The foundation of a house or other building is the most important part of the entire construction. It assures that the structure has integrity and that the building is protected from annual freeze and thaw cycles. Concrete foundation services use three main types of foundations and each has its own distinct advantages for builders and homeowners.
This type of concrete foundation is one of the most common types of foundations used in home construction and other structures. However, they are most often used under structures in areas where the ground freezes during the winter. It gets its name from the shape of the footing, which looks like an upside down “T”.
The footing is placed below the frost line and the walls are constructed and poured on top. The slab is then poured between the walls. This type of foundation is beneficial because it gives the structure a more secure footing due to the width. It is also one of the most expensive types of foundations since it requires three separate pours to finish the job.
Another common type of foundation that is typically used in areas where the ground does not freeze is called the slab-on-grade foundation. However, it can also be adapted to use in colder climates with the addition of insulation around the perimeter. It is a less expensive foundation to pour than the T-foundation mentioned above since there is only one concrete pour required.
The first step in pouring a slab-on-grade foundation is pouring a base layer of crushed gravel, which allows for drainage. On top of that, a single layer of concrete, called a slab, that is several inches thick is then poured over the top. In most cases, wire mesh is added to the slab to help prevent cracking. The outer edges of the slab are typically thicker and reinforced with rods to form a stronger footing.
Frost Protected Foundation
The third method of foundation pouring is very similar to a slab-on-grade foundation in that a layer of gravel is first laid down. The major difference comes from the fact that sheets of rigid, polystyrene insulation are laid on top of the gravel and along the outside of the foundation wall before pouring the slab. This is a cost-effective foundation, since, like the slab-on-grade type, it only requires a single pour.
This type of foundation is only used for heated structures. The basic idea of the insulation is that it holds the heat from the structure in the ground under the footings. This helps to prevent heat from escaping from around the edges of the slab and keeps the ground around the footings from freezing.
When it comes down to it, the foundation of any structure is, by far, the most important part of the process. In order to determine the right type of foundation for your construction project, contact us. We are always happy to share our experience and answer any questions that you may have.