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Date: 2024-04-19 Page is: DBtxt001.php txt00018056

Building Design
Embedded Carbon

Structural Engineers Study Embodied Carbon of 600 Buildings ... More than half of a building’s embodied carbon is in its bones, prompting research—and soon, a new Revit tool.

Burgess COMMENTARY

Peter Burgess
https://www.buildinggreen.com/newsbrief/structural-engineers-study-embodied-carbon-600-buildings NEWS BRIEF Structural Engineers Study Embodied Carbon of 600 Buildings More than half of a building’s embodied carbon is in its bones, prompting research—and soon, a new Revit tool. A bar graph shows that floors account for the biggest portion of embodied carbon attributed to structural systems. On average, floors account for the largest portion of embodied carbon from structural systems, according to a recent study.
Graph: Thornton Tomasetti Which structural component would you expect to have the most embodied carbon? The foundation? The framing? The answer is actually the floors, according to an analysis of more than 600 buildings conducted by the engineering firm Thornton Tomasetti. (Disclosure: BuildingGreen’s president, Nadav Malin, is on Thornton Tomasetti’s Sustainability Advisory Board.) Structural engineering accounts for 55% of a typical new building’s overall embodied carbon, according to the firm. In an average commercial building, that impact is comprised of: floor slabs (47%) structural foundations (17%) walls (16%) structural framing (12%) structural columns (6%) To reduce the embodied carbon of structural systems, Thornton Tomasetti suggests alternatives like hollow-core slabs, voided slabs, or timber floors. The analysis also found that steel buildings had more embodied carbon in their structures than concrete or composite buildings. And LEED-certified buildings had lower average embodied carbon than non-LEED buildings (510 kg/m2 versus 590 kg/m2)—likely because LEED rewards the use of recycled steel and fly ash in concrete. After learning how influential structural engineering choices can be, Thornton Tomasetti is also building a tool for Revit that will allow users to optimize for low embodied carbon. Published January 7, 2020 Permalink
by Candace Pearson
The text being discussed is available at
https://www.buildinggreen.com/newsbrief/structural-engineers-study-embodied-carbon-600-buildings
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