Mat Type Foundation

Types of mat foundation.

Mat type foundation.

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. Additionally to the raft is made to improve the flexural stiffness of the foundation. Two common foundations that are for very different uses are mat foundations and pile foundations. There are many reasons why mat foundation is chosen by builders across the globe.

Factors on which footing types depends are bearing capacity of the 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. In the cellular mat foundation the structures of boxes are formed and walls of every box act as beams. 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. The condition of the soil. 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. The categorization of the mat foundations is made based on the modifications made to the flat plate.

The type of foundation required depends on many variables. Types of foundations or footings. The depth of the raft foundation is manly increased at column positions to carry the high bending moments and shear forces. The depth of the soil at which safe bearing strata exists.

8 types of the foundation footing are used in. Raft foundations also called mat foundations are most often used when basements are to be constructed. 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 type of superstructure is going to construct.

The weight of the building is spread evenly over the entire footprint of the building. We would like to show you a description here but the site won t allow us. Soil type building load and environment to name a few. Therefore an engineer designing a building with a basement will tend to choose a raft foundation over other types of foundations.

It is called a raft because the building is like a vessel that floats in a sea of soil. The walls are connected by slabs at the top and bottom. It is also termed as a box mat foundation. In a raft the entire basement floor slab acts as the foundation.

One reason is if the soil on which the building is constructed does not have a bearing capacity.