World premiere in Weißenhorn: First mobile 3D-printed basement in the world

A technological milestone is taking shape in Weißenhorn: for the first time worldwide, a basement is being realized directly on the construction site using a mobile 3D concrete printing process. This forward-looking project brings together the expertise of Rupp Gebäudedruck (executing construction company), INSTATIQ (mobile 3D concrete printer), Heidelberg Materials (3D printing concrete), Remmers (structural waterproofing), INOTEC (machinery technology for waterproofing solutions), and Liebherr (mobile energy supply). Together, they are launching the next stage of development in automated 3D concrete printing in Germany.

3D concrete printing with a mobile large-scale robot and digital precision

At the heart of the construction process is the INSTATIQ P1 (“Progress One”) – a mobile large-scale robot that elevates 3D concrete printing to a new technological level. The printer combines proven construction machinery technology with high-precision robotics and implements digital design data directly on site. With a reach of up to 26 meters and a printing speed of up to 10 centimeters per second, load-bearing concrete walls are created layer by layer directly on the construction site, without formwork but with millimeter-accurate precision.

“With the first mobile 3D-printed basement, we are showing that 3D concrete printing is now ready for more complex and highly stressed structures as well,” explains Markus Frasch, Managing Director of INSTATIQ. “Our mobile 3D concrete printer brings industrial manufacturing quality directly to the construction site – efficient, sustainable, and digital.”

3D printing concrete and waterproofing

A special concrete from Heidelberg Materials was used for the mobile 3D-printed basement in Weißenhorn, which was further developed specifically for mobile 3D printing. The ready-mix concrete used is characterized by optimal pumpability, high shape stability, and rapid strength development—decisive properties for the automated construction process with mobile printing systems. Heidelberg Materials draws on state-of-the-art plant technology at its new facility in Weißenhorn and at the same time uses the project to gain valuable insights into the requirements of future mobile 3D concrete printing projects.

Remmers contributed its extensive expertise in structural waterproofing and construction chemicals to the project and ensured a permanently reliable waterproofing of the world’s first mobile 3D-printed basement in the soil-contact area. The two-component, multifunctional structural waterproofing system MB 2K was used, which flexibly adapts to the geometry of the printed concrete surfaces and meets the highest requirements for watertightness and durability. Application was carried out using the spray method with the inoBE-AM M8 delivery pump from INOTEC, ensuring uniform and seamless waterproofing with efficient on-site workflows.

Efficiency meets sustainability thanks to mobile energy storage

A significant step toward sustainable construction site supply is achieved with the mobile energy storage system from Liebherr. On the construction site in Weißenhorn, the storage unit supplies, among other things, the 3D printer—and does so particularly efficiently: CO₂ emissions and noise pollution are significantly reduced, as the storage system delivers energy on demand instead of relying on a continuously running diesel generator. The fully electrified system technology and precise material use underscore the sustainable approach of the project partners: the technology reduces material consumption to what is actually required and significantly lowers CO₂ emissions compared to conventional masonry.

Practical implementation in Weißenhorn

Execution was carried out by Rupp Gebäudedruck, which completed the printing of the basement within just a few days. The INSTATIQ P1 was operational within only 60 minutes and printed the basement walls fully automatically based on a digital model.

“The basement is the foundation of every building—and now also the foundation of a new construction era,” says Michael Oßwald, Managing Director of Rupp Gebäudedruck. “The project in Weißenhorn shows how digital processes and mobile robotics are transforming shell construction—with the highest precision, less material, and clearly structured workflows.”

A milestone for the construction industry

With the world’s first mobile 3D-printed basement in Weißenhorn, the partner network demonstrates how digitally controlled concrete construction can now also be realized in complex structures. The result sets a new standard for automation, precision, and sustainability in building and structural construction—“Building the future. Directly on site.”