The Environmental Benefits of Screw Piles for Steel Structures.
In the construction of steel structures, the foundation is as critical as the framework. While traditional concrete foundations have been the standard solution for decades, they present substantial environmental challenges. Screw piles, however, present a sustainable, efficient, and equally robust alternative—particularly when customised and fabricated in-house, as is the case at FLI.
FLI’s in-house screw pile design, manufacturing and installation capabilities enable delivery of fully customisable screw piles that align with both the project’s unique requirements and modern sustainability goals.
Here’s why screw piles are not just the smarter foundation choice but also the greener one.
Lower Carbon Emissions.
Concrete production is one of the largest sources of industrial CO2 emissions, responsible for 7-8% of global CO2 emissions annually. Much of this comes from the cement manufacturing process, which releases around 900 kg of CO2 per ton of cement.
In contrast, screw piles use no wet trades. By fabricating and installing screw piles, the overall carbon footprint of a foundation can be reduced by up to 70%, particularly when paired with in-house manufacturing and minimal transportation requirements.
Reduced Soil Disruption.
Installing concrete foundations typically requires extensive excavation and soil removal, leading to disrupted soil ecosystems, increased erosion, and a heavy reliance on dump trucks to haul soil away. Each dump truck trip adds to emissions, with a single truck releasing about 1.2 kg of CO2 per mile travelled.
Screw piles, however, are installed directly into the ground with minimal soil disturbance and no cart away. They preserve the natural environment, maintain soil stability, and eliminate the need for extensive excavation or soil transport. This makes them ideal for environmentally sensitive and protected areas.
Energy-Efficient Installation.
Concrete foundations often require heavy machinery, multiple labour-intensive processes, and long curing times. These processes increase both the energy use, and the time needed for construction. The production and curing of a single cubic meter of concrete consume about 2,775 MJ of energy.
In comparison, screw piles are quicker to install, requiring only lightweight machinery and no curing time. This reduces energy consumption during construction by up to 50%.
Customisability and Strength.
Concrete foundations are poured into pre-set forms, limiting flexibility in design and adaptability should there be fit issues or modifications. Screw piles, on the other hand, can be customised and adapted to match the exact load requirements of your steel structure.
With FLI’s in-house fabrication capabilities, each screw pile can be designed to optimise strength while minimising material waste. Screw piles can handle substantial loads, with individual piles supporting typically 200 KN or more in tension or compression, depending on soil conditions.
Reusability and Waste Reduction.
Concrete foundations are permanent and typically demolished at the end of a structure’s life, generating construction waste. Globally, the construction industry produces over 2 billion tons of waste annually, much of which comes from concrete. Concrete cannot be used in the same form. Even repurposing by crushing for aggregate takes significant energy.
Screw piles, however, are fully reusable. They can be removed and reinstalled in future projects or recycled as steel scrap, drastically reducing waste and promoting a circular construction process.
Adaptability to Site Conditions.
Concrete foundations are often unsuitable or impractical in challenging soil or environmental conditions.
Screw piles excel in diverse conditions, including soft soils, high water tables, and uneven terrain. This adaptability reduces the need for additional materials, excavation, or site alterations, making them a more sustainable choice.
Cost Efficiency Over Time.
While concrete foundations might seem cost-effective upfront, but the extra time on site increases the cost of prelims and the associated risk can also increase cost. Generally, most the risk is in the ground.
Also,their environmental and logistical challenges often lead to higher long-term costs. Concrete cracks and degrades over time, requiring repairs or replacements, which add to material waste and emissions.
Screw piles, however, offer long-term durability with minimal maintenance. Their reusability and adaptability ensure they remain cost-efficient and environmentally responsible throughout their lifecycle.
Conclusion
FLI’s in-house screw pile solution combines sustainability, strength, and customisation. Compared to traditional concrete foundations, screw piles dramatically reduce carbon emissions, soil disruption, and waste, while providing a foundation system that adapts to your project's unique requirements.
With FLI’s industry-recognised accreditations and certifications, FLI ensures that every project meets the highest standards of quality, safety, and environmental responsibility. Whether constructing a small steel structure or a large-scale project, screw piles are the environmentally conscious choice that doesn’t compromise on performance. With up to 70% fewer emissions, minimal site impact, and unmatched customisability, screw piles are the foundation for a greener, stronger future in construction.
Ready to build stronger, greener foundations? Contact FLI today to discuss how screw piles can support your next project.
