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Neuer Kanzlerplatz office area, business building in Bonn, Germany, pictures, architects, design
February 8, 2024
Architect: JSWD
Location: Bonn, Germany
Photo © HG Esch
Photo: HG Esch, Christa Lachenmaier and JSWD
German New Chancellor Square Office Area
JSWD proudly presents New Principal Plaza, a new office building in Bonn, Germany. In 2015, as part of the city’s development qualifications process, the city proposed a concept for a new office tower at the intersection of a heavily trafficked highway and wide railroad tracks. JSWD was awarded the contract in conjunction with Art-Invest Real Estate.
Photo © HG Esch
Located to the south of Bonn’s city centre, at the intersection of the former government district and the city’s “Museum Mile”, the new buildings on Bundeskanzlerplatz complement the existing high-rise complex, which includes the Postal Tower (Helmut Jahn), the “Langeorgen” (English) : “Long Eugene”; a high-rise building that formerly housed the German Parliament Egon Eyremann) and other United Nations buildings. The consistent facade structure makes the three buildings form a visual entity. A slender vertical tower rises from one of the buildings and appears to float above the glass foyer. This high-rise office tower has 28 floors and a vertical height of more than 100 meters, anchoring the office building in the city skyline.
Photo © HG Esch
Breaking through urban barriers
In terms of urban planning, it is particularly noteworthy that the project eliminates the “obstacle” caused by the previous building – the long-vacant 18-storey Bonn Center. For nearly 50 years, the building has been a feature of the city’s landscape, blocking roads and views.
Photo © JSWD
The three new buildings have an irregular layout and are nestled into the corners of the triangular plot. This creates an outdoor public space in the middle where people can walk freely, thus establishing a connection with the neighboring residential areas. The new town square faces the Rhine and the United Nations district, where the famous office building address and its equally impressive driveway are located. Danish artist Jeppe Hein created an open spiral installation called “Mirror Pavilion” specifically for the Neue Kanzlerplatz Center.
Photo © Christa Lachenmeier
With its flexible and dynamic working environment, the campus provides space for interdisciplinary exchanges and encounters, while restaurants and cafés provide added value to office workers and residents of the surrounding community.
Photo © Christa Lachenmeier
Statics: spatial efficiency of facades and supporting structures
In Buildings 2 and 3 (floors 5 to 7), the white façade grid consists of load-bearing precast concrete elements. This makes constructive use of the depth of the elements while ensuring that the office has no columns or supports that protrude into the interior.
Photo © HG Esch
In high-rise buildings, load-bearing reinforced concrete skeletons are integrated into the glass surfaces. The geometry of the facade structure was created with the help of glass fiber reinforced concrete insulated panels.
Photo © HG Esch
The concrete facades extend only behind the glass curtain walls of the three building foyers. The façade concept also continues inside: the cladding on the ceiling and rear wall also consists of triangular fiberglass-reinforced concrete elements. In the three-story foyer of a high-rise building, these elements are 11 meters long. Here, four slender hinged supports bear the load of the upper storey that projects above the foyer and thus appear to float above it.
Photo © Christa Lachenmeier
Façade: coordinated concrete formula and vivid geometry
The façade grid is made of opalescent acidified architectural concrete with a double layer of hydrophobic coating. Its design connects all three buildings to create a harmonious whole while minimizing the use of formal means. In the high-rise building – unlike the other two buildings – the facade panels extend two levels around the base of the high-rise, effectively spanning three levels. This feature emphasizes the height of the building.
Photo © Christa Lachenmeier
As the viewer moves and therefore changes their perspective, the geometry of the façade structure constantly changes, sometimes appearing more compact and sometimes more open. By coordinating different concrete recipes, it was possible to create the same surface appearance despite different construction methods and the fact that load-bearing facade supports and non-load-bearing facade panels were constructed at different times.
Sustainability aspects
Many sustainability aspects were taken into consideration during the project planning phase. All three buildings have green roofs and photovoltaic systems will also be installed. The building is heated via district heating and concrete core tempering. The external sunshade is automatically controlled, and the sunshade blinds have astigmatism function. Integrated daylight and artificial lighting planning results in the use of presence detectors within buildings and automatic adjustment of lighting levels based on ambient brightness. Other factors that increase building efficiency include the use of LED lighting, water-saving fixtures and ventilation systems with waste heat recovery. The use of renewable and locally sourced raw materials was also considered.
All buildings are LEED Gold pre-certified and final certification is in progress.
in conclusion
With the creation of the “Neuer Kanzlerplatz” office complex, Bonn now has a future-oriented office building in an attractive location. At the same time, the project addresses the area’s urban planning issues by revitalizing and opening up previously closed urban areas. The unique geometry of the façade grid produces a vivid appearance that changes with natural lighting conditions and the viewer’s perspective.
Photo © HG Esch
Neuer Kanzlerplatz Office Area, Bonn, Germany – Building Information
Design: JSWD – https://www.jswd-architekten.de/
Project: offices, restaurants, event venues
Address: Bundeskanzlerplatz 2-10, 53113 Bonn, Germany
Client: Art Investment Real Estate, Cologne
Architecture: JSWD, 1st Prize Competition 2015
Completion date: 2023 (demolition/blasting of Bonn Center in March 2017)
Structural design: B+G Ingenieure Bollinger and Grohmann GmbH
Building Services Engineering: KBP Ingenieure GmbH, Munich
Transport Planning: BSV, Aachen + Schüßler-Plan Ingenieurgesellschaft mbH, Düsseldorf
Landscape design: RMPSL, Bonn
Site: 15,300 square meters
High-rise: 28 floors, height = 101.5 meters
Rental area: 66,000 square meters
Office workstations: 4,500
Number of dining seats: 600
Underground parking spaces: 950
Bicycle parking spaces: 450
Photo © HG Esch
Photo: HG Esch, Christa Lachenmaier and JSWD
Sculpture “Mirror Pavilion”: Jeppe Hein, Copenhagen
About JSWD
JSWD Construction was founded in Cologne, Germany in 2000 and operates worldwide. Today, JSWD is managed by founding partners Olaf Drehsen and Frederik Jaspert and partners Christian Mammel, Mario Pirwitz and Tobias Unterberg. Founders Konstantin Jaspert and Jürgen Steffens also continue to support the team. The team consists of approximately 280 employees from 33 nationalities, including architects, interior designers, support staff and administrative staff.
Photo © HG Esch
Since the establishment of the office, JSWD has constructed more than 60 buildings in Germany and other European countries. Many projects are awarded by winning competitions. The company’s main activities are teaching and research, administrative, housing, health and cultural buildings. They also have many years of experience in the construction and renovation of existing buildings.
The pursuit of conceptual and formal clarity acts like a common thread running through all the firm’s architectural projects. Create a clear hierarchy of buildings and open spaces using a small number of but clearly defined elements. The identity of each design is developed based on the specifics of the situation and the requirement to reflect the user’s self-image in terms of corporate architecture.
Photo © HG Esch
Photography: HG Esch, Christa Lachenmaier and JSWD
Pictures/messages of the new principal square office area have been received 080224
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