2021-11-29

Researchers develop new tools to help builders reduce the carbon footprint of truss structures

By yqqlm yqqlm

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b2e41a82674e430 - Researchers develop new tools to help builders reduce the carbon footprint of truss structures

the “carbon content” in building materials includes carbon emissions from the production of materials (e.g. mining and smelting steel, or cutting and processing trees) and the fuel used to transport materials to the site. It also includes carbon emissions from equipment used for the building itself. Now, MIT researchers have made a detailed analysis and created a set of calculation tools to enable architects and engineers to minimize the carbon content in truss structures while maintaining all the characteristics required for specific architectural applications. Although in general, wood produces a much lower carbon footprint, while providing the best benefits where steel can be used, an optimized result can be achieved

Researchers develop new tools to help builders reduce the carbon footprint of truss structures

this analysis is described in a paper published in the journal engineering structure today (November 29, 2021). The new system uses a technology called topology optimization, which allows the input of basic parameters, such as the load to be supported and the size of the structure, and then produces optimal design for different characteristics, such as weight, cost and impact on global warming. Researchers say that wood performs very well under compression, but it is not as good as steel when it comes to tension, and there is a trend to pull the structure apart

Researchers develop new tools to help builders reduce the carbon footprint of truss structures(1)

generally speaking, the carbon content of wood is much better than that of steel, so if you have a structure without any tension, you should definitely use only wood to minimize emissions. The system developed by the researchers has proved that it can greatly reduce greenhouse gas emissions without loss of performance, and can achieve at least 10% improvement, but the actual effect may be two to three times that