Information Regarding The Three Common Forms Of Home Foundations

There are 3 base types of foundations in use today in the development of a home.

Post-Tension, Concrete Slab Foundations

A slab foundation is a foundation built without delay on the soil with no cellar or crawl space. Slab foundations are widespread in areas where soil conditions are not suitable for a basement, and are the commonest foundation found in hotter areas like Florida, Arizona, California and Texas, or anywhere where the depth between the soil and stable underlying rock is really shallow. Slabs are the swiftest and least expensive foundation because they require less work, talent and materials cost. They are composed of a concrete slab that is generally six to 8 inches in thickness. Inserted within the slab is a grid of supporting ribbed metal rods known as “rebar.” Even in spots where basements are prevalent, slab foundations are typically laid to serve as the base for structures like garages, pole barns, and sheds.

Slabs are the least costly of the 3 main foundation types but provide no storage or utility space, as the home actually sits without delay on a massive platform of solid concrete. Slabs have the drawback of being difficult and pricey to fix when they settle and crack, and plumbing lines that protrude from the soil upward through the concrete can also be expensive to repair [*T]. In areas where the underlying soil is thick or susceptible to unrestrained enlargement and contraction, wires are embedded which can often be tightened to provide better horizontal support and reduce the width of cracks.

Pier and Beam Foundations

A pier and beam foundation is composed of either vertical wood or concrete columns (piers) that support beams or floor rafters above the ground. The areas between the soil and the bottom of the house floor is often known as the crawl space. These foundations are built either at ground level or over a shallow excavation that varies in depth, but is often about thirty six to forty inches deep. The best crawl space foundations have a load-bearing concrete wall and concrete or steel piers, both having footings below the freeze line of the soil, together with a good barrier over the soil to keep moisture in hand. Less expensive versions have no load-bearing perimeter walls, piers with shallow footings, and no moisture barrier at all over the soil. Crawl spaces that enclosed by a wall or by skirting must have vents on each side to allow air to circulate and help keep the soil dry under the home. These vents must be configured to forestall the entry of rodents and snakes.

Crawl space foundations are most frequently used in areas where there is heavy clay content in the soil that can severely damage (crack) slab foundations, or in waterfront or flood prone building sites where the obligatory floor height to stop water penetration of the living space must be higher than a slab can normally provide. The number one benefits of crawl space foundations are that plumbing lines are quickly accessible for repairs, and foundation settlement issues are simpler and cheaper to fix than with slab foundations. A first drawback occurs when these foundations are not correctly maintained or are built without sufficient ventilation, permitting water or pests to cause damage. Crawl space foundations without adequate insulation applied to the base of the house floor can be energy ineffective in a colder climate. If pier and beam foundation repair is required, your house might require further repairs to the support beams that may became warped or rotted.

Basement Foundations

A cellar is a kind of foundation which includes an accessible space between the soil and the bottom of the first floor of a home. This foundation provides living space below the home, below the ground elevation. It is essentially a slab foundation with walls and a floor. Basements are most often built in colder weather climates such as the Northeast, Midwest and Rocky Mountains, and in places where the price of excavation is not prohibitory. Basements commence with a hole approximately 8 feet deep , however , some homeowners will choose a 9 or 10 foot deep basement wall to extend height and volume of useable space.

The walls and floor are built, then the house itself is built over that. Basement foundations have got the edge of providing helpful space for resources, mechanicals systems, and storage not available in the prior 2 sorts of foundations. The primary disadvantage of basements is that because they are generally below ground level, they are vulnerable to leakage, mold. Formation, and flooding. Basements in wet climates must always have a working drain and pump in the floor to fight flooding.

Jack Durden is an authority on foundation repair in Dallas who performs quality work and consulting in the DFW Metroplex. If your home needs foundation repair, it is smart to have an expert investigate your current position right before further structural repairs are needed.