Civil Engineering (CE) Exam > Civil Engineering (CE) Questions > Quick sand condition occurs when:a)The void r...
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Quick sand condition occurs when:
- a)The void ratio of the soil becomes 1.0
- b)The upward seepage pressure in soil becomes zero
- c)The upward seepage pressure in soil becomes equal to the saturated unit weight of the solid
- d)The upward seepage pressure in the soil becomes equal to the submerged unit weight of the soil
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Quick sand condition occurs when:a)The void ratio of the soil becomes ...
Quicksand is a condition and not a soil type. This condition is created in saturated thick layers of loose fine sandy soils when disturbed either due to vibration, such as, from pile driving in the neighborhood, or due to the pressure of flowing water (at the time of heavy pumping in excavation).
Most Upvoted Answer
Quick sand condition occurs when:a)The void ratio of the soil becomes ...
Explanation:
Quick sand condition occurs when the upward seepage pressure in the soil becomes equal to the submerged unit weight of the soil. This can be explained as follows:
Submerged Unit Weight
- The submerged unit weight of soil is defined as the weight per unit volume of soil when it is submerged in water.
- It is given by the equation: γ' = γ/(1+w), where γ is the saturated unit weight of the soil and w is the unit weight of water.
- The value of submerged unit weight is always less than the saturated unit weight of the soil.
Upward Seepage Pressure
- When water flows through soil, it exerts a pressure known as seepage pressure.
- The upward seepage pressure is the pressure exerted by water flowing upwards through the soil.
- The value of upward seepage pressure depends on the pore water pressure and the hydraulic gradient.
Quick Sand Condition
- When the value of upward seepage pressure becomes equal to the submerged unit weight of the soil, the soil loses its shear strength and behaves like a liquid.
- This condition is known as quick sand condition.
- In this condition, the soil particles are completely separated from each other and the soil behaves like a fluid.
- Any object that is placed on quick sand sinks rapidly due to the absence of shear strength in the soil.
Conclusion:
Therefore, option D is the correct answer as quick sand condition occurs when the upward seepage pressure in the soil becomes equal to the submerged unit weight of the soil.
Quick sand condition occurs when the upward seepage pressure in the soil becomes equal to the submerged unit weight of the soil. This can be explained as follows:
Submerged Unit Weight
- The submerged unit weight of soil is defined as the weight per unit volume of soil when it is submerged in water.
- It is given by the equation: γ' = γ/(1+w), where γ is the saturated unit weight of the soil and w is the unit weight of water.
- The value of submerged unit weight is always less than the saturated unit weight of the soil.
Upward Seepage Pressure
- When water flows through soil, it exerts a pressure known as seepage pressure.
- The upward seepage pressure is the pressure exerted by water flowing upwards through the soil.
- The value of upward seepage pressure depends on the pore water pressure and the hydraulic gradient.
Quick Sand Condition
- When the value of upward seepage pressure becomes equal to the submerged unit weight of the soil, the soil loses its shear strength and behaves like a liquid.
- This condition is known as quick sand condition.
- In this condition, the soil particles are completely separated from each other and the soil behaves like a fluid.
- Any object that is placed on quick sand sinks rapidly due to the absence of shear strength in the soil.
Conclusion:
Therefore, option D is the correct answer as quick sand condition occurs when the upward seepage pressure in the soil becomes equal to the submerged unit weight of the soil.
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Quick sand condition occurs when:a)The void ratio of the soil becomes 1.0b)The upward seepage pressure in soil becomes zeroc)The upward seepage pressure in soil becomes equal to the saturated unit weight of the solidd)The upward seepage pressure in the soil becomes equal to the submerged unit weight of the soilCorrect answer is option 'D'. Can you explain this answer?
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Quick sand condition occurs when:a)The void ratio of the soil becomes 1.0b)The upward seepage pressure in soil becomes zeroc)The upward seepage pressure in soil becomes equal to the saturated unit weight of the solidd)The upward seepage pressure in the soil becomes equal to the submerged unit weight of the soilCorrect answer is option 'D'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about Quick sand condition occurs when:a)The void ratio of the soil becomes 1.0b)The upward seepage pressure in soil becomes zeroc)The upward seepage pressure in soil becomes equal to the saturated unit weight of the solidd)The upward seepage pressure in the soil becomes equal to the submerged unit weight of the soilCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Quick sand condition occurs when:a)The void ratio of the soil becomes 1.0b)The upward seepage pressure in soil becomes zeroc)The upward seepage pressure in soil becomes equal to the saturated unit weight of the solidd)The upward seepage pressure in the soil becomes equal to the submerged unit weight of the soilCorrect answer is option 'D'. Can you explain this answer?.
Quick sand condition occurs when:a)The void ratio of the soil becomes 1.0b)The upward seepage pressure in soil becomes zeroc)The upward seepage pressure in soil becomes equal to the saturated unit weight of the solidd)The upward seepage pressure in the soil becomes equal to the submerged unit weight of the soilCorrect answer is option 'D'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about Quick sand condition occurs when:a)The void ratio of the soil becomes 1.0b)The upward seepage pressure in soil becomes zeroc)The upward seepage pressure in soil becomes equal to the saturated unit weight of the solidd)The upward seepage pressure in the soil becomes equal to the submerged unit weight of the soilCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Quick sand condition occurs when:a)The void ratio of the soil becomes 1.0b)The upward seepage pressure in soil becomes zeroc)The upward seepage pressure in soil becomes equal to the saturated unit weight of the solidd)The upward seepage pressure in the soil becomes equal to the submerged unit weight of the soilCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Quick sand condition occurs when:a)The void ratio of the soil becomes 1.0b)The upward seepage pressure in soil becomes zeroc)The upward seepage pressure in soil becomes equal to the saturated unit weight of the solidd)The upward seepage pressure in the soil becomes equal to the submerged unit weight of the soilCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Civil Engineering (CE).
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Quick sand condition occurs when:a)The void ratio of the soil becomes 1.0b)The upward seepage pressure in soil becomes zeroc)The upward seepage pressure in soil becomes equal to the saturated unit weight of the solidd)The upward seepage pressure in the soil becomes equal to the submerged unit weight of the soilCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Quick sand condition occurs when:a)The void ratio of the soil becomes 1.0b)The upward seepage pressure in soil becomes zeroc)The upward seepage pressure in soil becomes equal to the saturated unit weight of the solidd)The upward seepage pressure in the soil becomes equal to the submerged unit weight of the soilCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Quick sand condition occurs when:a)The void ratio of the soil becomes 1.0b)The upward seepage pressure in soil becomes zeroc)The upward seepage pressure in soil becomes equal to the saturated unit weight of the solidd)The upward seepage pressure in the soil becomes equal to the submerged unit weight of the soilCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Quick sand condition occurs when:a)The void ratio of the soil becomes 1.0b)The upward seepage pressure in soil becomes zeroc)The upward seepage pressure in soil becomes equal to the saturated unit weight of the solidd)The upward seepage pressure in the soil becomes equal to the submerged unit weight of the soilCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Civil Engineering (CE) tests.
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