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Floating Greenhouses with EPS Framework for Urban Ecology

Authors:
Jovana Stefanović, Viktorija Čeliković, Željko Mijušković, Nikola Stanišić
Floating Greenhouses with EPS Framework for Urban Ecology

Project in-detail

Featuring an innovative EPS framework, floating greenhouses enhance both ecological restoration and public access along Belgrade's waterfront, providing vital communal spaces for interaction and recreation.
5 key facts about this project
01
Floating structures designed to adapt to changing water levels.
02
Incorporation of a closed EPS cell system for buoyancy and insulation.
03
Maximized sunlight absorption through varied geometric forms.
04
Use of polyurea for enhanced durability against environmental exposure.
05
Community-focused layout encourages public interaction and engagement.

Aquaville is an architectural design located along the Belgrade waterfront, where the Sava and Danube rivers meet. The aim is to address urban planning issues while improving public access to the waterside. Mini floating greenhouses are introduced as part of the landscape, drawing on local splavovi culture, where rafts are often used for social gatherings. The design emphasizes sustainability and community involvement, focusing on restoring the natural environment.

Materiality

At the core of Aquaville’s structure is expanded polystyrene, often referred to as EPS. This material is lightweight, made up of about 98% air within a network of closed cells. It provides the necessary buoyancy for floating elements while also being environmentally friendly. The design incorporates protective coatings of concrete and polyurea, offering additional durability against environmental wear and tear. This thoughtful combination of materials helps ensure long-term performance while contributing to energy efficiency.

Sunlight Optimization

The buildings in Aquaville are designed to make the most of natural light. The cube form allows sunlight to penetrate about 30% of its surfaces, while the cylindrical shape increases this to roughly 70%. The half-spherical design maximizes sunlight exposure, reaching an absorption rate of 85%. By prioritizing daylight, the architecture not only improves energy efficiency but also enhances comfort within the spaces.

Community Engagement

Aquaville addresses the challenge of limited urban spaces by creating shared public areas. Replacing existing nightclubs with eco-friendly structures, the project encourages community interaction and provides new recreational zones. This initiative emphasizes the need to connect city dwellers with nature, fostering a sense of belonging and enhancing the overall urban experience.

The design culminates in a series of thoughtfully arranged floating greenhouses that offer practical benefits while being visually appealing, contributing to the ecological revitalization of the riverside and inviting sunlight into everyday life.

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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
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