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Gabion Walls and Etfe Membrane Roof in a Sustainable Mountain Retreat

Authors:
Piotr Czarnecki, Jędrzej Przyłuski, Alicja Tomaszewicz
Gabion Walls and Etfe Membrane Roof in a Sustainable Mountain Retreat
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Constructed with gabion walls and topped with an ETFE membrane roof, the retreat optimizes energy efficiency and harmonizes with its mountain environment, serving as a functional shelter for trekkers and climbers.
5 key facts about this project
01
Constructed using locally sourced gabion walls for structural integrity and environmental integration.
02
The roof features an ETFE membrane that enhances natural light while providing insulation.
03
Incorporates a trombe wall for passive solar heating, optimizing energy efficiency.
04
Designed with modular living quarters to adapt to varying group sizes and needs.
05
Includes renewable energy systems, utilizing solar panels and wind turbines for energy autonomy.

### Overview
The Himalayan Mountain Hut is strategically situated within the rugged terrain of the Himalayas, addressing the needs of trekkers and climbers while respecting the local environment. The design merges functional living spaces with the surrounding natural landscape, emphasizing sustainability and efficiency. It presents a contemporary interpretation of traditional mountain huts, utilizing local materials and promoting a layout that fosters both community interaction and individual privacy.

### Spatial Organization
The hut's design employs a square plan that optimizes spatial efficiency and functionality. It features a zoning approach that separates the living areas from utility functions, enhancing user comfort and hygiene. Key functional spaces include a recreation zone for socialization, expandable living quarters for trekkers and staff, and dedicated areas for kitchens, storage, and eco-friendly toilets. This organization promotes a self-sufficient lifestyle while ensuring adaptability for various occupancy needs.

### Material and Energy Strategy
The choice of materials reflects a commitment to minimal environmental impact and durability. Gabion baskets composed of locally sourced stones form robust walls that harmonize with the landscape. The roof incorporates ETFE (Ethylene Tetrafluoroethylene) membrane for light transmission and insulation, along with solar panels and wind turbines for renewable energy generation. A unique Trombe wall feature captures solar heat to maintain comfortable internal temperatures. The three-tier roofing system enhances natural ventilation and energy efficiency, contributing to the overall sustainability of the structure while ensuring resilience against harsh weather conditions.

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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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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 €
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Final registration deadline 30 October 2025

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