Concrete Raft Floor Construction

Definition of raft foundation along with working principle when to choose raft types of raft foundation materials of raft foundation raft construction steps etc are discussed below.

Concrete raft floor construction.

Then a waterproof plastic sheet is laid over the earth and a thin 3 layer of plain cement concrete pcc is poured just to create a perfectly flat and level base for the foundation. Concrete slab raft foundation pricing. Raft foundation is also known as mat foundation. The raft is laid on a hardcore or scalping bed and usually thickened at the edges especially in very poor ground.

A concrete toe often supports the external leaf of the wall. This is an alternative if you can t use a traditional strip or trench fill foundations. Insulation will generally be laid on top of the raft with a concrete floor or raised floor above. The raft foundation is a very commonly used type of foundation system.

An engineered raft foundation and flooring system that offers real benefits over a conventional concrete slab. Typically a thickened reinforced area is created at the perimeter of the raft to form an edge beam supporting the external walls of the building. Each slab structure is designed for a specific span load and is priced accordingly. A raft foundation spreads the weight of the building over the whole ground floor area of that building.

A raft foundation is constructed by first excavating the ground to a uniform flat level. Each raft slab is engineer designed to suit onsite conditions. Raft slabs are now a well established and proven type of concrete floor slab. Common mistakes in concrete floor slab construction can be avoided with proper base preparation mix design placement finishing and curing.

Ready super slab is an above ground engineered raft foundation system commonly known as a raft foundation pod floor waffle slab or floating foundation that delivers real benefits over a conventional concrete floor and foundations. If these steps are performed correctly the owner can expect an attractive durable product. A raft foundation is a reinforced concrete slab under the whole of a building or extension floating on the ground as a raft floats on water. This type of foundation spreads the load of the building over a larger area than other foundations lowering the pressure on the ground.

Standard concrete floor slab thickness in residential construction is 4 inches. Ribraft floors are an innovative method of raft concrete floor construction is quick and efficient to lay it offers excellent insulation benefits and is seismically strong. Rafts are most suitable when the ground is of good load bearing capacity and little work is required to get a solid foundation.