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Circular Structure Crafted with Recycled PET Insulation for High-Altitude Shelter

Authors:
Rafael Atri, Rafael Atri, Rodrigo De La Cerda, Abraham Cohen
Circular Structure Crafted with Recycled PET Insulation for High-Altitude Shelter
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Utilizing recycled PET for insulation and a circular design for enhanced wind resistance, the shelter provides a sustainable and functional refuge in a high-altitude environment.
5 key facts about this project
01
Utilizes recycled PET bottles as structural insulation to enhance thermal performance.
02
Incorporates a circular design for optimal wind resistance in harsh climates.
03
Modular layout allows for flexible usage and adapts to varying occupancy levels.
04
Features a wind energy system to power essential functions sustainably.
05
Emphasizes local materials and construction methods to minimize environmental impact.

## Overview

Located in the Himalayan region, the Mountain Hut project addresses the unique challenges of high-altitude living, providing essential shelter for trekkers and climbers navigating the rugged terrain. This design seeks to create a functional and inviting refuge that capitalizes on the surrounding natural environment while promoting self-sufficiency for its users. The hut's conceptual framework integrates practicality with aesthetic considerations, balancing the needs for durability and comfort in a harsh climate.

## Structural and Spatial Innovation

The hut employs a circular geometry to enhance structural stability and wind resilience, reducing the impact of extreme weather conditions while evoking traditional architectural forms common in mountainous cultures. The internal layout is designed for optimal user experience, featuring access points that facilitate movement through communal areas, bunk spaces, and private accommodations organized around a central core. This arrangement encourages social interaction among occupants, enhancing the sense of community.

## Material Selection and Sustainability

The choice of materials reflects a commitment to sustainable design practices suitable for the alpine environment. High-tech fabric provides a lightweight and weather-resistant outer covering, complemented by polyethylene tarp for insulation. Recycled PET bottles serve as thermal mass and structural components within the walls. Steel mesh and poles form the internal frame, while mud brick can be utilized where local conditions allow. Emphasizing local sourcing and minimal environmental impact, the construction process is designed to conserve resources while ensuring the long-term viability of the hut. Additionally, integrated systems for energy generation and water collection enhance operational independence, reinforcing its commitment to sustainability and self-sufficiency.

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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.

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

100,000€ Prize / 2025 ideas COMPETITION
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