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Spherical Cabin Utilizing Plastic Elements For Sustainable Public Sanitation

Author:
Adam Salacz
Spherical Cabin Utilizing Plastic Elements For Sustainable Public Sanitation

Project in-detail

Constructed as an elevated spherical structure, this facility employs innovative plastic elements and a nano-membrane toilet system to provide a self-sufficient solution for public sanitation in diverse environments.
5 key facts about this project
01
Elevated design adapts to varying terrains using binding poles.
02
Utilizes a nano-membrane toilet system for efficient waste management.
03
Constructed from lightweight plastic elements for rapid assembly.
04
Interior includes netted shelving for personal item storage.
05
Offers both sanitation and emergency shelter functionality.

The spherical public toilet cabin offers a new approach to public sanitation facilities. It is designed to serve various locations, enhancing the accessibility of restroom services while focusing on sustainable principles. The main idea is to change the way people feel about using public toilets, making the experience more pleasant and functional through its unique round shape.

Design and Adaptability

The structure is designed to adapt well to different environments. By elevating the cabin on binding poles, it can adjust to various terrains and surfaces. This raised design protects users from harsh weather, providing a dry entrance while placing them in a more open space compared to standard restroom booths. Its shape is easy to recognize, making it convenient for users to find.

Self-Sufficient Technology

A key feature of the cabin is its focus on self-sufficiency. It uses a nano-membrane toilet technology, which does not require electricity or running water. This system effectively separates dry waste from liquids, allowing the dry material to be turned into fuel. This fuel can provide energy for several functions, including charging devices or converting snow into water. The liquid waste is treated and recycled, promoting hygiene and resourcefulness.

Interior Functionality

The cabin's interior is designed for ease of use. As users enter, they find a wide bench with a toilet seat in the center, allowing for comfort during use. The walls include railings and netted shelves to make movement easy and offer storage for personal belongings. This careful layout enhances usability, ensuring that it serves everyone well, regardless of their situation.

Construction and Materials

Made from lightweight plastic tray-like elements, the cabin is pre-made for easy transport and quick assembly. The choice of materials supports the adaptable goal of the design, allowing for installation in various locations without the need for special tools. This approach to construction ensures that restrooms can be set up efficiently and effectively wherever needed.

The design includes thoughtful details, such as netted shelving and a unique waste management system, all aimed at improving the user experience and making public sanitation facilities more welcoming and functional.

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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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