Screw Piling Melbourne — Fast, Reliable Foundation Solutions
Screw piling is a highly effective and adaptable form of foundation support that we have been offering at Harman Contracting throughout Melbourne for several years. Whether you want to install a new foundation, reinforce an existing one, or provide an underpinning solution for a building that is experiencing movement, screw piling is a method that provides a permanent solution with fewer disruptions and a quicker turnaround than many other methods.
We are a family owned business based in Melbourne with more than 60 years combined experience providing foundation support for residential, commercial, and industrial properties. Screw piling is one of our main service offerings and we perform screw pile installation throughout Melbourne and all of Victoria.
What Is Screw Piling?
Screw piling, also referred to as helical piling , is a type of foundation construction method whereby steel piles are lowered into the ground using a screw action rotationally . Each pile consists of a solid steel shaft manufactured from high-yield steel, with one or more helical plates attached to the base of the shaft by means of welding. When the pile is rotated with hydraulic pressure being applied, the helical plates cut through the soil, allowing vertical movement of the pile until it reaches stable load bearing ground.
Once installed, the pile, acting as an immediate point of reliable foundation support, directly transmits the weight of the building down to stable soil or rock, thus bypassing any unstable/problematic material that may exist between the structure and the load bearing strata.
At Harman Contracting, each screw pile is constructed using either 350 or 400 grade steel with appropriate shaft diameters and configuration of helical plates in accordance with project engineering requirements and based on specific site soil conditions and load force requirements.
How Does Screw Piling Work?
First Step: Assessment of Site Conditions
The condition of the soil (soil type), depth to solid bearing material, load requirement and accessibility to the site are all verified together to determine the proper design for the pile. The need for soil test and geotechnical investigation will often occur prior to the pile installation process.
Second Step: Pile Specification and Design
Once we have completed an assessment of the site, we determine the diameter of the pile shaft, the configuration of the helices, and the depth to install the pile. Where it is required that a structural engineer provide certification for the project, we work in coordination with the structural engineer to ensure the design will support the load requirements as per the applicable governing codes.
Third Step: Installing Piles
Each pile is rotated into position at the target depth and with the necessary installation torque . The time to install piles can be much less than that for conventional excavation methods and the installation process produces much less noise and little to no excess dirt.
Fourth Step: Connecting to Structure and Finalizing Work
After the installation of the piles is completed, the heads of the piles are connected to the structure above . Engineering certification is provided when it is required and the work will be completed in a clean and tidy manner.
Why Choose Screw Piling?
Speed of Installation
Compared to traditional bored piers, screw piles can be installed much more quickly. The installation process requires specialised screw piling equipment rather than extensive excavation and concrete placement, resulting in faster project completion and reduced overall construction time.
Less Disruption to the Site
Because screw piles require minimal excavation, disruption to the surrounding site is significantly reduced. There is less spoil to remove, fewer earthworks to manage, and generally a cleaner and more efficient construction process compared to conventional underpinning or bored pier installation.
Load Bearing Immediately After Installation
Unlike concrete footings that require curing time before they can support structural loads, screw piles can typically be loaded immediately after installation. This can significantly reduce project timelines, particularly on commercial projects where minimising downtime is important.
Resilient in Challenging Soil Conditions
Screw piles perform well in a variety of soil conditions where traditional footing systems may be difficult to install. They are particularly effective in sandy soils, silty soils, and sites with high groundwater levels where maintaining stable excavations can be challenging.
Reduced Vibration
The installation process generates significantly lower levels of vibration compared to driven piling methods. This makes screw piling well suited to sites located near existing buildings, heritage structures, or vibration-sensitive environments.
Minimal Environmental Impact
Screw pile installation generates very little waste and generally requires less site disturbance than many traditional foundation methods. The reduced excavation requirements can help minimise the environmental impact of the construction process.
Temporary or Removable Applications
In some situations, screw piles can be removed after use, making them suitable for temporary structures and projects where future flexibility is required. This can provide additional options where permanent concrete foundations may not be desirable.
Where We Use Screw Piling
Foundations of Residential Structures
Screw piles are widely used for new homes, extensions, decks, and outbuildings, particularly on sites with difficult or unstable soil conditions. Their compact installation equipment makes them especially suitable for residential projects where access is limited.
Underpinning Existing Homes
For homes experiencing foundation movement where conventional underpinning is impractical, or where soil conditions make excavation difficult, screw piling provides an effective and minimally disruptive alternative for foundation stabilisation.
Reblocking & Restumping
Screw piles are increasingly being used as an alternative to traditional concrete stumps. Compared with conventional reblocking and restumping methods, screw piles can often be installed more quickly, generate less excavation spoil, and provide engineered foundation support for existing structures.
Commercial & Industrial Foundations
Screw piling offers a fast and engineered foundation solution for commercial buildings, warehouses, industrial facilities, and infrastructure projects. The method helps minimise disruption to operations while providing immediate load-bearing capability once installed.
Limited Access Sites
The compact nature of screw piling equipment allows it to be used in locations where conventional foundation machinery cannot operate. Narrow side passages, restricted yards, confined internal spaces, and tightly constrained construction sites are all situations where screw piling may provide the ideal solution.
Heritage Properties
With minimal excavation and reduced vibration levels, screw piling is often well suited to foundation work on heritage buildings. The installation process helps minimise disturbance to the existing structure while delivering reliable foundation support.
Sloped & Embankment Sites
Screw piles can be installed vertically or at engineered angles to help stabilise retaining walls, embankments, and foundations on sloping sites where conventional foundation methods may be less suitable.
Screw Piling for Residential Properties
Homeowners in Melbourne can take advantage of using screw piling for their new construction or repair projects one of the best methods available today! If you need to build a new deck, underpinned an area that has shown signs of movement out of the original position or relocate from an existing foundation (also known as restumping), screw piling offers minimal disruption to your garden and home/property.
We provide screw piling to all suburbs in the greater Melbourne area, from the inner city to outer suburbs. Before we recommend screw piling for your particular site we will conduct a full site assessment, and we will also provide an honest recommendation if we feel that another method would suit your specific situation better.
Screw Piling for Commercial & Industrial Properties
We provide screw piling services to commercial clients throughout Melbourne, from small shops needing specific foundation repairs to large warehouses with needs for traditional foundations or needing to replace existing foundations. All screw piling projects include engineer certification to support commercial and industrial screw piling projects.
If you have an enquiry regarding commercial or industrial screw piles, please contact Anthony at 0402 661 682.
Screw Piling vs Conventional Underpinning — Which Is Right for You?
Screw piling and conventional underpinning are both effective foundation solutions, but the most suitable option depends on the specific conditions and requirements of the site.
Use screw piling if:
- Your site has sandy, silty, or high-groundwater soil conditions where conventional excavation may be difficult.
- Minimising disruption and achieving faster installation is a priority.
- Access restrictions require compact installation equipment.
- Immediate load-bearing capacity is required after installation.
- The project is located on a heritage property where vibration must be kept to a minimum.
- A temporary or potentially removable foundation solution is required.
Use conventional underpinning if:
- Soil conditions are suitable for traditional pier excavation methods.
- The project requires conventional reinforced concrete footing construction.
- Site access allows for standard excavation and underpinning equipment.
In many projects, both methods may be used together. Screw piling can be utilised in areas with restricted access or challenging ground conditions, while conventional underpinning may be used where excavation is practical. We assess each site individually and recommend the most appropriate solution based on the specific conditions and project requirements.
Our Screw Piling Equipment
The company Harman Contracting employs screw piling equipment that is specifically designed and made to work in Melbourne soil and for the types of projects we support. Compact units make up a large portion of our plant, allowing access-restricted residential and commercial sites to be built upon. These types of locations are usually too small to place standard foundation equipment.
The screw piles used by Harman Contracting are manufactured using a steel grade of either 350 to 400 and can be designed with either single or multiple helix plates, depending on the load capacity and soil conditions for each project. The diameter of the piles and the number of the helix plates are all determined according to the manner in which the piles were engineered and the type of project.
Why Choose Harman Contracting for Screw Piling in Melbourne?
- Years of screw piling experience — across residential, commercial, and industrial projects in Melbourne
- Purpose-built equipment — including compact plant for access-restricted sites
- Full range of pile specifications — shaft diameters and helix configurations to suit all load requirements and soil conditions
- Engineering certified — all screw piling work is backed by proper documentation where required
- Fully insured — registered builders with full public liability coverage
- Fast turnaround — screw piles are installed faster than many conventional foundation methods, helping keep projects on schedule
- Family-run business — honest advice, direct communication, and quality workmanship
- Free on-site quotes — we assess your site and provide a clear, itemised quote before any work begins