Thick Deep Mat Slab Foundation

When a spread footing columns can cover up to 50 of the foundation area.

Thick deep mat slab 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. A shallow foundation is a type of building foundation that transfers building loads to the earth very near to the surface rather than to a subsurface layer or a range of depths as does a deep foundation shallow foundations include spread footing foundations mat slab foundations slab on grade foundations pad foundations rubble trench foundations and earthbag foundations. 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. Houses built on a.

Types of mat raft 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 concept of stress is very basic to civil engineering. There are following types of mat foundation flat plate raft.

A slab foundation is a large thick slab of concrete that is typically 4 6 thick in the center and poured directly on the ground all at one time. If the cost of a deep foundation pile foundation is higher than the raft foundation we use to make the structure economical. Plate thickened under columns. The concrete slab is often placed on a layer of sand for drainage or to act as a cushion.

Two way slab and beam.