Mat Type Foundation

It is called a raft because the building is like a vessel that floats in a sea of soil.

Mat type foundation.

Additionally to the raft is made to improve the flexural stiffness of the foundation. In the cellular mat foundation the structures of boxes are formed and walls of every box act as beams. Types of foundations or footings. Types of mat foundation.

Raft foundations also called mat foundations are most often used when basements are to be constructed. Factors on which footing types depends are bearing capacity of the soil. The type of foundation required depends on many variables. Raft or mat foundations are the types of foundation which are spread across the entire area of the building to support heavy structural loads from columns and walls.

Therefore an engineer designing a building with a basement will tend to choose a raft foundation over other types of foundations. The depth of the soil at which safe bearing strata exists. A mat foundation is used when the subsoil is weak and column loads are so heavy that the conventional spread footings cover more than 50 of the building area. Mat foundation also known as a raft foundation or floating foundation is a way of giving extra support to a building.

The type of superstructure is going to construct. One reason is if the soil on which the building is constructed does not have a bearing capacity. Soil type building load and environment to name a few. There are many reasons why mat foundation is chosen by builders across the globe.

The weight of the building is spread evenly over the entire footprint of the building. Since this soil is not able to support the building on its own a mat foundation is built. The condition of the soil. 8 types of the foundation footing are used in.

In a raft the entire basement floor slab acts as the foundation. How to construct a raft or mat foundation a raft foundation is constructed by first excavating the ground to a uniform flat level. The load applied from structure to the foundation. It is common to use mat foundation or deep basements to transfer the column loads to the underlying soil as well as provide floor slab for the basement.

The walls are connected by slabs at the top and bottom. This type of foundation is suitable for loose soil. Raft or mat foundation the use of mat foundation is for columns and walls foundations where the loads from the structure on columns and walls are very high. It is also termed as a box mat foundation.

The depth of the raft foundation is manly increased at column positions to carry the high bending moments and shear forces.