There are following types of mat foundation flat plate raft.
Mat foundation vs pile foundation.
Two common foundations are mat foundations shallow and pile foundations deep.
In other words a shallow foundation.
A mat foundation sometimes called a raft foundation looks like it sounds.
They are basically classified depending on the depth at which the foundation is provided.
Foundation can be primarily classified into two parts such as shallow foundation and deep foundation.
In a raft the entire basement floor slab acts as the foundation.
Plate thickened under columns.
The design of raft foundations involves a mat of.
A mat foundation spreads out under the footprint of the building and declines the contact pressure compared to conventional strip or trench footing.
Shallow foundation vs deep foundation.
It is called a raft because the building is like a vessel that floats in a sea of soil.
Raft foundations also called mat foundations are most often used when basements are to be constructed.
On the other hand the pile foundation is an example of a deep foundation.
It is a suitable solution for low bearing capacity soil spread footing cover about 70 of the structure high structure loads soft pockets or cavities of in the soil to unknown extent raft and.
In one words where deep foundation like pile foundation are not economical and feasible and isolated column footing is impracticable due to large footing size or over lapping of neighbor footing raft foundation is the economical solution.
Types of mat raft foundation.
A raft foundation is often used when the soil is weak as it distributes the weight of the building over the entire area of the building and not over smaller zones like individual footings or at individual points like pile foundations this reduces the stress on the soil.
Shallow foundation and deep foundation have several differences.
The weight of the building is spread evenly over the entire footprint of the building.
Two way slab and beam.
If the cost of a deep foundation pile foundation is higher than the raft foundation we use to make the structure economical.
Selection of pile foundations based on cost vs.
Other foundations for construction projects and factors affecting pile foundation cost is discussed.
This is one of the first and the most general point of difference between these two types of foundations.
When a spread footing columns can cover up to 50 of the foundation area.
Frequently structural designer cannot reach concrete decision about whether to choose pile foundation or ordinary strip or mat foundation for the structure.