Laing O’Rourke decarbonises bids with new carbon calculator

Aaron Morby 2 years ago
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Laing O’Rourke has developed an innovative carbon calculator that can decarbonise project bids by up to 19%.

The tool can quickly analyse levels of embodied carbon in digital designs, enabling its technical team to reduce the carbon content of projects.

Embodied carbon content of the sub- and super-structure elements of a typical building project can account for more than half of the upfront embodied carbon.

Since last Spring, Laing O’Rourke’s in-house technical leaders have been refining the calculator using it on 14 bid submissions.

Phase one of the carbon calculator uses an internal Laing O’Rourke app, which automates the analysis of the digital model.

It extracts and indexes key information relating to a project design, such as component quantities and classification information.

Joanna Vezey, Europe technical director at Laing O’Rourke, said: “The app creates an auditable trail of all model revisions through the design phase.

“This brings benefits not only to carbon measurement, but also change, data validation and cost control.

“It does this by processing thousands of models each day across both of our operating hubs, constantly checking for new models and changes to existing ones. It currently holds several billion data points,” she said.

In phase two of the process, the app connects to a second database that houses all of Laing O’Rourke’s carbon material data.

The contractor’s material database has been developed using information provided from the Inventory of Carbon and Energy (ICE) database and continues to grow as the business adds Environmental Product Declaration (EPD) data from its supply chain partners.

“The final data is automatically recorded within the database and fed into a user- friendly dashboard, which we can use to assess the embodied carbon in the baseline design,” Vezey added.

“It displays the data in real-time and presents a carbon heat map of a project – which clearly identifies the embodied carbon of each component and where the greatest reductions can be achieved.

“This has allowed our teams to present alternative options to clients to reduce embodied carbon.”

The detailed analysis is building on the benefits of Laing O’Rourke’s offsite-manufacturing capability and operating model.

Rossella Nicolin, Structures Technical Director at Laing O’Rourke, said: “Our new carbon calculator cleverly merges data from different systems, analysing carbon content across a project and optimising our DfMA-led delivery.

“These learnings are now better understood and will help our Technology and Innovation team continue to make progress.”

“To date the results have been impressive and have enabled Laing O’Rourke project teams to develop carbon reduction strategies with clients, designers and supply chain partners.

Nicolin added: “The construction sector faces a major challenge in finding ways to reduce scope 3 emissions.

“This breakthrough tool helps us start to make progress. We are looking to broaden the tool’s application to help us decarbonise other standard components of builds and apply it to facades as well as structural works.”

 

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