Bored Piers Inspection
A bored piers inspection is required for many construction projects. Using the services of an independent inspector will ensure that all bored piers are installed at the correct locations. In a recent example, our team were called to a construction site, and despite the site supervisor signing off on the job being completed, it was discovered that one of the piers was missing.
To avoid any of these problems from affecting your project, you need independent bored piers inspection services. At Owner Inspections, we’ll attend your construction site and ensure that your bored piers are installed correctly according to your building plans.
What Is A Bored Pier?
Bored piers are reinforced concrete piles that support structures with heavy vertical loads. Bored piers are installed, or rather cast, at the construction site using heavy machinery to drill holes in predetermined places. Bored piers are considered a better option than screw piers as they can be installed with minimal noise and vibration.
Advantages Of Bored Piers
The main advantages of bored piers include:
- Piles can be installed at variable lengths which can account for the variation of soil types at the construction site
- There is a limited need for excavations and backfill
- Limited amount of disruption to the surrounding soil
- It does not cause excessive vibrations, which can affect nearby piles and buildings
- Are cost-effective compared to other methods (e.g., steel screw piers)
How Deep Can Bored Piers Go?
Bored piers can go as deep as sixty meters at a width of around two and a half metres. The depth of bored piers in your building will depend on what is being supported and the type of soil present at the project site.
How Are Bored Piers Installed?
Bored piers are installed using a bored piling machine. After the machine arrives at your building site, it will be used to drill a vertical hole in the locations as marked by your builder. The builder will have examined your building site and determined the number of bored piers and where they are located.
After the holes are drilled, a reinforced steel cage is lowered into the hole, and then the hole is filled with concrete. If required, the top of the pier can be capped to provide additional support for the structure.
The size and depth of the bored piers are usually determined by the weight they’ll need to support and where they’re being installed. Local councils and state building codes will often have guidelines for the suitable depth and size of bored piers. A bored pier inspection will indicate if the conditions under local building codes have been met and if the building can commence.
How Long Do Concrete Piers Last?
Bored piers made from concrete offer many advantages to buildings, with the main one being they are less expensive than piers made of other materials, such as steel. Another advantage of concrete bored piers is that they have a long life and are expected to last over seventy-five years.
Bored Piers Inspection
While builders must check that the piers are installed correctly, mistakes can happen, which may weaken the completed building. If your building is using bored piers in the construction process, it is essential to have them checked by an independent team. At Owner Inspections, we can assess the bored piers at your building site before your contractor moves on to the next stage.