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.

This type of foundation is suitable for loose soil. How to construct a raft or mat foundation a raft foundation is constructed by first excavating the ground to a uniform flat level. Types of mat foundation. We would like to show you a description here but the site won t allow us.

There are many reasons why mat foundation is chosen by builders across the globe. 8 types of the foundation footing are used in. 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. In a raft the entire basement floor slab acts as the foundation.

Soil type building load and environment to name a few. Raft foundations also called mat foundations are most often used when basements are to be constructed. Types of foundations or footings. 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.

Factors on which footing types depends are bearing capacity of the soil. It is also termed as a box mat foundation. 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. The weight of the building is spread evenly over the entire footprint of the building.

The type of foundation required depends on many variables. 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. Two common foundations that are for very different uses are mat foundations and pile foundations.

Therefore an engineer designing a building with a basement will tend to choose a raft foundation over other types of foundations. The categorization of the mat foundations is made based on the modifications made to the flat plate. 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. Since this soil is not able to support the building on its own a mat foundation is built.

Additionally to the raft is made to improve the flexural stiffness of the foundation. The depth of the soil at which safe bearing strata exists. Mat foundation also known as a raft foundation or floating foundation is a way of giving extra support to a building. The walls are connected by slabs at the top and bottom.

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