Mat Foundation Slab

A mat foundation sometimes called a raft foundation looks like it sounds.

Mat foundation slab.

1 rectangular combined footing 2 trapezoidal combined footing 3 strap footing mat foundations are generally used with soil that has a low bearing capacity. Mat foundations are appropriate for light pre engineered metal buildings with multi span rigid frames and flexible walls. It is considered as one type of shallow foundation and is useful in controlling the differential settlement. A mat foundation is a thick reinforced concrete slab supporting arrangements of columns or walls in a row or rows and transmitting the loads to the soil.

A raft foundation also called a mat foundation is essentially a continuous slab resting on the soil that extends over the entire footprint of the building thereby supporting the building and transferring its weight to the ground. Raft foundation is the essentially continuous slab which is resting on the hard soil which extends over the entire building footprint. In other words a shallow foundation. Mat foundation is also known as the raft foundation.

The building then rests on this foundation leading to lesser contact with the land and hence more strength and stability. Mat slabs are particularly well suited to sites on moderate slopes or where you will be cutting the building pad into a hillside. It is a continuous thick concrete slab on the soil that extends the entire footprint of the building and increases the soil bearing capacity power. Mat foundation is constructed as a large slab which works as the base for the building.

This foundation supports the entire building loads and safely transfer it to the ground. A raft or mat foundation is a large continuous rectangular or circular concrete slab that carries the entire load of the superstructure and spreads it over the whole area beneath the building. When more than one line of columns is supported by a concrete slab it is called a mat foundation. It is a mat of concrete that sits on or just below the ground.

Typically reinforced with a double layer of rebar throughout its pad a mat slab is capable of bearing loads at virtually any point and distributing heavy loads across an expanse of weak subsoil. It is used to support storage tanks industrial equipment silos chimneys and various tower structures. The mat foundation is also reinforced with many bars inside it which run perpendicular to each other. It declines the contact pressure in comparison with conventional strip or trench footing.

The construction of mat foundation. Combined footings can be classified generally into four categories.