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The building structure is the backbone of every construction project. It is responsible for the stability and serviceability of a building and greatly influences the extent of its use. Structural engineering is the original and core competency of Bollinger + Grohmann Ingenieure. With an understanding of each design we create individual structural solutions based on our continuously developing strength and expertise in structural engineering. Bollinger + Grohmann Ingenieure always seek the optimum structural solution.

We avoid dogma, question the status quo and engage ourselves directly with the unique challenges of each individual project. The successful execution of an aesthetic, functional and cost-efficient solution is our goal. We seek to join the design planning process as early as possible and accompany our projects from the initial concept designs through to final completion.

Construction methods and material

We utilise a broad spectrum of possible construction material and building types. Whenever necessary we use our commercial independence as consulting engineers to develop new solutions together with our partners in industries and universities.

Our expertise ranges from ultra-lightweight construction with carbon fibres and textile membranes through to timber, steel, reinforced concrete, structural glass and prestressed structures.

Complex Simplicity

One of our prominent areas of specialty are complex geometrical and delicate structures, where we are one of the pioneers in the development of modern planning tools as well as design implementation.

As engineers these tools are not an end in themselves but, they rather help us to solve unsolvable problems for the owners and design team and to ultimately make them feasible. This is true for instance with the execution of imperfect free forms, the use of robotic techniques or with geometrical optimisation.


All buildings require a solid foundation. In addition to traditional footings and mat slab foundations we provide solutions for specialised deep foundations, combined pile-slab foundations and waterproof concrete basement foundation including all required on-site engineering supervision.

Further foundation and excavation measures including watertight cofferdams, sequent piling and underpinning solutions (e.g. high pressure injection) round off our geotechnical portfolio.

Structural Dynamics

Bollinger + Grohmann Ingenieure have expertise in the area of dynamic analysis which is required for complex problems which cannot be solved with standard structural modelling tools. Such problems include vibration analyses and the calculation of moving systems. We develop solutions for every challenge from the analysis of moving structures to the development of safe building structures in seismic zones.

Our experience ranges from fatigue analysis of bridges to base-isolation of high-rise buildings in high seismic zones.

Timber engineering

Our services  in the domain of Timber Structures comprise the structural design of all building types during all planning stages according to HOAI. We work on projects ranging from single-family house construction up to wide-spanning timber structures. This also includes the planning of temporary structures and modular construction.

Our services include: the development of optimized structures for all building types and special construction, elaboration of the structural analysis, development of special details and innovative solutions, support for the detailed execution design, 3D planning, parametric development of structures and BIM-planning.

During the planning process of timber structures, the integral development of the project is our priority. In addition to the services of structural engineering, we are therefore also responsible for the building physics and fire protection (elaboration of fire protection concepts). This combination of design services facilitates the planning process and leads to efficient, cost-effective and high-quality solutions that we develop in close cooperation with architects, clients and local authorities.

06 - 07 September 2019

Bollinger + Grohmann future workshop in Antwerp

On 06 and 07 September, the team of the entire Bollinger + Grohmann Group came together to a workshop in Antwerp to discuss about roots, philosophy and future of our company.

27 September 2019

Structural Engineering symposium: Vision und Konstruktion

"Steglitzer Kreisel - Revitalisierung"
Lecture by Holger Alpermann (B+G Berlin) in the course of the event "Vision und Konstruktion".
Venue: Universität der Künste, Berlin, Germany
Time: 14.40 - 15.00

19 September 2019

How to become an apprentice in 10 minutes - 10 minutes to find an apprenticeship

This year, Bollinger + Grohmann takes part for the first time in the Apprentice-Speed-Dating at the IHK in Frankfurt. The event offers people who are searching for an apprenticeship and companies the opportunity to find suitable apprentice positions or suitable applicants in 10 minutes.

Venue: Industrie- und Handelskammer, Börsenplatz 4, Frankfurt
Time: 10 am - 3 pm

18 September 2019

"Killing Stereotypes in Façade Engineering"

The lecture by Daniel Pfanner (B+G) on this year's "ZAK World of Façades" conference deals with the following topics:
- Today challenges for building envelopes
- Functionality and aesthetic sustainability
- Practical approaches

Venue: Titanic Chaussee, Berlin, Germany
Time: 4 - 4.20 pm

7 - 10 October 2019

Plenary Lecture by Manfred Grohmann: Architecture und Structure

This year the joint international conference "IASS Symposium 2019" and the "Structural Membranes 2019" under the title "Form and Force" will take place from 7 to 10 October in Barcelona.

21 - 25 September 2019

Design modelling Symposium Berlin 2019

By synthesizing artistic, theoretical and technological perspectives and positions, the Design Modelling Symposium will provide a platform for key research questions about the role of the digital age in relation to art, architecture and design, and the impact on the future of society, environment and innovation.

14 September - 06 October 2019

Stadtlabor Friederike

The experimental structure FRIEDERIKE is presented as of the City of Vienna's cultural initiative to showcase art in an public space. Performances, concerts, film showings will be held under the temporary structure which runs from 14.09.2019 until 6.10.2019 in the 14th district of Vienna. Bollinger + Grohmann gave expert advice on the structural design.

12 September 2019

Omniturm. Work Life United

At the 14th Jung architecture talks, Manfred Grohmann (B+G), Kai-Uwe Bermann (BIG) and Florian Reiff (Tischman Speyer) used the example of the Omniturm project to discuss what the combination of working and living means for architecture and interdisciplinary planning.

The event was held in the crowded Frankfurt Jugend- und Kulturkirche Sankt Peter in Frankfurt.

© JUNG.DE / Fotograf: Markus Eichelmann

11 September 2019

Tragwerksentwurf und -modellierung am Beispiel des Hochhauskomplexes FOUR, Frankfurt

Lecture by Simon Ruppert in the course of the seminar "Weiterbildung für Tragwerksplaner 2019: FE-Berechnung und Modellierung" at the TU Darmstadt.

Venue: TUD, Institut für Massivbau, Gebäude L3/01 Raum 93
Time: 4.45 - 5.15 pm

18 September 2019

SO FOUR SO GOOD Zum Tragwerksentwurf des ersten Hochhausclusters Deutschlands

The second lecture by Simon Ruppert within the seminar "Weiterbildung für Tragwerksplaner 2019: FE-Berechnung und Modellierung", this time at the TU Kaiserslautern.

Venue: TU Kaiserslautern, Gebäude 46, Raum 210
Time: 4.45 - 5.15 pm

08 September 2019

Opening: Bauhaus Museum Dessau

The opening of the Museum in Dessau is one of the highlights of the annyversary year of Bauhaus. For the first time the Bauhaus Dessau Foundation’s unique collection will be comprehensively displayed.
Bollinger + Grohmann was in charge of the structural and façade engineering, the fire protection planning as well as for the building physics.

September 2019

Connect 3/19: Norwegen verfolgt seine Ziele konsequent

In an interview with the business magazine of the AHK Norway, Michael Lommertz, Head of Sustainability B + G Oslo, gave an report on the sustainable construction in Norway. (page 32-37)

13 September 2019, 12 am - 2 pm

Just a simple engineering love affair. Workflow / Digital Fabrication

On September, 13th, Klaas de Rycke (B+G Paris) will give a lecture at SCAU architecture in Paris.

Information and registration:

29 August 2019

Lunch lecture at Gewers Pudewill

Daniel Pfanner (B+G) visited the colleagues of Gewers Pudewill end of August for a lunch lecture about the challenging façade engineering of the project Louvre in Lens, France.

Picture: Philipp Winter

6 August 2019

Opening of the new school and gymnasium in Berlin Mahlsdorf

The new school for 550 pupils was completed on time at the beginning of the new school year, along with the gymnasium. The school is the first of three model projects that the Berlin Senate has commissioned to be built as a modular timber construction. The design for all three schools is by the architects NKBAK from Frankfurt, who worked in a joint-venture together with Bollinger + Grohmann, Ecotec (MEP) and Franz Reschke Landschaftsarchitektur.

Photo: Thomas Mayer

29 July 2019

1st prize: Xingtai Science and Technology Museum

Coop Himmelb(l)au wins Science & Technology Museum Competition in Xingtai, China. Bollinger + Grohmann Ingenieure was in charge of structural engineering.

23 July – 30 November 2019

Research project RegoLight at “ZERO GRAVITY” exhibition

The exhibition “ZERO GRAVITY” revolves around concepts and ideas that defined and changed arts and science from the moment humankind stepped on the moon. Selected material from research project RegoLight, which Bollinger + Grohmann was part of between 2015 and 2017, will be a part of media artist Peter Kogler spatial installation at ERES-Stiftung in Munich.

Room installation by Peter Kogler, Ohne Titel, 2019, © the artist, Photo: Thomas Dashuber

4 July 2019

1st prize for "Kurfürstenstraße, Berlin"

Congratulations to the team of Barkow Leibinger who won the competition about the "Wohn- und Bürokomplex Kurfürstenstrasse" in Berlin. B+G gave technical advice.

© Image: Barkow Leibinger

4 July 2019

2nd prize for "Heinrich-Hoffmann-Grundschule, Darmstadt"

We are very happy about the 2nd prize, which Dietrich Untertrifaller Architekten received for the design of the "Heinrich-Hoffmann-Grundschule" in Darmstadt. B+G gave technical advice.

@ Image: Dietrich Untertrifaller Architekten

29 - 30 June 2019

Tag der Architektur 2019

"Räume prägen" - this is the motto of this year's nationwide Architecture Day. Of a total of 76 selected examples in Hesse, three structures are also open to the public, and B+G was involved in their realisation with structural and/or façade engineering:

Kornmarkt-Arkaden, Frankfurt
Residential and office building Berger-/ corner Höhenstraße, Frankfurt
Headquarters Europe Musterhausküchen, Dreieich

09 June 2019

Installation of the timber construction modules

After the Marie Curie School, the August Gräser School in Frankfurt is currently being extended by a modular timber construction. The installation and assembly of the 12 modules only takes two days. The new premises should be ready for occupancy by August. B+G was responsible for the structural design as well as for the building physics.

19 June 2019

1st prize with Nieto Sobejano Architectos

We are happy about one of two 1st prizes within the competition of the new event hall and hotel with underground parking in the Kaiserpfalzquartier in Goslar. B+G gave technical advice. Auer Weber won a further 1st prize.

© Visualization: Nieto Sobejano Architectos

12 June 2019

Sykehusområde på Bragernes, Drammen

Together with Powerhouse Company and Skajaa arkitektkontor, B+G Oslo worked besides three other teams in the bidding process (Parallelloppdrag) for the conversion of the former hospital site in Drammen.

06 June 2019

Project Winner

We are very happy to announce that our project “Gradient” is the winner of the international engineering, architectural, landscaping and integrated art competition held by the City of Nyon related to the development of Greater Geneva.

May 2019

MOCAPE - "Steel Construction" Volume 12, 2019

The May issue of the magazine „Steel Construction“ features an article about the MOCAPE Museum in Shenzhen written by B+G.
The project even made it onto the cover!

27 May 2019

First prize for "Bildungscampus " in Pforzheim

Bruno Fioretti Marquez (BFM) won the competition for the "Bildungscampus" Pforzheim.
B+G supported the architects with the development of a 4- and 3-floor timber construction for two school buildings, a canteen and sports hall and the concept for the further development of three existing buildings.

22 May 2019

C40 Reinventing Cities: Winning project 'The Urban Village'

Teaming up within "The Urban Village Team" with LPO Architects / SLA, Bollinger + Grohmann won within the C40 Reinventing Cities competition. The site is located in the northeast of Oslo and aims to drive carbon neutral and resilient urban regeneration focusing on social, environmental and economic sustainability. Bollinger + Grohmann is involved as an environmental expert and for the structural design.

Image: ©The Urban Village Team

3 May - 1 June 2019

Opening of the PLAY! exhibition in Paris

The exhibition is entirely dedicated to the project Quai de la Moselle sports center in Calais, France designed by Bureau faceB. Bollinger + Grohmann is responsible for the structural engineering.

Venue: Gallery ArchiLib, 49 boulevard de la Vilette, 75010 Paris.

14 May 2019

"Miljøvennlig materialbruk"

Within the course of the Norwegian Architects Association (NAL) course for architects and other planners, Michael Lommertz (B+G Oslo) will give two lectures, one on the sustainable choice of materials and the other on recycling in the building industry.

7 May 2019

Winner MKNO: C40 - Reinventing Cities

Together with Coldefy & Associates, Triptyque Architecture, SO-IL and as part of the team MKNO, Bollinger + Grohmann have been selected winners of the International Competition MBK in Bobigny - within the C40 Reinventing Cities to drive carbon neutral and resilient urban regeneration.

Bollinger + Grohmann is responsible for structural and façade engineering.

Image credit: © ArtefactoryLab / NODI

4 May - 13 July 2019

Biennale d’architecture et de paysage, Versailles

The first Biennale of Architecture and landscaping hosts six exhibitions with the participation of French and international architects and landscapers in exceptional venues and focuses on the main theme “L’homme, la nature et la ville (Man, nature and the city)” and is open to the public.
Bollinger + Grohmann has worked on the structural design and has provided technical advice for several installations.

Wir suchen Dich: Ausbildung zum Bauzeichner Ingenieurbau*

Ab dem 01.08.2019 bieten wir wieder eine Ausbildung Bauzeichner Ingenieurbau* an.

Bewerben Sie sich jetzt!
*Talent ist wichtig, Geschlecht ist egal.

09 April 2019

Topping out ceremony of the K1 in Jena

The future residential and commercial building with around 5,870 m² of residential and commercial space will be Jena's first high-rise since German reunification.
Bollinger + Grohmann was in charge of the structural engineering.

March / April 2019

New publications by B + G

In March/April, B+G is represented with a total of three articles in the "Stahlbau" and "Beton- und Stahlbetonbau" (Verlag Ernst und Sohn):

1. "Hyundai Motorstudio Goyang",
Stahlbau 88 (2019), Heft 3, S. 223-233
2. "Moderne Parametrik in der Tragwerksplanung",
Stahlbau 88 (2019), Heft 3, S. 184-193
3. "Eso Supernova", Besucherzentrum und Planetarium,
Beton- und Stahlbetonbau 114 (2019), S. 1-8

30 March 2019

Topping out ceremony at the Barmbeker Bahnhof

The topping out ceremony of the new hotel and office building "Fuhle 101" in Hamburg Barmbek was celebrated at the end of March.
Architects: Bieling Architekten
Client: Development Partner AG und BL Gruppe
Structural Engineering: B+G

26 March 2019

Bollinger + Grohmann jetzt auch auf Instagram

With our new profile on Instagram, we extended our social media presence. We would like to use our account to give an overview and inform about our scope of work and projects during the different design and development phases. If you want to follow us, please use the link below:

6 March 2019

Deutscher Ingenieurbaupreis 2018

Stadtwerke Düsseldorf and B+G donate the prize money.

1 March 2019

Competition "Hafenpark Quartier Frankfurt": 1st prize

First prize for the hotel design at "Molenspitze" in Frankfurt for Barkow Leibinger. Bollinger + Grohmann gave expert advice in structural engineering.
From 01/03/ to 14/03/2019, the nine submitted designs will be exhibited in the atrium of the Stadtplanungsamt at Kurt-Schumacher-Straße 10 in Frankfurt.

28 February 2019

The Frankfurt Pavilion wins the IDA Award

in the architectural category "Exhibits, Pavilions and Exhibitions". The new landmark of the Frankfurt Book Fair was designed as a temporary building and was opened in September 2018 for the first time.
Bollinger + Grohmann gave expert advice to the schneider+schumacher architects during the whole process and was in charge of the structural engineering.

28 February 2019

ISS Berlin-Mahlsdorf: topping-out ceremony

Yesterday the topping-out ceremony was celebrated at the Integrated Secondary School Berlin-Mahlsdorf. Both the modular school building and the sports hall will be built in timber.

27 February 2019

And another topping-out ceremony: Extension Hager building D

The electrical engineering group Hager expands its headquarters in Blieskastel by an office building for another 100 workplaces.
The planning company schneider + schumacher is responsible for the architecture and site supervision. Bollinger + Grohmann had already completed two buildings at this site together with them.

26 February 2019, 7pm

Haute Agora : The opening of the exhibition

The « Haute Agora » tower, a research project developed by the architect Jean Christophe Quinton and Bollinger + Grohmann Paris, will be exposed at the Pavillon de l’Arsenal in Paris from 27 February to 31 March 2019.

19 - 21 February 2019

63th BetonTage in Neu-Ulm: lecture by Holger Alpermann (B+G Berlin)

Holger Alpermann is invited to talk about the Merck Campus Innovation centre in Darmstadt, Germany.

Venue: Kongresszentrum Neu-Ulm, Podium 7
Time: 20/02/2019, 2 pm

February 2019

JKU Campus - TNF Tower

The 18 metres tall steel grid construction of the new terrace at Johannes Kepler University in Linz is located on the TNF tower which is the tallest building on campus. The construction is planned to be completed in March 2019 which makes it the first of many new places for university visitors to discover!

11 February 2019

Tower of Power: Transport Design of the Year 2018

The public charging station by Göbl Architektur in Vienna is awarded Dezeen’s Transport Design of the Year 2018. A photovoltaic panel roof and a built-in wind turbine supply the station with necessary electricity to charge four electric cars and four electric bikes at a time.
Bollinger + Grohmann was responsible for the structural engineering.

9 February 2019

Franz Masereel Center: Opening

The extension of the Franz Masereel Center, in Kasterlee, Belgium was opened on Thursday, 9 February 2019. The project has been designed by LIST and Hideyuki Nakayama Architects. B+G Paris & Brussels were already part of the competition team and afterwards responsible for the structural engineering.

Ido Avissar of LIST will give a lecture about the construction at the Pavillon de l’Arsenal in Paris, next Thursday, February 21th at 7pm.

November 2018

ECSN-Award: 2nd prize for Merck Campus in Darmstadt

We are very happy about the European Concrete Award 2018 for the Innovation Centre and Company Restaurant on the Merck campus in Darmstadt.

January 2019

Deichmann Library: detailed documentation in the "Teknisk Ukeblad"

The January issue of the Norwegian journal "Teknisk Ukeblad" published a detailed article about the advanced design of the Deichman Library in Oslo. Bollinger+Grohmann supported the project team in terms of structural engineering and façade engineering.