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Pollution-Eating Concrete and Geothermal Systems in a Communal Gathering Space

Author:
Naomi Taniguchi
Pollution-Eating Concrete and Geothermal Systems in a Communal Gathering Space

Project in-detail

Constructed with pollution-eating concrete and equipped with geothermal systems, the building serves as a central gathering space designed to foster community interaction and environmental awareness.
5 key facts about this project
01
Pollution-eating concrete actively reduces air pollutants.
02
A central oculus illuminates the main hall and connects to nature.
03
Fixed concrete benches promote communal interaction without clutter.
04
Geothermal systems enhance energy efficiency for heating and cooling.
05
Extensive glass walls create transparency and visual connectivity.

The Spirala Community Home is designed as a gathering place for people from various backgrounds. Located in a landscape that blends agricultural fields with natural elements, the building focuses on fostering social connections among residents. The concept emphasizes a central hub where community activities take place, supporting an environment of inclusivity and shared experiences.

Main Hall and Oculus

At the heart of the Spirala Community Home is the main hall, a spacious area intended for activities like gatherings, performances, and workshops. This hall features extensive glass walls, which allow abundant natural light to fill the space and create a connection with the outdoors. A central oculus sits above the hall, drawing attention upward and enhancing the feeling of openness. This design element not only serves a functional purpose by illuminating the area but also invites users to appreciate the sky above.

Circulation and Interaction

The circulation spaces around the main hall are thoughtfully designed to allow easy movement for all visitors. These pathways connect different parts of the building, making it accessible for everyone. Minimal interior partitions encourage a sense of openness, while fixed concrete benches create informal seating that promotes social interaction without overwhelming the space with additional furniture. This setup invites community members to engage comfortably with one another, fostering a welcoming atmosphere.

Sustainability and Material Use

Sustainability plays a significant role in the Spirala Community Home’s design. The building incorporates pollution-eating concrete in its foundational and supporting walls. This type of concrete actively works to break down air pollutants using a chemical process activated by sunlight. Additionally, electrochromic glass is used to manage the amount of solar energy entering the building, contributing to energy efficiency by minimizing reliance on heating and cooling systems. A geothermal heating and cooling system further enhances sustainability, while solar panels provide necessary power, aligning with modern ecological goals.

Site Integration and Nature

The design successfully integrates the community home with its natural surroundings. Olive and fig trees are carefully placed around the site, enriching the landscape while establishing a visual and physical connection to nature. The design considers ecological responsibility, creating an inviting atmosphere that encourages residents to engage with both the building and the outdoors. The round shape of the building enhances this relationship, allowing for various outdoor experiences that promote interaction among users and the natural environment.

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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
competition now

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