Circular Economy: Material Flows and Sustainable Materials – Practical Applications

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Earthship Biotecture: Homes Made from Waste Materials

Earthship Biotecture is an innovative and evolving architectural concept pioneered by Michael Reynolds that centers on radical self-sufficiency and circular design. Earthships are autonomous homes built primarily with natural and upcycled waste materials, such as tires packed with earth, cans, and bottles.

Each structure integrates comprehensive systems for thermal heating/cooling, water harvesting/treatment, solar/wind energy generation, and on-site food production (via internal greenhouses). This approach minimizes reliance on public utilities and external resources, serving as a powerful, influential model for off-grid and climate-resilient housing globally.

The video tells the history of the movement, what the building process looks like and finished Earthship from New Mexico and all over the world.

Core Design Principles and Unique Features

Earthship Biotecture is defined by a set of core principles that integrate architecture with ecology to achieve radical self-sufficiency. These autonomous homes are designed to meet all utility and food needs using six fundamental, interconnected systems, effectively turning the building into a regenerative, off-grid ecosystem.

• Building with Natural and Recycled Materials: Structures primarily use rammed earth tire walls for thermal mass, stability, and fire resistance, alongside bottles and cans to manage waste streams and minimize reliance on conventional, resource-intensive construction materials.
• Passive Solar Design: The unique horseshoe-shaped footprint with sun-facing windows and massive earth walls captures, stores, and regulates interior temperatures, drastically cutting the energy required for heating and cooling.
• Renewable Energy Generation: On-site systems utilizing solar panels and wind turbines generate electricity, supporting complete off-grid living while minimizing energy consumption.
• Water Harvesting and Storage: Rainwater and snowfall are collected from the roof, filtered, stored, and then reused in up to four different applications (drinking, washing, and irrigation).
• Interior Sewage Treatment: Water is reused via two integrated systems: greywater is processed through indoor botanical cells (constructed wetlands) for use in irrigation and toilet flushing, and blackwater is treated safely.
• In-home Food Production: Integrated greenhouses, often running the length of the sun-facing wall, utilize recycled water to allow residents to grow organic produce year-round, promoting independence and ecological stewardship.

Further reading, learning and references

Michael Reynolds – Earthship Biotecture https://earthship.com/

BBC ‘It was a pie-in-the-sky ridiculous idea’: The US homes made from waste materials https://www.bbc.com/travel/article/20241002-the-us-homes-made-from-waste-materials

© Daniel Mossberg, CEMUS, Uppsala University and Sonali Phadke, studio Alternatives and Stephanie Foote