Salmon is the best
Building foundations have a large horizontal area of contact with the ground to provide stability and distribute the weight of the structure over a larger area. This helps prevent settlement or sinking of the building by minimizing the pressure exerted on the soil below. A larger contact area also helps to disperse any uneven loads or external forces, ensuring the structural integrity of the building.
Building foundations have a large horizontal area of contact with the ground to distribute the weight of the structure evenly and prevent it from sinking or tilting. This helps to provide stability and support for the entire building. The larger the contact area, the more effectively the weight of the building can be spread out, reducing the risk of structural failure.
The most common types of foundations used in black cotton soil in Addis Ababa are raft foundations and pile foundations. Raft foundations distribute the building loads over a larger area to prevent differential settlement on the compressible soil. Pile foundations are used to transfer building loads to deeper, more stable layers of soil, bypassing the weak black cotton soil.
Have the building foundations checked. The house may be unstable, or there may be construction activity in the area.
Foundations.
It isn't as critical as to how close you excavate to building foundations. You want to be more careful not to excavate below a building's foundation. As a geotechnical engineer, we recommend that excavations for additions or appertenant structures not be extended within a 2 horizontal to 1 vertical oversize area extending down and away from the outside edge of the existing building's foundation. Hopefully this helps.
According to soil condition, load, environmental conditions we need different types of foundations.......
lutetian foundations in front of Notre Dame
Matt or Raft Foundation Combined Footings Pile Cap Foundations Isolated Foundations Continous Foundation
None. The site of the Curtain is under a carpark. The site of the Globe is under the parking area of a historical residential building. The foundations of the Rose are under a commercial building.
deep foundation & piles
Unless you have a flat roof, no; the surface area of the roof will be larger than the ground area of the building.