Find the Best Bored Pier Contractors Near You

Bored piers are concrete structures used to build strong foundations for a building. These are large in diameter, ranging from 2 to 30 feet. Builders use bored piers for construction on grounds with good quality soil. These include lands with low water tables or cohesive soil conditions.

First, the workers will extract a soil column or drill a hole. Once they have ascertained the soil quality, they will start installing the bored pier. If the ground has wet or poor-quality soil, piers cannot be used for foundations, as the drilled holes will collapse. In such cases, professionals prefer steel piles.

Concrete bored piers are used for creating strong foundations of buildings. They are stable and make for sturdy support systems for large structures. You will see the use of bored piers in docks, single-storey buildings, as well as skyscrapers.

Apart from that, concrete bored piers are also adopted to create sold piles that professionals often use for retaining walls. If the foundation of a structure needs support, builders use these piers for repairing and fixing purposes.

Apart from sturdy foundations, why concrete bored piers are beneficial is because they are noise-friendly. These structures use minimum vibration for installation, thus proving to be good for compact areas surrounded by other buildings.

While choosing construction materials, getting confused between piles and piers is natural. The main differentiating factor between piles and piers is the material and size. Piles and bored piers serve similar purposes but differ mainly in their installation methods and structural behaviours. Piles, often driven into the ground using heavy machinery, support structures by transferring loads to soil or rock with adequate bearing capacity. Bored piers, on the other hand, are created by drilling holes into the ground and filling them with concrete, making them ideal for conditions where vibration from driving piles would be problematic. Bored piers can also be tailored more precisely to specific load requirements and soil conditions, offering a versatile and often more controlled solution for deep foundation needs.

While both of these structures are used as foundations, the piles can be of varying materials and types. Piles are made from steel, wood, concrete, etc., while piers mainly feature concrete material. Apart from this, the diameter of piles can range from 2 inches to over 30 feet. However, piers always have a large diameter. It starts from 2 feet and can go above 30 feet in diameter.

The depth of installing concrete bored piers depends on factors such as soil type, building, and frostline. Though the maximum depth can vary in different situations, the average depth of concrete bored piers is 1.5-4.5 meters.

Concrete piers are not preferable for soil with high water levels. Additionally, in regions with low temperatures, the water in the soil may freeze and ruin the pier. That is why bored piers need to be placed below the frostline. Also, if the building is small, the bored pier should not be as deep as it would be with a higher structure.

iseekplant has a nationwide network of bored pier companies operating in all Australian capital cities from Brisbane to Sydney, Canberra, Melbourne to Darwin, Perth and Adelaide. We also offer bored pier solutions in all major towns and cities from Cairns down to Townsville, Sunshine Coast, Gold Coast, Newcastle and Geelong.

For those seeking high-quality bored piers in Australia, iseekplant offers a comprehensive platform to connect with numerous suppliers and service providers nationwide. With our vast network of service providers and heavy machinery suppliers, you can easily search for and compare the services offered by different companies, ensuring you find a provider that meets their specific project requirements.

iseekplant offers you the most up-to-date directory of the best bored pier companies in your area. We have suppliers all across Australia, so you’re bound to find a suitable bored pier contractor near you. To find what you’re looking for, simply do a search on our marketplace or if you’re looking for a more direct approach, contact our project team on 1300 691 912 or email projects@iseekplant.com.au and detail your specific needs, and we’ll have suppliers contacting you within hours if not minutes!

The bored pier method is an advanced technique used in construction to create deep foundations. It involves drilling deep, narrow holes into the ground, which are then filled with concrete and reinforced with steel to create a solid foundation. This method is particularly effective in cohesive soil conditions, providing stability for structures by transferring loads to deeper, more stable soil layers.

The process includes using an auger to drill the holes, which are kept open by the soil's cohesive nature until they are filled. Bored piers are a preferred choice for many projects due to their effectiveness in reducing settlement and their adaptability to various ground conditions.

Bored piers are foundational structures designed to support buildings and other large structures by transferring their loads to deeper, more stable layers of soil or rock. They are particularly useful in areas where the surface soil's strength is insufficient to support a structure's weight.

Bored piers also help to minimise settlement and provide resistance against lateral forces, making them ideal for tall buildings, bridges, and structures located on sloping sites. Furthermore, they are preferred in urban areas or near existing structures where vibration and noise from traditional pile driving would be problematic. Their versatility and ability to be custom-designed for specific load requirements make them a staple in modern construction.

Instead of bored piers, screw piers (or helical piers) offer a viable alternative for many construction projects. Screw piers are screwed into the ground and provide immediate load-bearing capabilities, making them suitable for a variety of soil types, including those where bored piers might not be as effective. This method also reduces the environmental impact since it generates no spoil that needs disposal.

Screw piers can provide precise control over the lifting and stabilising of structures, with the added advantage of minimal disruption to the site. They are often used in both residential and commercial projects, where speed and efficiency are paramount.

Bored piers vary greatly in size to accommodate the specific requirements of each construction project. Their diameters can range from 300 mm to 4.0 m, allowing for flexibility in design and application. The depth of these piers can extend up to 90 m, providing substantial support for structures requiring deep foundation solutions. The size and type of drilling rig used are determined by the project's scale and the soil conditions, with rigs available that range from lightweight, portable units to heavy-duty models capable of reaching the greatest depths needed for large-scale constructions.

The depth of bored piers can vary significantly based on project requirements and the underlying soil conditions. Typically, these piers can be constructed to depths of up to 90 meters, though such extreme depths are uncommon for most residential and commercial projects.

The necessary depth for a bored pier is determined by locating stable, load-bearing soil or rock strata capable of supporting the structure’s weight. For larger or particularly heavy structures, deeper piers may be necessary to ensure stability and safety. It's crucial to conduct thorough geological surveys before construction to identify the optimal depth for the bored piers, ensuring the long-term integrity of the supported structures.

Bored piers are installed using a process that begins with drilling a hole into the ground to the required depth using an auger or drilling rig. Once the hole is drilled, any loose material is removed, and a steel reinforcement cage is inserted to provide structural integrity.

Concrete is then poured into the hole, either directly or using a temporary casing to keep the hole open during pouring. After the concrete has been set and cured, it forms a solid, load-bearing pier. The method allows for minimal disturbance to the surrounding soil and can be adjusted for varying soil conditions, making it a flexible solution for many construction projects.

Bored piers are used in several scenarios, including when the building site has problematic soil conditions, such as soft top layers or layers that vary in stability and strength. They are also ideal for high-load structures like skyscrapers, bridges or heavy industrial facilities, where deep foundations are necessary to ensure stability.

In urban environments or close to existing structures, bored piles are preferred due to their low vibration and noise during installation, minimising disruption. Furthermore, they're suitable for environmentally sensitive sites where minimising soil displacement is crucial. Their adaptability to various depths and soil types makes bored piers a versatile choice for complex engineering challenges.

Bored piers are required instead of traditional footings when soil conditions or load requirements make standard shallow footings unsuitable. They are commonly used in situations such as:

• Weak or compressible soils: Where the surface soil cannot support the building load.
• High structural loads: For heavy buildings, bridges, or industrial structures needing deeper foundations.
• Variable ground conditions: Where soil layers vary in strength or consistency with depth.
• Restricted site space: Where excavation for wide footings is impractical.

Bored piers transfer loads to deeper, more stable soil or rock layers, providing greater structural stability than shallow footings in challenging ground conditions.

The diameter of bored piers varies depending on structural requirements, soil conditions, and project size. Common diameters include:

• Small to medium structures: 300–600 mm, typical for residential or light commercial buildings.
• Larger or heavy structures: 600–1,200 mm, used for multi-storey buildings, bridges, or industrial projects.
• Specialised applications: Diameters can exceed 1,500 mm for very high loads or poor soil conditions.

The exact diameter is determined by an engineer based on load calculations, pier depth, and the bearing capacity of the underlying soil or rock.

The construction of bored piers involves creating deep, cylindrical foundations that transfer structural loads to stable soil or rock. The typical process includes:

1. Site preparation: Clearing, levelling, and marking pier locations.
2. Drilling: Using an auger or rotary drill to bore a hole to the required depth.
3. Cleaning: Removing loose soil and debris to ensure a stable bore.
4. Reinforcement installation: Placing a steel cage or rebar to provide structural strength.
5. Concrete pouring: Filling the bore with concrete, often using tremie pipes for deep piers.
6. Curing: Allowing the concrete to set and gain strength before applying structural loads.

The process ensures that the pier can safely support the intended load while accommodating varying soil conditions and depths.