Friday, January 9, 2026
Located in Mülheim, western Germany, the Airship Hangar Mülheim has become a striking example of advanced timber engineering and sustainable construction. Completed at the end of 2022, the hangar serves as a maintenance and winter storage facility for the WDL Luftschiffgesellschaft, continuing the legacy of airships, which may no longer dominate air travel but still captivate attention as flying billboards.
This innovative building replaced a former lightweight textile hall and brings together state-of-the-art structural design, digital modelling, and circular material strategies. It is a benchmark in sustainable architecture, showcasing how modern design and technology can transform a historic aviation structure into a cutting-edge, eco-friendly facility.
The new hangar’s design and construction were influenced by several constraints. Authorities permitted only a replacement structure, meaning the footprint and curved profile of the original building had to be maintained. However, in contrast to the old steel structure, the new hangar was built using timber. The result is an elegant yet industrial aesthetic, expressed through a truss system crafted from engineered timber.
The project was developed by Ripkens Wiesenkämper, with structural design using ALLPLAN’s integrated BIM workflow. Smyk Fischer, the architects, worked with the engineers to create a truss solution comprising 15 two-hinged arches, each 26 metres high. The roof features a cross-laminated timber (CLT) shell with aluminium cladding. Notably, the hangar’s double-leaf door, weighing 72 tons per wing, required precise engineering, with Dr Schippke + Partner delivering the complex door mechanism, incorporating 80-horsepower electric motors for operation.
Beyond its aesthetic and functional features, the hangar is a prime example of sustainable construction. By using 557 tons of spruce, approximately 156 tons of CO₂ were saved, compared to a comparable steel structure. This timber frame and aluminium skin are designed for demountability, ensuring that the building components can be reused or recycled in the future.
A key feature of the sustainable design is the Madaster material database, which documents the components in a building resource passport, facilitating their reuse or recycling at the end of the building’s life. Notably, several elements of the structure are already second-hand: the substructure reuses foundations from the original hall, and the floor incorporates concrete slabs salvaged from a former logistics centre.
The adoption of circular economy principles extends to both the materials used and the building’s operational philosophy, creating a modern green space in a sector traditionally associated with more resource-intensive materials.
The design and construction process was made highly efficient using ALLPLAN’s integrated BIM (Building Information Modeling) technology. Engineers created a 3D model that incorporated every critical connection and complex zone, which was key in clash detection, resolving any potential conflicts early in the process. This also enabled precise material and cost estimation, with the 3D model directly supporting foundation reinforcement and formwork drawings.
The ability to design and collaborate in real-time using cloud-based technology was crucial for this ambitious project. The seamless interaction between the team of engineers, architects, and construction professionals ensured that the design was executed with remarkable precision.
The Airship Hangar Mülheim has gained industry recognition for its innovative use of timber engineering and commitment to sustainability. Among the accolades received are the Ernst & Sohn Engineering Award, the Architecture Award, the Timber Construction Award NRW, and most recently, the 2024 German Engineering Award.
In addition to the technical and design excellence, the hangar has brought significant economic and cultural value to the city of Mülheim. It serves not only as a milestone in modern timber construction but also as a unique event venue. On days when airships are not in operation, the hangar can host up to 1,500 guests, making it a multi-functional space for cultural and corporate events.
The Airship Hangar Mülheim represents a major step forward for sustainable architecture. Its use of timber, digital precision, and circular economy principles demonstrates that modern construction can be both innovative and environmentally responsible.
This project has helped highlight the potential for timber engineering to play a central role in the future of sustainable building practices, particularly in the context of eco-friendly infrastructure and green technology. It exemplifies how digital design and advanced materials can be integrated to produce architectural masterpieces that are both functional and environmentally sound.
As cities and industries continue to explore more sustainable construction methods, the Airship Hangar Mülheim stands as a symbol of what is possible when traditional materials like timber meet modern technology.
The Airship Hangar Mülheim is not only a historic aviation icon but also a beacon of sustainable construction. With its innovative timber design, precision engineering, and circular construction principles, the hangar sets a new standard for green architecture. As a multi-award-winning structure, it proves that the future of construction is both sustainable and innovative, paving the way for more projects that harmoniously blend form, function, and environmental responsibility.
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Tags: Airship Hangar Mülheim, eco-friendly building, German Engineering Award, Timber Engineering, timber truss system, woodworking industry, woodworking UK
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