Why We Use Raft Foundation
Raft Foundation are used for commercial building where we can get high strength for any construction building. And this foundation we can design for those building , where the bearing capacity is too much low. if the bearing capacity of soil is high so there we should not make Raft foundation.
1- Bearing capacity of soil is low.
2- Walls of the structure are so close that individual footings would overlap,
it is used for large loads.
3- Individual footings would cover more than about half of the construction area.
Advantages of Raft Foundation
Advantages of Raft Foundation
1- It requires little excavation.
2- It can cope with mixed or poor ground condition.
3- It reduces differential settlement.
4- Its take many time from other foundations
5-this foundation is too much expensive.
6- this foundation we can not make for normal building.
Disadvantages of Raft Foundation
Disadvantages of Raft Foundation
1-Its take many time from other foundations.
2- This foundation is too much expensive.
3- This foundation we can not make for normal building.
4- We can not repair this foundation.
2- This foundation is too much expensive.
3- This foundation we can not make for normal building.
4- We can not repair this foundation.
5- Mat foundation requires specific treatment for point loads.
6- Edge erosion occurs if not treated properly.
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