1600 psf, what is the shear strength of the rock?arrow_forward7. Shear strength of intact rocks determined by 8. Deformation parameters Test. are andarrow_forward
- answer please asaparrow_forwardQ2 – A rock sample 102 mm in diameter is subjected to axial load up to failure at 140 kN ,what is the compressive strength . how you classify this rock.arrow_forwardA butt weld is set on the cross section of an I-shaped beam. The re are bending moment M ard sheao forne V at the speicing position, where Ma || 20 KN m and v 374KN The beam is made of Q355 b steel and semi- automatic weld is used with welding rod E50. The des ign value of the weld tensile to Strength f" is 260 N/mnm?. c heek whethe please The stregth of the butt weld is safe by eloulation. ET 3.arrow_forward
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