Bearing Capacity of Soils

Description: Test your knowledge on the concept of Bearing Capacity of Soils, a crucial aspect of Geotechnical Engineering.
Number of Questions: 14
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The ultimate bearing capacity of a soil is the maximum average pressure that can be applied to the soil without causing a shear failure. What is the most common method used to determine the ultimate bearing capacity?

  1. Standard Penetration Test (SPT)

  2. Cone Penetration Test (CPT)

  3. Plate Load Test

  4. Unconfined Compression Test


Correct Option: C
Explanation:

The Plate Load Test is the most widely used method to determine the ultimate bearing capacity of a soil. It involves applying a controlled load to a plate placed on the soil surface and measuring the resulting settlement.

In Terzaghi's bearing capacity theory, the bearing capacity of a soil is influenced by three main factors. Which of the following is NOT one of these factors?

  1. Cohesion of the soil

  2. Internal friction angle of the soil

  3. Depth of the foundation

  4. Unit weight of the soil


Correct Option: C
Explanation:

In Terzaghi's bearing capacity theory, the bearing capacity of a soil is influenced by the cohesion of the soil, the internal friction angle of the soil, and the unit weight of the soil. The depth of the foundation is not a direct factor considered in this theory.

The Meyerhof bearing capacity theory considers the effect of the shape of the foundation on the bearing capacity. What is the shape factor for a circular foundation according to Meyerhof's theory?

  1. 1.0

  2. 1.3

  3. 1.5

  4. 2.0


Correct Option: A
Explanation:

According to Meyerhof's bearing capacity theory, the shape factor for a circular foundation is 1.0. This means that the bearing capacity of a circular foundation is equal to the ultimate bearing capacity of the soil.

The Hansen bearing capacity theory is an extension of Terzaghi's theory that considers the inclination of the applied load. What is the inclination factor for a vertical load according to Hansen's theory?

  1. 0.0

  2. 0.5

  3. 1.0

  4. 1.5


Correct Option: C
Explanation:

According to Hansen's bearing capacity theory, the inclination factor for a vertical load is 1.0. This means that the bearing capacity of a soil under a vertical load is equal to the ultimate bearing capacity of the soil.

The Vesic bearing capacity theory is an extension of Terzaghi's theory that considers the effect of depth on the bearing capacity. What is the depth factor for a shallow foundation according to Vesic's theory?

  1. 0.0

  2. 0.5

  3. 1.0

  4. 1.5


Correct Option: C
Explanation:

According to Vesic's bearing capacity theory, the depth factor for a shallow foundation is 1.0. This means that the bearing capacity of a shallow foundation is equal to the ultimate bearing capacity of the soil.

The Prandtl bearing capacity theory is an extension of Terzaghi's theory that considers the effect of soil density on the bearing capacity. What is the density factor for a loose sand according to Prandtl's theory?

  1. 0.0

  2. 0.5

  3. 1.0

  4. 1.5


Correct Option: B
Explanation:

According to Prandtl's bearing capacity theory, the density factor for a loose sand is 0.5. This means that the bearing capacity of a loose sand is half of the ultimate bearing capacity of the soil.

The Skempton bearing capacity theory is an extension of Terzaghi's theory that considers the effect of pore water pressure on the bearing capacity. What is the pore pressure factor for a saturated clay according to Skempton's theory?

  1. 0.0

  2. 0.5

  3. 1.0

  4. 1.5


Correct Option: C
Explanation:

According to Skempton's bearing capacity theory, the pore pressure factor for a saturated clay is 1.0. This means that the bearing capacity of a saturated clay is equal to the ultimate bearing capacity of the soil.

The Brinch Hansen bearing capacity theory is an extension of Terzaghi's theory that considers the effect of eccentricity on the bearing capacity. What is the eccentricity factor for a centrally loaded foundation according to Brinch Hansen's theory?

  1. 0.0

  2. 0.5

  3. 1.0

  4. 1.5


Correct Option: C
Explanation:

According to Brinch Hansen's bearing capacity theory, the eccentricity factor for a centrally loaded foundation is 1.0. This means that the bearing capacity of a centrally loaded foundation is equal to the ultimate bearing capacity of the soil.

The Meyerhof bearing capacity theory considers the effect of the shape of the foundation on the bearing capacity. What is the shape factor for a strip foundation according to Meyerhof's theory?

  1. 1.0

  2. 1.3

  3. 1.5

  4. 2.0


Correct Option: B
Explanation:

According to Meyerhof's bearing capacity theory, the shape factor for a strip foundation is 1.3. This means that the bearing capacity of a strip foundation is 1.3 times the ultimate bearing capacity of the soil.

The Hansen bearing capacity theory is an extension of Terzaghi's theory that considers the inclination of the applied load. What is the inclination factor for a horizontal load according to Hansen's theory?

  1. 0.0

  2. 0.5

  3. 1.0

  4. 1.5


Correct Option: A
Explanation:

According to Hansen's bearing capacity theory, the inclination factor for a horizontal load is 0.0. This means that the bearing capacity of a soil under a horizontal load is zero.

The Vesic bearing capacity theory is an extension of Terzaghi's theory that considers the effect of depth on the bearing capacity. What is the depth factor for a deep foundation according to Vesic's theory?

  1. 0.0

  2. 0.5

  3. 1.0

  4. 1.5


Correct Option: D
Explanation:

According to Vesic's bearing capacity theory, the depth factor for a deep foundation is 1.5. This means that the bearing capacity of a deep foundation is 1.5 times the ultimate bearing capacity of the soil.

The Prandtl bearing capacity theory is an extension of Terzaghi's theory that considers the effect of soil density on the bearing capacity. What is the density factor for a dense sand according to Prandtl's theory?

  1. 0.0

  2. 0.5

  3. 1.0

  4. 1.5


Correct Option: D
Explanation:

According to Prandtl's bearing capacity theory, the density factor for a dense sand is 1.5. This means that the bearing capacity of a dense sand is 1.5 times the ultimate bearing capacity of the soil.

The Skempton bearing capacity theory is an extension of Terzaghi's theory that considers the effect of pore water pressure on the bearing capacity. What is the pore pressure factor for a partially saturated clay according to Skempton's theory?

  1. 0.0

  2. 0.5

  3. 1.0

  4. 1.5


Correct Option: B
Explanation:

According to Skempton's bearing capacity theory, the pore pressure factor for a partially saturated clay is 0.5. This means that the bearing capacity of a partially saturated clay is half of the ultimate bearing capacity of the soil.

The Brinch Hansen bearing capacity theory is an extension of Terzaghi's theory that considers the effect of eccentricity on the bearing capacity. What is the eccentricity factor for an eccentrically loaded foundation according to Brinch Hansen's theory?

  1. 0.0

  2. 0.5

  3. 1.0

  4. 1.5


Correct Option: B
Explanation:

According to Brinch Hansen's bearing capacity theory, the eccentricity factor for an eccentrically loaded foundation is 0.5. This means that the bearing capacity of an eccentrically loaded foundation is half of the ultimate bearing capacity of the soil.

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