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A Brief Look At Concrete Foundation Services Made Available By Concrete Contractors

November 26, 2017



Concrete Foundations

Construction of foundations is one of the mostly popular services from concrete contractors. You can find 3 major foundation designs that are often employed. they include: poured wall foundations, slab foundations and pier or pillar foundations. Briefly put, this is what these major types of foundations entail:

1. Slab Foundations

They are quite easy and economical and they are mostly preferred because they do not need the requirement for major excavations, foundations walls or footings. 3 variants of the slab foundation exist, namely: cold area, wet warm area and desert. For those three, the site is often staked out with batter boards and the top layer of soil or sod is normally removed. Materials and tools used are quite much like those used for typical pour slab foundations.

2. Pier and Pillar Foundations

Pier foundations are simply just individual footers that are meant to support a structural beam or post. Simple pier foundations are often utilized for small structures that are built using a crawl-space design. Anchor plates and bolts are often secured in place in the pier footer before the concrete fully sets in. Attaching the beam or post is thus simplified and therefore, ends in one of the most strongest of applications. Pier foundations are usually, set deep into the ground to prevent the upheaval and shifting processes a result of perennial freeze and thaw cycles. To bring down the quantity of concrete that is used, a truncated pyramid shape is employed. Plywood or any other strong lumber may be used to construct the forms.

3. Poured Wall Foundations

Unlike block foundations, poured concrete foundations offer the advantage of possessing no joints or any weak spots. Through the foundation, no mortar or hollow openings are in existence. This leads to poured wall foundations presenting a number of advantages such as:

- Increased water proofing.

- Increased fire resistance.

- Design flexibility

- Ease of maintenance.

Alternatively, concrete blocks utilized to build block foundations are naturally hollow and so they tend to be vulnerable to damage specially when afflicted by high compressive or tensile stresses.

Ordinarily, in the construction of poured wall foundations, large and high wooden forms are constructed and secured properly to ensure that they're able to sustain the volume of pressure that they will be subjected to through the concrete pour. In a single continuous pour, concrete is poured to the foundation forms to ensure there no weaknesses. Poured concrete foundations are generally strengthened by means of reinforcing steel.

For vertical reinforcement, steel bars will already have been strategically installed to the footing before the concrete pour has been done. The rods used could be typically 1 1 / 2 inches across and they are usually directly coupled to the poured concrete footer that this foundation rests on. Alternatively, horizontal reinforcement necessitates that the steel bars be horizontally placed in the upper and lower areas of the poured foundation walls. The reinforcing steel carries a extremely high tensile strength of around 40,000 lbs per square inch. This horizontal steel stops the development of vertical cracks when the building blocks heaves or drops.

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