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Polyhex Sanctuary with Treated Wood Cladding and Efficient Waste Management

Author:
Kateryna Cherednyk
Polyhex Sanctuary with Treated Wood Cladding and Efficient Waste Management
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The polyhex structure, crafted with treated wood cladding and designed for modular assembly, provides climbers at the Khumbu glacier with a sustainable and user-friendly toilet facility.
5 key facts about this project
01
Polyhex shape reflects local glacier formations.
02
Modular assembly enables quick setup and removal.
03
Solar panels provide off-grid energy for services.
04
Waste management system includes an autonomous tank.
05
Treated wood cladding creates a warm interior atmosphere.

The Everest Base Camp Toilet is a thoughtful response to the specific challenges of sanitation in high-altitude areas. Located at the base of the Khumbu glacier in Nepal, the facility is designed for climbers who pass through the region. The design concept draws inspiration from local natural features, particularly its polyhex shape reminiscent of a snowflake. This choice connects the building to its environment, blending functionality with an element of beauty.

Design and Construction

This structure focuses on being easy to assemble and disassemble, which is crucial in harsh mountain conditions. A metal frame supports the facility, reinforced with cables for added stability. This careful construction allows the toilet to withstand the area's constant movement. The facility will only be in operation for a limited time each year, and helicopter transport will be used to deliver and remove all prefabricated components.

Functional Layout

The layout includes specific areas for toilet facilities and maintenance, ensuring that climbers have a comfortable experience. Each part of the design reflects a deep consideration for usability in such a challenging environment. Users will find essential features designed for accessibility and convenience, meeting the varying needs of different climbers.

Sustainable Technology

Solar panels provide energy for heating water, lighting the space, and optional floor heating. This sustainable approach reduces the environmental impact of the facility, while still offering necessary services. These energy-efficient features showcase how modern technology can align with the natural surroundings, balancing use with respect for the environment.

Waste Management

To address waste disposal, the design includes a cassette bio toilet with an autonomous receiving tank. This system is easy to transport and drain, making it suitable for the remote location. Plans for waste management involve removal for further processing, such as turning waste into biofuels or fertilizers, promoting a circular method of resource use.

The interior design features treated wood cladding, creating a warm and inviting atmosphere that contrasts with the cold, rugged environment outside. This design choice enhances user experience, encouraging a feeling of comfort. Large transparent doors allow occupants to enjoy stunning views of the surrounding landscape while maintaining privacy, ensuring that the facility is not only practical but also aesthetically pleasing.

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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.

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100,000€ Prize / 2025 ideas COMPETITION
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