RENNER HAINKE WIRTH ZIRN ARCHITEKTEN & WDJARCHITECTEN

The reflection of the roof peaks creates a striking roof structure with powerful iconography. The semi-transparent, folded aluminum skin defines the fifth façade of the existing building. The variations in the density of the perforations, formed by triangular elements of different sizes, create a curtain-like spatial depth when viewed from a distance. The new lightweight roof extension with a perforated shell offers sustainability and low-maintenance comfort for passive sun protection, weather protection, and a wind barrier. The technical ventilation and archive cooling systems are combined under the translucent façade skin, which is particularly important due to the high-rise buildings in the immediate vicinity. The façade installation is quick and easy to implement. Old and new building structures reinforce each other in their contrast of solid strength and transparent lightness.

AG8 Architektur mit Yana Kyuchukova

The materiality and construction should remain as visible as possible and determine the atmosphere of the rooms. The use of system components for the roof and facade results in a simple, comprehensible construction. The arched roof is a cost-effective system roof from industrial construction. The two sheet steel shells are filled with mineral wool insulation on site and assembled within a few days. A steel girder, which remains visible from the inside, serves as the roof support. The construction rests on the monolithic masonry exterior wall.

Itten+Brechbühl AG

The detailed solution combines historical authenticity with modern technology: 168 modular elements with eight different types of glass blocks have been reinterpreted in line with today's building physics requirements. Copies modeled on historical glass prisms are integrated into double glass blocks filled with noble gas, preserving the filigree appearance and characteristic light guidance of the original roof. The complexity and precision of the solution is so extraordinary that the glass concrete company that carried out the work had the technology patented. This step underlines the innovative power and uniqueness of this reconstruction.

BIG - Bjarke Ingels Group

The submitted solution combines an innovative dragonscale photovoltaic roof, an integrated geothermal system and an open, flexible structural framework into a single, high-performing workplace concept. The rhomboidal glass tiles with prismatic coating trap more sunlight, reduce glare and generate energy for longer periods each day, while walkable, laminated panels enable safe maintenance and accommodate thermal expansion. Beneath the surface, the geothermal system reduces about 90% of the water needed for cooling compared with a traditional cooling tower system. Cruciform columns support the expansive canopy while keeping interior spaces open and adaptable, allowing modular “neighborhoods” that encourage both focus and collaboration. Together, these interlocking systems harness sun, earth and water, drastically improve resource efficiency and create a scalable, replicable model for regenerative, human-centric workplaces.

MET Architects GmbH SIA BSA

The reconstructed towers with onion domes on the Pestalozzi secondary school building are a significant detail in terms of both technology and monument preservation. Originally used to vent excess heat from the heating system and dismantled during the school's period of use, the reconstructed towers now serve to ventilate the attic in an energy-efficient manner. When CO2 levels rise, flaps in the towers and knee walls open automatically to allow natural air exchange. This system enables efficient fresh air supply and night ventilation without compromising the historical substance with mechanical systems. At the same time, the roof regains its original appearance and an appealing level of detail. The solution thus combines monument preservation with a sustainable, innovative indoor climate concept.

dunkelschwarz ZT GmbH

The structural use of wood in a station building was particularly challenging from a fire safety perspective in the area of the platform roofing, as electric diesel railcars enter under the roof. This was achieved through an innovative fire protection concept. The interpretation of the shed roof shape, which originally came from industrial halls, as well as the static and structural implementation with sloping wooden trusses, glass skylights, and steel pressure struts, is a technical feature of the project and also plays a central role in the architectural concept.

Grüntuch Ernst Architekten / capattistaubach urbane Landschaften

The first building block on the former power plant site in Berlin combines new working environments with ecological and social added value. The new office building will be extended to include a large roof park, which will extend from the ground floor to a height of 30 metres. On each level, the office space can be extended into the outdoor area thanks to large sliding doors, allowing indoor and outdoor spaces to flow into one another. To implement the conceptual design idea, all specialist planners had to work closely together to meet all biological and technical requirements. The greenery is not merely decorative, but a structural component of the building. A new structural solution was developed to secure the large trees against storms: steel planting chairs were mounted on the reinforced concrete ceiling and are thus part of the supporting structure. As the trees grow, their roots anchor themselves in the open spaces, creating a structural-botanical unity of plant and construction.

Dominique Coulon & associés

The engineering finesse of this majestic glass roof could almost make you forget its size and the technical feat it represents. Covering an area of 28 x 15 m, it is made up of V-shaped beams and has a span of 13.7 m between supports. These beams also serve as gutters to collect rainwater. The thickness of the lower part of the beams is reduced to 12 cm, giving the whole structure a paradoxical lightness. It is visually impossible to distinguish the opening modules from the others. 70 of the modules are electrochromic and become opaque to protect the building from heat. The ends of the modules are set back from the concrete structure so that the end crossbars cannot be seen, as is the case with the night lighting, which is also set back. This Corbusian stained-glass window echoes the factory designed a few streets away by the architect in 1946 and far transcends its primary function as a roof. It is a sensitive manifesto that affirms that color is an integral part of architecture.

Barkow Leibinger

The detailed solution is based on a precisely engineered roof construction that plays a central role in terms of statics and space. Radially arranged glulam beams run from the outer walls and inner supports to the hexagonal skylight, forming a fan-shaped supporting structure. This arrangement allows for larger spans and creates an open, clear spatial effect in the auditorium. The interior supports are positioned in a ring and serve as pivot points for the different beam angles created by the fan-shaped arrangement. The skylight forms the structural and functional focal point: it ensures even distribution of daylight, uses a textile diffuser construction to scatter the light, and served as the central crane location during the construction phase. The roof also incorporates extensive greenery and a photovoltaic system, which covers part of the electricity requirements and improves the microclimate.

Königs Architekten PartGmbB

The uniqueness of the roof construction results from the combination of two components: 24/7 public use of the roof and an innovative supporting structure made of beech wood. The sports and activity roof creates a traffic-protected recreation area for the entire community. At the same time, the roof itself is a special structural feature. Truss girders made of beech wood with staggered stair connections efficiently transfer the loads to external V-supports. This connection technique is being used for only the second time in Germany and enables a high load-bearing capacity with significantly reduced cross-sections. Despite the fire and earthquake safety requirements, the result is a lightweight, transparent supporting structure that enables public use of the roof and sets new standards in timber construction.