How can a new 20,000-seat stadium in Berlin use a circular hybrid timber–concrete design and reused materials to become a climate-neutral, inclusive sports park integrated into the park landscape?

Design Concept

The core design concept, 'JAHNSPORTPARK FÜR ALLE,' maintains the fundamental structure of the site (paths, entrances) while grouping new, compact buildings (Stadium, Multihalle) around a central 'Grüne Mitte' (Green Center) hub. The stadium is shifted closer to Eberswalder Strasse to create a strong urban address, while the articulation of the complex integrates passive strategies and extensive greenery to harmonize with the adjacent Mauerpark ecosystem.

Structure and Engineering

The structural strategy is based on an integrated hybrid system and principles of resource reuse ("Urban Mine").

• Primary Structure: The stadium roof structure utilizes large glue-laminated timber trusses cantilevered from double timber columns, significantly minimizing the embodied carbon footprint. The seating tiers and concrete system use aggregates derived from crushed concrete of the demolished existing stadium.
• Structural Reuse: Steel cantilever beams from the old stadium roof are disassembled and reused as large-span trusses for the roof of the new Multipurpose Hall, ensuring a column-free span and supporting an artificial turf football field on the roof.
• Accessibility: Full inclusivity is structurally integrated via circulating ramps that provide barrier-free access to all seating levels and vertical transportation via elevators.

Sustainability (Regeneration/Resilience)

The project prioritizes climate neutrality and regenerative design, employing a "Cradle to Cradle" approach to resource management.

• Carbon Sequestration/Reduction: The high volume of structural timber is projected to reduce the CO2 emissions of the primary structure by approximately 75%.
• Energy Production: The stadium roof integrates a Photovoltaic (PV) array.
• Water Management & Biodiversity: Extensive green facades and roofs (on the Multihalle and other buildings) and numerous retention basins are specified for rainwater storage, improved urban microclimate, and the promotion of biodiversity.
• Ecological Integration: Parts of the facades of the buildings and the two iconic, retained floodlight masts are structurally repurposed as breeding habitats for birds and bats.

Urban Integration and Spatial Experience

The masterplan is defined by intuitive, inclusive circulation that transforms the area into a continuous public space.

• Circulation: A 1.2 km long "Lauf- und Rollband" (Running and Rolling Track), made of shock-absorbing EPDM, connects all leisure sports offerings. The track is designed with a maximum 4% slope to guarantee barrier-free access across the site.
• Urban Impact: The central Grüne Mitte acts as a distributor and meeting place, supported by retail (Café Pavilion). The stadium's relocation and architectural articulation provide a strong new civic address on Eberswalder Strasse.
• Spatial Qualities: The structure organizes circulation around an exterior 'Canyon' for rapid egress, with separate access for VIPs, ensuring functional separation of zones.