Reduce embodied carbon and project costs before construction starts

When it comes to reducing embodied carbon in construction, some of the most important decisions are made long before the first truck arrives on site.

By the time a project reaches procurement, many of the major material choices have already been locked in. This can limit opportunities to optimise material use, which could help reduce embodied carbon, improve productivity and potentially lower project costs.

For project owners, engineers and contractors looking to reduce embodied carbon, improve material efficiency and optimise project value, the greatest opportunity often lies in the design phase.

Why early decisions matter

Embodied carbon refers to the greenhouse gas emissions associated with the materials used to construct a project.

While attention is often focused on operational emissions, the materials selected during design can have a significant impact on a project’s overall carbon footprint.

Decisions around concrete, reinforcing steel, structural steel and other key materials influence the quantity of material required, the emissions associated with producing them, and ultimately the cost of delivering the project.

Making these decisions early allows project teams to assess alternatives, optimise designs and integrate lower embodied carbon solutions without disrupting project timelines.

InfraBuild Engineering Solutions Manager, Anthony Ng, said early engagement gives project teams more flexibility to optimise engineering, sustainability and productivity outcomes.

“Some of the most effective opportunities to reduce embodied carbon and improve productivity happen during the design phase, when engineers have the greatest ability to influence material selection and optimise structural performance and constructability,” he said.

“Once projects move into procurement, there is often less flexibility to make meaningful changes.”

The role of reinforcing steel

Reinforcing steel is a critical component in most infrastructure, commercial and residential construction projects.

Traditionally, many projects have specified 500 MPa reinforcing steel. However, advances in material technology have created opportunities to achieve the same structural performance using 600 MPa, higher-strength alternatives.

SENSE 600® reinforcing steel is manufactured in Australia from 100% scrap and offers engineers the ability to reduce the amount of reinforcing steel required in many applications compared with conventional 500 MPa steel.

This can help reduce material consumption, lower embodied carbon and, where appropriate, reduce project costs while maintaining structural performance.

Why timing is important

The earlier a project team evaluates reinforcing options, the easier it becomes to incorporate potential material efficiencies into the design.

During concept and detailed design phases, engineers can assess the benefits of using SENSE 600® and incorporate those material, carbon and potential cost benefits into calculations, schedules and specifications.

Once procurement documents have been finalised, making changes can require additional reviews, approvals and redesign work.

Anthony said engaging early allows project teams to unlock the full benefits available through modern reinforcing solutions.

“When reinforcing steel is considered during design, engineers can evaluate where SENSE 600® may be appropriate and identify opportunities to reduce material volumes while meeting project requirements,” he said.

“That creates a much smoother process than trying to introduce changes once design, specification and procurement activities are already underway.”

Supporting project sustainability goals

Across Australia, sustainability requirements are becoming increasingly important for both public and private sector projects.

Project teams are being asked to demonstrate how they are reducing embodied carbon, improving material efficiency and supporting broader environmental objectives, all without compromising project timelines.

Material selection is one of the most practical ways to improve environmental outcomes while also identifying opportunities to reduce project costs.

By considering lower embodied carbon solutions during design, projects can build sustainability into the project from the beginning rather than trying to address it later.

Starting the conversation earlier

Reducing embodied carbon does not need to mean redesigning a project or introducing complexity.

In many cases, the biggest opportunity is simply starting the conversation earlier.

By engaging with suppliers, engineers and technical specialists during concept and detailed design, project teams can better understand the options available and identify opportunities before procurement begins.

As sustainability expectations continue to evolve, early collaboration will play an increasingly important role in helping projects achieve both performance and environmental objectives.

Planning a project?

InfraBuild’s technical team works with engineers, consultants and project teams during the design phase to explore opportunities to improve material efficiency, reduce embodied carbon, improve productivity and identify potential project cost savings through reinforcing steel selection.

Talk to our team early to understand what may be possible for your next project.