In a remarkable intersection of tradition and technology, Hope Village in Kibaha, Tanzania, is set to redefine sustainable architecture with its groundbreaking use of 3D printing and earth-based materials. This project, spearheaded by renowned architecture firms Hassell and ClarkeHopkinsClarke, in collaboration with the charity foundation One Heart, represents a pioneering effort in constructing a community designed to offer sanctuary and support to children from challenging backgrounds across Tanzania.
Hope Village’s design features an innovative approach to building with locally sourced soil, moving away from conventional concrete and cement. The community center, envisioned as the village's centerpiece, will utilize a 3D printer to create walls from soil collected within a 25-kilometer radius of the site. This approach not only reduces the environmental impact but also leverages traditional building materials in a modern context. The use of a thin wire mesh embedded within the soil layers enhances the structural integrity of the walls, which are designed to be porous, allowing for natural ventilation and light.
Xavier De Kestelier, Hassell’s head of design and innovation, described the motivation behind this choice of material: “We wanted to ensure that we’re able to create walls that could ventilate the building, but at the same time also bring in light.” The 3D printing technique permits the creation of intricate, curved wall designs that are both aesthetically pleasing and functionally efficient, a significant departure from the flat, compacted walls of traditional rammed earth constructions.
The community center’s construction will involve a cantilevered roof supported by a metal framework, designed to shield the earth-printed walls from rain and erosion. This innovative roof will be crafted from locally sourced timber, assembled on-site before being placed over the structure like a protective tent. The approach reflects an integration of modern technology with vernacular design principles, ensuring durability while remaining environmentally conscious.
This project is part of a broader trend in architecture that embraces sustainable building practices. Previous ventures, such as TECLA in Italy and the BioHome3D in Maine, have demonstrated the potential of 3D printing with natural materials. TECLA, constructed from locally sourced clay and fibers, highlighted the viability of earth-based materials in modern architecture. Similarly, the BioHome3D utilized bio-based materials to create a fully sustainable home, reinforcing the growing movement towards environmentally friendly construction.
Hope Village will serve a dual purpose: providing essential services to vulnerable children and promoting a model of sustainable living. The project will offer educational facilities, accommodation, and skills training for girls aged 3 to 18. Additionally, the site will include farming areas, sports facilities, and recreational spaces, fostering a holistic environment for growth and development.
Mark Loughnan, principal and head of design at Hassell, emphasized the project’s potential impact: “It’s our first go at what we hope will prove to be a successful methodology.” The intention is not only to create a functional and supportive environment but also to leave behind the technological tools and knowledge for future construction efforts. Local training in 3D printing will empower the community to continue developing their infrastructure sustainably.
Dr. Consola Elia, who will oversee the children’s home at Hope Village, described the project as “the reality of a dream that I’ve had for over 20 years.” As construction progresses, Hope Village stands as a testament to the possibilities of integrating traditional materials with cutting-edge technology to address modern challenges, aiming to set a precedent for future architectural endeavors.
