In a global first for large-scale digital construction, UCC Holding, in collaboration with Qatar’s Public Works Authority (Ashghal), has officially begun the printing phase of the world’s largest 3D-printed building project.
The initiative marks a significant leap in sustainable infrastructure development and positions Qatar as a regional pioneer in advanced construction technology, a media report on UCC Holding website said.
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The project involves the construction of 14 new public schools, including two to be built entirely using 3D printing technology. Each of the 3D-printed schools will span 20,000 square meters—making a combined 40,000 square meters—40 times larger than any previously completed 3D-printed building worldwide.
Designed as two-storey buildings on plots measuring 100 by 100 meters, the schools represent a landmark in educational architecture and scalable, future-ready infrastructure in the region.
World’s largest construction printers deployed
To execute this unprecedented build, UCC Holding partnered with COBOD, a Danish company recognised as a global leader in 3D construction printing. COBOD has supplied two custom BODXL printers, each measuring 50 meters long, 30 meters wide, and 15 meters high—comparable in size to a Boeing 737 hangar. These are currently the largest construction printers in the world.
Following months of site development, equipment assembly, and simulation testing, the printers are now fully operational.
Local expertise, global standards
UCC Holding has formed a dedicated team of architects, civil engineers, material scientists, and printer technicians to lead the operation.
Over the past eight months, the team conducted more than 100 full-scale test prints using a BOD2 printer at a trial site in Doha. These trials helped develop optimized concrete mixes suited to Qatar’s climate and refine a custom nozzle for high-precision printing.
In May 2025, the team completed intensive training with COBOD engineers, covering everything from printer operation and structural layering to live quality control—strengthening Qatar’s local capacity for high-tech construction methods.
Environmental and economic benefits
3D printing offers significant environmental, social, and economic advantages over traditional construction. The process reduces raw material waste, minimizes concrete use, and cuts carbon emissions. On-site printing also reduces transportation needs and supply chain dependency, while dramatically speeding up project timelines.
Printing is scheduled to take place at night to improve concrete performance and mitigate heat-related challenges—while also reducing dust, noise, and community disruption.
Design inspired by nature
Architecturally, the schools feature flowing, curved walls inspired by Qatar’s desert landscapes and sand dunes. These complex, organic shapes are made possible by the design freedom 3D printing allows—achievements that would be prohibitively difficult or expensive with conventional methods.
The two 3D-printed schools are expected to be completed by the end of 2025. The project not only signals Qatar’s growing leadership in innovation and sustainability but also sets a new benchmark for educational infrastructure development globally.
