Q. What is the primary cause of bearing capacity failure in saturated soils?
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A.
Shear strength reduction
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B.
Increased pore water pressure
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C.
Soil consolidation
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D.
Soil erosion
Solution
In saturated soils, increased pore water pressure reduces effective stress, leading to bearing capacity failure.
Correct Answer:
B
— Increased pore water pressure
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Q. What is the role of soil cohesion in bearing capacity?
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A.
It increases the bearing capacity
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B.
It decreases the bearing capacity
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C.
It has no effect
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D.
It only affects shallow foundations
Solution
Soil cohesion contributes positively to the bearing capacity by providing additional resistance to shear failure.
Correct Answer:
A
— It increases the bearing capacity
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Q. What is the typical value of the factor of safety used in bearing capacity calculations?
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A.
1.0
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B.
1.5
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C.
2.0
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D.
3.0
Solution
A typical factor of safety used in bearing capacity calculations is 1.5, ensuring a margin of safety against failure.
Correct Answer:
B
— 1.5
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Q. Which of the following is NOT a type of bearing capacity failure?
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A.
General shear failure
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B.
Local shear failure
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C.
Punching shear failure
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D.
Elastic shear failure
Solution
Elastic shear failure is not recognized as a type of bearing capacity failure; the others are common types.
Correct Answer:
D
— Elastic shear failure
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