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Community Center with Thermal Mass and Green Roof Integration

Authors:
Donald Paine, Matthew Noe, Tony Wang
Community Center with Thermal Mass and Green Roof Integration
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With its unique spiral form and emphasis on thermal mass, the building integrates a green roof to enhance sustainability while serving as a vital community center.
5 key facts about this project
01
Unique spiral form enhances natural airflow and ventilation.
02
Thermal mass reduces heating and cooling needs through energy efficiency.
03
Green roof provides insulation and fosters outdoor community engagement.
04
Designed with southern-facing windows for optimal sun exposure in winter.
05
Integrated features support multipurpose community activities and gatherings.

The eSPIRAL SPIRALA COMMUNITY CENTER is located in an area that emphasizes sustainability and community involvement. The design takes cues from the natural world, especially the spiral shapes seen in seashells and fronds of ferns. Functioning as a community hub, the center supports social gatherings and collective activities while prioritizing energy efficiency.

Design Concept

The design incorporates passive heating and cooling techniques that enhance comfort without heavy reliance on energy sources. Southern-facing windows are configured to collect sunlight in winter, which provides warmth. During summer, roof overhangs block excessive solar heat. This careful balance leads to a comfortable environment throughout the year.

Building Form and Thermal Mass

The form of the building is embedded into the earth, using its natural thermal mass to help regulate temperature. It absorbs heat during the day and releases it slowly at night. This feature reduces the need for artificial heating and cooling, showcasing an effective way to minimize energy consumption while improving comfort.

Community Integration

The layout of the center supports a range of activities. It includes spaces such as a southern solar lobby, multipurpose areas, and a kitchen, as well as restrooms. The arrangement promotes interaction among visitors. By designing the space with community functions in mind, the center fosters a sense of belonging for its users.

Site and Surroundings

The site plan includes important infrastructure like electricity, potential eco homes, and water sources such as ponds and boreholes. The design takes into account the natural slope of the landscape, which enhances the integration of the building with its environment. This connection not only benefits the design but also improves its energy efficiency.

The green roof acts as both insulation and a space for outdoor activities. It encourages interactions among community members and strengthens their connection with nature, embodying the center's mission to foster community relationships within a natural setting.

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The Buildner’s Unbuilt Award 2025: Celebrating Architectural Creativity and Visionary Unbuilt Designs with a Total Prize Fund of €100,000

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Competition organisers

The Buildner’s Unbuilt Award 2025 is an international architecture competition dedicated to recognizing and celebrating the value of unrealized architectural designs. It invites architects, designers, and students worldwide to submit visionary projects that have not yet been constructed, highlighting the power of ideas and the creativity behind the design process. By focusing on unbuilt work, the competition aims to bring forward concepts that shape the future of architecture and push the boundaries of the profession. 

Participants can compete in three categories based on project scale: Small Wonders (up to 100 m²), Medium Marvels (101–999 m²), and Large Visions (over 1,000 m²). Each category winner will receive €20,000, and additional prizes include honorable mentions, student awards, and a special Best Presentation Award. Winning projects will gain significant international exposure through Buildner’s publicity campaign and a feature article on ArchDaily, providing a unique opportunity to showcase creative ideas to a global audience. 

The Buildner’s Unbuilt Award 2025 encourages entrants to submit any type of unbuilt project, from conceptual visions to detailed designs, celebrating bold innovation without the constraints of realization. Important deadlines: registration closes on October 30, 2025; submissions are due by November 20, 2025; winners will be announced on December 17, 2025.

Buildner's Unbuilt Award 2025

Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 October 2025

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