Circular Construction for Eco-Building

The 7R Principle in Circular Construction

The 7R principle is a framework to guide builders in addressing resource management. It stands for Rethink, Refuse, Reduce, Reuse, Repair, Remanufacture, and Recycle. These principles encourage shifting from the traditional linear “take-make-dispose” model towards a circular economy where resources are used for as long as possible.

• Rethink – This involves re-evaluating current sustainable business practices and finding ways to improve resource efficiency.
• Refuse – The first step to reducing waste is refusing unnecessary materials or products that will eventually end up in landfills.
• Reduce – By designing buildings and infrastructure focusing on efficiency, materials can be used more sparingly, reducing overall resource consumption.
• Reuse – Materials should be designed for reuse to extend their lifespan and minimize waste generation.
• Repair – Instead of discarding damaged materials, circular construction promotes repair and maintenance to prolong their use.
• Repurpose – When materials reach the end of their useful life, they can be remanufactured into new products or components instead of being thrown away.
• Recycle – As a last resort, recycling should be used to recover materials from products that can no longer be reused or repaired.

Benefits

There are many benefits to implementing circular construction practices in the industry. Some of these include:

• Reduced Waste – One of the biggest advantages of circular construction is that it significantly reduces waste generation by utilizing a closed-loop system, where materials are reused and recycled instead of being discarded after one use.
• Extended Lifespan – Circular construction focuses on using high-quality materials that are durable and easily reusable. It leads to longer-lasting buildings and infrastructure, reducing the need for constant maintenance or replacement.
• Cost-Effective – By reusing materials and reducing waste, circular construction can ultimately lead to cost savings for builders and clients.
• Reduced Carbon Emissions – Construction significantly contributes to carbon emissions, but by implementing circular principles, the industry can reduce its environmental impact and contribute to mitigating climate change.
• Flexibility – Circular construction allows for flexibility in design and adaptability of buildings and infrastructure over time. Materials can be easily disassembled and reused for different purposes without compromising quality or integrity.
• Innovation – Circular construction encourages innovation in the industry as builders constantly look for new and creative ways to repurpose materials and reduce waste. It can lead to new technologies and practices that benefit the industry.

Implementation Challenges

While circular construction has many benefits, it also presents some challenges for implementation. Some of these include:

• Availability of Materials – A major challenge is the availability of recycled or renewable materials in certain areas or for specific projects. Builders may need to source materials from different locations or explore alternative options.
• Change in Mindset – Circular construction requires a shift in mindset and approach to building, which may be difficult for some builders and clients who are used to traditional construction methods.
• Cost and Time – Implementing circular principles may lead to higher costs and longer construction times as builders adapt to new practices and technologies. However, cost savings from reduced waste and material reuse can offset this in the long run.

Tips to Implement Circularity in Your Projects

Here are some tips to help you implement circular construction principles in your projects:

Consider Reusability from the Start

The circular process starts with the building’s design. Consider how materials can be easily disassembled and reused in the future. Close collaboration between architects and contractors is required during the design phase.

Foster Sustainable Collaborations

Circular construction involves collaboration between multiple stakeholders, including builders, designers, suppliers, and clients. Cultivate sustainable partnerships to ensure the continuous application of circular principles throughout the project.

Source Sustainable Materials

When sourcing materials for your projects, look for recycled or renewable options. Many sustainable building materials, such as recycled steel, bamboo, and reclaimed wood, are available today and can contribute to green building.

Assign a Residual Value to Your Products

Assigning a residual value to construction materials can encourage reuse or repurposing. It will also promote using high-quality, durable materials with a higher residual value.

Implement Digital Platforms

Digital tools can help track and manage materials throughout construction, making identifying opportunities for reuse or recycling easier. These platforms can also facilitate collaboration between stakeholders since all coordination activities and information sharing can be done in one place. It’s also a great way to reduce waste from paper-based correspondences.