If the cost of a deep foundation pile foundation is higher than the raft foundation we use to make the structure economical.
Mat foundation vs pile foundation.
Raft foundations also called mat foundations are most often used when basements are to be constructed.
In other words a shallow foundation.
Foundation can be primarily classified into two parts such as shallow foundation and deep foundation.
Selection of pile foundations based on cost vs.
A mat foundation spreads out under the footprint of the building and declines the contact pressure compared to conventional strip or trench footing.
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.
It is called a raft because the building is like a vessel that floats in a sea of soil.
Shallow foundation vs deep foundation.
They are basically classified depending on the depth at which the foundation is provided.
Two common foundations are mat foundations shallow and pile foundations deep.
On the other hand the pile foundation is an example of a deep foundation.
Types of mat raft foundation.
The concept of stress is very basic to civil engineering.
Shallow foundation and deep foundation have several differences.
Two way slab and beam.
The raft foundation or mat foundation is a prominent example of a shallow 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.
The weight of the building is spread evenly over the entire footprint of the building.
In a raft the entire basement floor slab acts as the foundation.
There are following types of mat foundation flat plate raft.
Plate thickened under columns.
The design of raft foundations involves a mat of.
This is one of the first and the most general point of difference between these two types of foundations.
A mat foundation sometimes called a raft foundation looks like it sounds.
It is a mat of concrete that sits on or just below the ground.
Frequently structural designer cannot reach concrete decision about whether to choose pile foundation or ordinary strip or mat foundation for the structure.