In March 2016 it was announced that the Dutch architectural firm UNStudio had won a concept competition for the urban redevelopment of Frankfurt’s DB estate with its plan to build four skyscrapers connected by a shared base structure. The winning design involves demolishing all but the historically listed buildings on Junghofstraße to make space for the development on the proposed site. According to the concept, the individual towers will stand at 228 metres (Tower 1), 173 metres (Tower 2), 120 metres (Tower 3) and 100 metres (Tower 4) in height. The largest of the towers – a 59-storey skyscraper located on Großen Gallusstraße – will become the third-tallest structure in Frankfurt and serve as a hotel and office building. The shortest tower – situated on Junghofstraße – will also house offices. The remaining two high-rises will contain 600 apartments.
After consultation with the city’s historic monument authorities, permission was granted for the creation of two openings in the long block of the 1950s buildings on Junghofstraße to allow public access to the site for the very first time. The new six-storey base structure will contain shops, food outlets and a day care centre in a move to revitalise the area and transform it into a vibrant public space.
The construction site will be one of the largest ever seen in Frankfurt and provide employment for up to 3,000 people. The size of the overall investment is estimated at one billion euros. When completed, the new urban quarter will offer workspaces for 3,000 people and accommodation for a further 1,000.
Groß & Partner, Frankfurt, Germany
UNStudio, Amsterdam, Netherlands
Start of planning: 2017
GFA above ground: 210,000 m² | GFA below ground: 100,000 m² | Height (Main tower): 228 m | Level (Main tower): 59 | Flats: approx. 600Service:
Concept Design to Construction Supervision
(in cooperaton with Werner Sobek, Frankfurt am Main)
13 April 2018
Bollinger + Grohmann Ingenieure now also in StuttgartBollinger + Grohmann Ingenieure is since this week also located with a branch in Stuttgart besides the offices in Frankfurt, Berlin, Munich, Vienna, Rome, Paris, Oslo and Melbourne.
The current company EFA Ingenieure GmbH (formerly RFR Stuttgart) joins us with all employees, their know-how and current projects as a new branch
28 April 2018
Opening of ESO SupernovaThe cutting-edge astronomy centre, hosting the largest titled planetarium in Germany, Austria and Switzerland, will open its doors to the public on the 28th of April. The centre is a public educational facility with an interactive exhibition that will engage the visitors to discover and understand the universe around us. Bollinger + Grohmann was in charge of the structural engineering.
17 April 2018, 6 pm
High-rises in Frankfurt and New YorkLecture by Manfred Grohmann in the course of the series "standpunkte, sommersemester 2018" at Technische Hochschule Mittelhessen (THM) in Gießen, Germany.
Technische Hochschule Mittelhessen
Hugo von Ritgen Haus, Südanlage 6, Gießen
29 March 2018
ACSE Annual Excellence in Structural Engineering NSW awards 2018In the ‘Unusual Projects’ category, the decision was unanimous to award ‘Interloop’, a sculptural installation by artist Chris Fox that hangs from Wynyard Station ceiling in Sydney.
21 March 2018
Excellent examples of the architecture in Hessen 2018Two projects at the same time awarded with the "Simon-Louis-du-Ry-Plakette" were built in collaboration of Bollinger + Grohmann Ingenieure:
Atelier Balkenhol, Kassel , Germany (Punkt4 Architekten BDA, Kassel)
Grimmwelt, Kassel, Germany (kadawittfeldarchitektur, Aachen)
16 March 2018
Grand Prix Afex 2018 : the finalists have been chosenAmong the 10 finalists is also the crematorium on the grounds of the Hörnli cemetery in Basel, Switzerland. The project in collaboration with Frédéric Guarrigues (Paris) and Bernhard Maurer (Zurich). Bollinger + Grohmann engineers were responsible for the structural design.
The award winners will be announced during the Architecture Biennale in Venice (26.05 - 25.11.2018).
12 March 2018
1st prize in the competition for the "House of Media" in BrusselsWe are pleased to announce that the team of architects Baukunst (BE) and Bruther (FR) in cooperation with Bollinger + Grohmann have won the competition for the "Media House" in the mediapark in Brussels (2018-2021). For the further commissioning, Bollinger + Grohmann will be responsible for the structure of the building, which must be kept very flexible with regard to the reversibility of the building.
8 march 2018
Merck Campus - Innovation Centre in Darmstadt: CompletionOn Thursday, March 8, just in time for Merck's 350th birthday, the project was completed. The official inauguration will follow in May.
2 February 2018
Competition for the Archive of the Avantgarde in DresdenFirst Prize in the International Architectural Competition for the Archive of the Avantgarde of the Dresden State Art Collections for Nieto Sobejano Architectos (Madrid, Berlin). Bollinger + Grohmann gave expert advice.
23 January 2018
1st prize in the high-rise competition "Nordic Light" in OsloBollinger + Grohmann Engineers have come in a unique position to contribute construction and environmental solutions in the further development of Oslo S, which will become Norway's most important and best-selling collective hub.
22 January 2018
Opening of the Floe project for the NGV Triennial 2018Bollinger Grohmann Engineers are proud to be part of a collaboration between architectural practice Studio Roland Snooks and sound artist Philip Samartzis.
7 December 2017
1st prize in the competition Fornebufor the team of Bollinger + Grohmann, Oslo, Dyrvik Arkitekter, Oslo, Transborder Studio, Oslo and SLA, Oslo for the redesign of a part of the former airport on the peninsula Oslo-Fornebu.
28. November 2017
Topping out ceremony for the future Deichman Library in OsloThe new Deichman Library is situated next to the new Central-Railwaystation in Olso. This project is another important element for the redevelopment of the harbour- area around the new Opera.
Bollinger + Grohmann is in charge of the structural design for both projects.
Ingenieurbaukunst 2018The book, published by the Federal Chamber of Engineers, presents the most spectacular current civil engineering projects worldwide, in which German engineers play a significant role.
Beispielhaftes Bauen im Main-Tauber-Kreis 2010 - 2017: Awardfor the extension of the gastronomy at the Castle Wertheim with punkt 4 architekten, Kassel, Germany.
Bollinger + Grohmann were in charge of the structural design and buildings physics.
Holzbaupreis Steiermark 2017: MIBA Forum LaakirchenWe are happy to receive the ”Holzbaupreis Steiermark 2017“ in the category "wood construction without borders“ for the concept of Delugan Meissl Associated Architects where Bollinger + Grohmann made the structural engineering.
10 November 2017
New publication in DETAIL publishing house: Visionäre und AlltagsheldenAccompanying the exhibition "Visionäre und Alltagshelden" at the OVMF in Munich, a publication with the same name has been published by DETAIL publishing house.
6 November 2017
New address Bollinger + Grohmann IngénierieFrom 6th November Bollinger + Grohmann Ingénierie has a new address: 15 rue Eugène Varlin, 75010 Paris.
All other contact details like phone, fax, email and web remain unchanged.
23 September 2017 - 25 March 3018
Up into the UnknownPeter Cook, Colin Fournier and the Kunsthaus
The exhibition "Up into the Unknown" traces the creation of the Kunsthaus Graz, exploring thereby the relationship between visionary ideas and their realisation.
23 October 2017
"Inventons la Métropole du Grand Paris": B+G among the winning teams twiceWe are proud to be part of two winning teams of the "Inventons la Métropole du Grand Paris" call for projects.
Mit Teamwork zum KACST HeadquarterArticle of Klaus Bollinger, Manfred Grohmann and Simon Ruppert about the Headquarter of the "King Abdullah City for Science and Technology" in the annual edition of the "Bauingenieur" 2017/2018.
Competition for the Heidelberg Convention Center: 2nd prizefor Nieto Sobejano Architectos, Berlin.
Bollinger + Grohmann gave expert advice .
The 1st prize goes to Degelo Architekten, Basel, two 3rd prizes to Bez+Kock Architekten and 4a Architekten from Stuttgart.
Opening of the Lab City CentraleSupélecThe project of the Ecole Centrale-Supélec in Paris was completed just in time for the beginning of the semester 2017-2018.
Bollinger + Grohmann was in charge of the structural and façade design.
FOUR, FrankfurtFrankfurt's new high-rise quarter FOUR is being built on the former DEUTSCHE-BANK-AREAL. The architecture of the buildings was chosen in February 2017 within the course of a competition by the Dutch architecture office UNStudio.
We are pleased to be in charge with the structural engineering together with Werner Sobek Frankfurt in a team (ARGE).
Since March 2017
Tomás Saraceno – in orbitThe installation was reopened in March 2017 after extensive renewal measures and will be open for visitors until March 2018. The accessible 25-metres-high net structure was originally planned in collaboration with Bollinger + Grohmann is installed sind 2013 in the Ständehaus in Düsseldorf, Germany.
15 September 2017
Opening of the installation "Fountain" in St. Pölten, AustriaA permanent light sculpture by the artist Brigitte Kowanz will present the former water tower on the premises of Glanzstoff, St. Pölten, in a particularly atmospheric way.
Bollinger + Grohmann were in charge with the structural design in this project.
15 September 2017
New adress of our Berlin branchFrom the 18th of September you will find our office at the following adress:
Alt-Moabit 103 / 2.OG