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The force exerted by pad footings, known as applied force...in natural fact, there is a shear force present 45deg. to the vertical of the footing. When the shear forces are projected and touch those of another footing placed on the ground, then its referred to as overlapping in which it means that in that area, the soil investigation should be carried out deeper that the usual values vertically below the proposed footings.

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Q: What causes due to overlap of bulb of pressure in soil mechanics?
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Related questions

Define pressure bulb in soil mechanics?

Shape: The pressure bulb is typically depicted as a three-dimensional shape, often resembling an inverted cone or pyramid. It extends downwards from the base of the loaded area or foundation into the soil. Distribution: Within the pressure bulb, the pressure is not uniformly distributed. It is highest at the base of the loaded area and decreases with depth. The pressure distribution is influenced by factors such as the shape and size of the foundation, the load magnitude, and the properties of the soil. Depth: The depth of the pressure bulb varies depending on the characteristics of the foundation and the soil. Deeper foundations will have deeper pressure bulbs.


What are the importance of pressure bulb?

The Zone in a loaded soil mass bounded by any arbitrary isobar is known as a pressure bulb. The vertical pressure at any point on the surface of the pressure bulb is the same.


Pressure bulb can you use a sodium bulb in a mercury fixture?

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What difference in the bulbs causes this difference in the currents?

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