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While designing combined footing, the resultant of the column loads passes, through the center of gravity of the footing slab such that the net soil pressure obtained is-
- a)Parabolic
- b)Trapezoidal
- c)Uniform
- d)Non-uniform
Correct answer is option 'C'. Can you explain this answer?
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While designing combined footing, the resultant of the column loads p...
It is desirable to design combined footing so that the centroid of the footing area coincides with the resultant of the two-column loads. This produces uniform bearing pressure over the entire area and forestalls a tendency for the footing to tilt.
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Hence, the correct option is (C)
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While designing combined footing, the resultant of the column loads p...
Net Soil Pressure in Combined Footing:
In combined footing design, it is essential to ensure that the net soil pressure acting on the footing is uniform to prevent differential settlement. The resultant of the column loads should pass through the center of gravity of the footing slab to achieve this.
Uniform Net Soil Pressure:
- When the resultant of the column loads passes through the center of gravity of the footing slab, the net soil pressure obtained is uniform.
- This means that the pressure exerted on the soil by the combined footing is evenly distributed, reducing the risk of differential settlement.
Advantages of Uniform Net Soil Pressure:
- Uniform net soil pressure helps in preventing excessive settlement of the footing, which can lead to structural instability.
- It ensures that the load is distributed uniformly across the foundation, reducing the risk of localized failure.
Design Considerations:
- Engineers must carefully analyze the column loads and footing dimensions to ensure that the resultant passes through the center of gravity.
- Proper consideration should be given to the soil properties and bearing capacity to determine the suitable footing design.
In conclusion, designing a combined footing with a uniform net soil pressure is crucial for ensuring the stability and durability of the structure. By ensuring that the resultant of the column loads passes through the center of gravity of the footing slab, engineers can mitigate the risk of differential settlement and ensure uniform distribution of load on the soil.
In combined footing design, it is essential to ensure that the net soil pressure acting on the footing is uniform to prevent differential settlement. The resultant of the column loads should pass through the center of gravity of the footing slab to achieve this.
Uniform Net Soil Pressure:
- When the resultant of the column loads passes through the center of gravity of the footing slab, the net soil pressure obtained is uniform.
- This means that the pressure exerted on the soil by the combined footing is evenly distributed, reducing the risk of differential settlement.
Advantages of Uniform Net Soil Pressure:
- Uniform net soil pressure helps in preventing excessive settlement of the footing, which can lead to structural instability.
- It ensures that the load is distributed uniformly across the foundation, reducing the risk of localized failure.
Design Considerations:
- Engineers must carefully analyze the column loads and footing dimensions to ensure that the resultant passes through the center of gravity.
- Proper consideration should be given to the soil properties and bearing capacity to determine the suitable footing design.
In conclusion, designing a combined footing with a uniform net soil pressure is crucial for ensuring the stability and durability of the structure. By ensuring that the resultant of the column loads passes through the center of gravity of the footing slab, engineers can mitigate the risk of differential settlement and ensure uniform distribution of load on the soil.
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While designing combined footing, the resultant of the column loads passes, through the center of gravity of the footing slab such that the net soil pressure obtained is-a)Parabolicb)Trapezoidalc)Uniformd)Non-uniformCorrect answer is option 'C'. Can you explain this answer?
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