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Base failure of a finite slope occurs when the soil _______
- a)below the toe is relatively soft and weak
- b)is purely cohesive
- c)is cohesionless
- d)above the toe is relatively soft and weak
Correct answer is option 'A'. Can you explain this answer?
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Base failure of a finite slope occurs when the soil _______a)below the...
Explanation: Stability analysis of Finite Slope: (i) If the slope is of finite extend bounded by top and bottom surfaces, then it is termed as finite slope. (ii) Failure of finite slope takes places due to rotation and failure plane is either circular or spiral. (iii) Finite slope may have any of the following mode of shear failure. Slope failure Base failure Slope failure: Face Failure: Failure surface passes through slope above the toe. This type of failure takes places in case of steep slope, soil mass near the toe is rigid or stringer in comparison to soil mass above the toe. Toe Failure: It is the most common mode of failure of finite slope in which failure surface passes through the toe. This failure also occur in steel slope when soil mass is homogenous above and below the toe. Base Failure: Failure surface passes below the toe. This type of failure takes place when soil mass below the toe is soft and weak in comparison to soil mass above the toe.
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Base failure of a finite slope occurs when the soil _______a)below the...
Base failure of a finite slope occurs when the soil below the toe is relatively soft and weak. This means that the soil at the base of the slope is unable to support the weight of the slope and fails, resulting in slope instability and potential collapse.
There are several factors that contribute to base failure of a finite slope:
1. Soil Strength: The strength of the soil plays a crucial role in determining the stability of a slope. If the soil below the toe is relatively soft and weak, it may not be able to withstand the weight of the slope, leading to base failure.
2. Cohesion: Cohesion is the internal attraction between soil particles. If the soil below the toe is purely cohesive, it means that it lacks cohesionless particles such as sand or gravel. Cohesive soils, such as clay, have a tendency to undergo internal shearing when subjected to stress. This can result in base failure of the slope.
3. Cohesionless Soil: On the other hand, if the soil below the toe is cohesionless, it means that it lacks cohesive particles such as clay. Cohesionless soils, such as sand or gravel, rely on friction between particles to provide stability. However, if the soil is relatively soft and weak, it may not have sufficient frictional resistance to prevent base failure.
4. Weight of the Slope: The weight of the slope itself exerts pressure on the underlying soil. If the weight of the slope exceeds the bearing capacity of the soil below the toe, base failure can occur.
In summary, base failure of a finite slope occurs when the soil below the toe is relatively soft and weak. This can be due to factors such as low soil strength, lack of cohesion or excessive weight of the slope. It is important to consider these factors during slope stability analysis and design to prevent base failure and ensure the safety of structures and people in the vicinity of the slope.
There are several factors that contribute to base failure of a finite slope:
1. Soil Strength: The strength of the soil plays a crucial role in determining the stability of a slope. If the soil below the toe is relatively soft and weak, it may not be able to withstand the weight of the slope, leading to base failure.
2. Cohesion: Cohesion is the internal attraction between soil particles. If the soil below the toe is purely cohesive, it means that it lacks cohesionless particles such as sand or gravel. Cohesive soils, such as clay, have a tendency to undergo internal shearing when subjected to stress. This can result in base failure of the slope.
3. Cohesionless Soil: On the other hand, if the soil below the toe is cohesionless, it means that it lacks cohesive particles such as clay. Cohesionless soils, such as sand or gravel, rely on friction between particles to provide stability. However, if the soil is relatively soft and weak, it may not have sufficient frictional resistance to prevent base failure.
4. Weight of the Slope: The weight of the slope itself exerts pressure on the underlying soil. If the weight of the slope exceeds the bearing capacity of the soil below the toe, base failure can occur.
In summary, base failure of a finite slope occurs when the soil below the toe is relatively soft and weak. This can be due to factors such as low soil strength, lack of cohesion or excessive weight of the slope. It is important to consider these factors during slope stability analysis and design to prevent base failure and ensure the safety of structures and people in the vicinity of the slope.
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Base failure of a finite slope occurs when the soil _______a)below the toe is relatively soft and weakb)is purely cohesivec)is cohesionlessd)above the toe is relatively soft and weakCorrect answer is option 'A'. Can you explain this answer?
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