Short answer
Prioritize the design for disassembly and actively seek opportunities to incorporate reclaimed materials into new construction projects to reduce environmental impact.
- Field
- Resource Management
- Source
- Academic Publication (2021)
- Method
- Quantitative analysis and extrapolation
- Evidence
- Strong effect
A substantial portion of materials from Toronto's single-detached housing stock, particularly masonry, concrete, and framing lumber from older homes, can be reclaimed for reuse and recycling. This resource management research insight is drawn from a 2021 study published in Academic Publication. Using Quantitative analysis and extrapolation, researchers explored how this design variable affects real-world outcomes. The key design takeaway: Prioritize the design for disassembly and actively seek opportunities to incorporate reclaimed materials into new construction projects to reduce environmental impact.
Toronto Housing Demolition Yields Significant Reusable Material Stocks
A substantial portion of materials from Toronto's single-detached housing stock, particularly masonry, concrete, and framing lumber from older homes, can be reclaimed for reuse and recycling.
Academic Publication · 2021
Key Findings
- 0161-66% of material volume in Toronto's in-use and annual obsolete housing can be reclaimed for reuse/recycling.
- 02Masonry, concrete, and framing lumber from houses built between 1930-1960 are the primary recoverable materials.
- 03Annual obsolete reusable materials represent significant embodied carbon (2,287-4,116 tonnes) and energy (52,883-95,189 GJ).
Application
Design takeaway
Prioritize the design for disassembly and actively seek opportunities to incorporate reclaimed materials into new construction projects to reduce environmental impact.
How to apply
When designing new buildings or renovations, investigate local sources of reclaimed materials and design for ease of future deconstruction and material recovery.
Project actions
- 01Investigate the material composition of existing structures in your local area.
- 02Research local policies and initiatives related to construction and demolition waste management.
- 03Consider the end-of-life scenario for materials specified in your design project.
Method & Evidence
Variables
Strengths & Limitations
Strengths
- +Quantifies material stocks at a city scale.
- +Applies environmental indicators (carbon, energy) to material recovery.
Limitations
The availability and quality of reclaimed materials can vary significantly. Local regulations and market demand for recycled materials can also impact feasibility.
Reliability & validity
The study's reliability is supported by the development of archetypes and extrapolation to a city scale. Validity is enhanced by using established criteria for reusability and recyclability and considering multiple environmental indicators.
Think critically
To what extent can the findings from Toronto's housing stock be generalized to other cities with different building typologies and demolition practices?
Design Principles
"Design for deconstruction and material circularity."
Understanding the volume and type of reusable materials available from existing building stock is crucial for developing effective waste diversion strategies. This insight informs design decisions by highlighting opportunities for material circularity and reducing reliance on virgin resources.
What This Means for Your Design
When old buildings are torn down, a lot of the stuff inside, like bricks and wood, can be used again instead of just being thrown away. This saves a lot of energy and stops pollution.
How to use in your project
- 1.Reference this study when discussing the environmental impact of material selection and waste management in your design project.
- 2.Use the findings to justify the incorporation of reclaimed materials or design for disassembly.
Add to My Project
Quick Cite
Paragraph starter
Research by Ergun (2021) on Toronto's housing stock indicates that a significant percentage of demolition materials, particularly masonry, concrete, and framing lumber, are suitable for reuse and recycling. This highlights the potential for substantial environmental benefits, including reduced landfill waste and lower embodied carbon and energy consumption, by diverting these materials from disposal and reintegrating them into the built environment.
Source
Academic Publication
The potential environmental benefits of reusable and recyclable materials stocks in Toronto's single-detached housing
journal · 2021
View sourceQuestions About This Research
- What does the research say about toronto housing demolition yields significant reusable material stocks?
- Prioritize the design for disassembly and actively seek opportunities to incorporate reclaimed materials into new construction projects to reduce environmental impact. Evidence: Academic Publication (2021).
- Why does "Toronto Housing Demolition Yields Significant Reusable Material Stocks" matter for design?
- Understanding the volume and type of reusable materials available from existing building stock is crucial for developing effective waste diversion strategies. This insight informs design decisions by highlighting opportunities for material circularity and reducing reliance on virgin resources.
- How can designers apply this research?
- Prioritize the design for disassembly and actively seek opportunities to incorporate reclaimed materials into new construction projects to reduce environmental impact.
- What were the main findings?
- 61-66% of material volume in Toronto's in-use and annual obsolete housing can be reclaimed for reuse/recycling.. Masonry, concrete, and framing lumber from houses built between 1930-1960 are the primary recoverable materials.. Annual obsolete reusable materials represent significant embodied carbon (2,287-4,116 tonnes) and energy (52,883-95,189 GJ).
- What research method was used?
- Quantitative analysis and extrapolation.
- How strong is the evidence?
- Evidence strength is rated Strong effect, based on a 2021 journal from Academic Publication.
- What should I do differently in my next project?
- When designing new buildings or renovations, investigate local sources of reclaimed materials and design for ease of future deconstruction and material recovery.
- What are the limitations?
- The study's findings are specific to Toronto's housing stock and may not be directly transferable to other urban contexts without further investigation. Barriers to widespread uptake of reuse/recycling were identified but not fully addressed.