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ESE CE: Soil Mechanics & Foundation Engineering Champion Quiz 5
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Question 1
If the coefficient of active earth pressure is 1/3, then what is the value of the coefficient of pressive earth pressure?
Question 2
Assertion (A):Rankine’s earth pressure theory should not be used for concrete retaining walls and Coulomb’s theory should not be used for estimating passive earth pressures.
Reason (R): Rankine’s assumed that the retaining wall has a vertical back and Coulomb assumed that the resultant reaction due to earth pressure acts at one-third the height of the wall.
Reason (R): Rankine’s assumed that the retaining wall has a vertical back and Coulomb assumed that the resultant reaction due to earth pressure acts at one-third the height of the wall.
Question 3
Assertion (A): Basement walls and bridge abutments are usually designed for earth pressure at rest
Reason (R): these are usually not restrained by the floor slab and by less than passive earth pressure
Reason (R): these are usually not restrained by the floor slab and by less than passive earth pressure
Question 4
Statement (I): For a cantilever retaining wall, Rankine’s theory of earth pressure may be used.
Statement (II): For a retaining wall with smooth vertical back, Rankine’s theory is appropriate.
Statement (II): For a retaining wall with smooth vertical back, Rankine’s theory is appropriate.
Question 5
Consider the following statements:
1). Permeability of a soil decreases as the effective stress acting on the soil increases.
2). The presence of organic matter in the soil increases its permeability.
3). Entrapped air decreases the permeability of a soil
Which of these statements is/are correct?
1). Permeability of a soil decreases as the effective stress acting on the soil increases.
2). The presence of organic matter in the soil increases its permeability.
3). Entrapped air decreases the permeability of a soil
Which of these statements is/are correct?
Question 6
A soil has discharge velocity of 5 ×10-7 m/s and a void ratio of 0.5, its seepage velocity will be
Question 7
Consider the following statements:
1). Organic matter increases the permeability of a soil.
2). Entrapped air decreases the permeability of a soil.
Which of these statements is/are correct?
1). Organic matter increases the permeability of a soil.
2). Entrapped air decreases the permeability of a soil.
Which of these statements is/are correct?
Question 8
The field density and field moisture content of a soil can be determined by
1). Core cutter method
2). Sand replacement method
3). Proctor compaction test
4). Modified proctor compaction test
1). Core cutter method
2). Sand replacement method
3). Proctor compaction test
4). Modified proctor compaction test
Question 9
For a sandy soil with grains spherical in shape and uniform in size, what is the theoretical void ratio
Question 10
A clay sample, originally 26 mm thick at a void ratio of 1.22, was subjected to a compressive load. After the clay sample was completely consolidated, its thickness was measured to be 24 mm. what is the final void ratio?
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Jul 19ESE & GATE CE