Short answer
When designing building structures, consider mass timber as a primary material option to significantly reduce embodied carbon and contribute to carbon sequestration goals.
- Field
- Sustainability
- Source
- Buildings (2024)
- Method
- Comparative Life Cycle Assessment (LCA)
- Evidence
- Strong effect
Utilizing mass timber in building construction can significantly reduce embodied carbon emissions by up to 19% compared to traditional steel structures, while also sequestering carbon. This sustainability research insight is drawn from a 2024 study published in Buildings. Using Comparative life cycle assessment (lca), researchers explored how this design variable affects real-world outcomes. The key design takeaway: When designing building structures, consider mass timber as a primary material option to significantly reduce embodied carbon and contribute to carbon sequestration goals.
Mass Timber Structures Offer 19% Embodied Carbon Reduction Over Steel Equivalents
Utilizing mass timber in building construction can significantly reduce embodied carbon emissions by up to 19% compared to traditional steel structures, while also sequestering carbon.
Buildings · 2024
Key Findings
- 01Mass timber structures result in 198 kg CO2 eq per square meter of gross floor area.
- 02Steel structures result in 243 kg CO2 eq per square meter of gross floor area.
- 03Mass timber achieved a 19% reduction in carbon emissions compared to the steel structure (modules A1-A4).
- 04Approximately 2757 tonnes of CO2 eq are stored within the mass timber building structure.
Application
Design takeaway
When designing building structures, consider mass timber as a primary material option to significantly reduce embodied carbon and contribute to carbon sequestration goals.
How to apply
When specifying structural materials for a design project, conduct an LCA to compare the embodied carbon of mass timber against steel or concrete alternatives.
Project actions
- 01When researching materials for your design project, look for data on embodied carbon (e.g., GWP).
- 02Consider the entire lifecycle of materials, even if your analysis focuses on a specific stage.
Method & Evidence
Variables
Strengths & Limitations
Strengths
- +Direct comparison of a real-world mass timber building with a hypothetical steel equivalent.
- +Utilizes a recognized LCA tool and standard (EN 15804).
Limitations
This study only looked at the carbon footprint from raw material extraction to the construction site, not the building's use or disposal.
Reliability & validity
The study's validity is supported by the use of a standard LCA methodology and tool. Reliability would depend on the consistency of input data and assumptions made within the LCA software.
Think critically
How might the inclusion of operational energy use and end-of-life scenarios alter the comparison between mass timber and steel structures?
Design Principles
"Prioritize materials with lower embodied carbon and carbon sequestration potential in structural design."
This finding provides critical data for designers and engineers aiming to minimize the environmental impact of construction projects. It highlights mass timber as a viable and sustainable alternative that directly addresses the global challenge of carbon emissions in the built environment.
What This Means for Your Design
Using wood for building structures instead of steel can lower the amount of carbon dioxide released into the atmosphere by about 19% during the material's production and transport, and the wood itself stores carbon.
How to use in your project
- 1.Reference this study when justifying the selection of sustainable materials in your design project's analysis or evaluation sections.
Add to My Project
Quick Cite
Paragraph starter
Research indicates that mass timber structures offer a significant reduction in embodied carbon compared to steel equivalents, with studies showing up to a 19% decrease in CO2 emissions (Hemmati et al., 2024). This highlights the potential for mass timber to contribute to more sustainable construction practices by lowering the environmental impact of building materials.
Source
Buildings
Comparison of Embodied Carbon Footprint of a Mass Timber Building Structure with a Steel Equivalent
journal · 2024
View sourceQuestions About This Research
- What does the research say about mass timber structures offer 19% embodied carbon reduction over steel equivalents?
- When designing building structures, consider mass timber as a primary material option to significantly reduce embodied carbon and contribute to carbon sequestration goals. Evidence: Buildings (2024).
- Why does "Mass Timber Structures Offer 19% Embodied Carbon Reduction Over Steel Equivalents" matter for design?
- This finding provides critical data for designers and engineers aiming to minimize the environmental impact of construction projects. It highlights mass timber as a viable and sustainable alternative that directly addresses the global challenge of carbon emissions in the built environment.
- How can designers apply this research?
- When designing building structures, consider mass timber as a primary material option to significantly reduce embodied carbon and contribute to carbon sequestration goals.
- What were the main findings?
- Mass timber structures result in 198 kg CO2 eq per square meter of gross floor area.. Steel structures result in 243 kg CO2 eq per square meter of gross floor area.. Mass timber achieved a 19% reduction in carbon emissions compared to the steel structure (modules A1-A4).. Approximately 2757 tonnes of CO2 eq are stored within the mass timber building structure.
- What research method was used?
- Comparative Life Cycle Assessment (LCA).
- How strong is the evidence?
- Evidence strength is rated Strong effect, based on a 2024 journal from Buildings.
- What should I do differently in my next project?
- When specifying structural materials for a design project, conduct an LCA to compare the embodied carbon of mass timber against steel or concrete alternatives.
- What are the limitations?
- The study's system boundary was limited to cradle-to-construction site (A1-A4), excluding operational and end-of-life phases. Other environmental factors beyond GWP were not assessed.