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.

21 March 2018

Excellent examples of the architecture in Hessen 2018

Two 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 chosen

Among 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).

8 march 2018

Merck Campus - Innovation Centre in Darmstadt: Completion

On 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 Dresden

First 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 Oslo

Bollinger + 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 2018

Bollinger 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 Fornebu

for 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.

4 December 2017

"Interloop", Wynyard Station, Sydney

A new 50-meter long sculpture by the Sydney artist and sculptor Chris Fox was officially opened to the public.

28. November 2017

Topping out ceremony for the future Deichman Library in Oslo

The 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.

November 2017

Ingenieurbaukunst 2018

The 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.

November 2017

Beispielhaftes Bauen im Main-Tauber-Kreis 2010 - 2017: Award

for 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.

October 2017

Holzbaupreis Steiermark 2017: MIBA Forum Laakirchen

We 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 Alltagshelden

Accompanying 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 Ingénierie

From 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 Unknown

Peter 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 twice

We are proud to be part of two winning teams of the "Inventons la Métropole du Grand Paris" call for projects.

October 2017

Mit Teamwork zum KACST Headquarter

Article 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.

October 2017

Competition for the Heidelberg Convention Center: 2nd prize

for 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.

September 2017

Opening of the Lab City CentraleSupélec

The 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.

July 2017

FOUR, Frankfurt

Frankfurt'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 orbit

The 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, Austria

A 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 branch

From the 18th of September you will find our office at the following adress:

Alt-Moabit 103 / 2.OG
10559 Berlin

New website online: Ingenieurtalente

The website is supported by the German Consulting Engineers Association VBI state associations and provides information about careers, training and contact persons in the fiel of engineering careers. The goal is to arouse interest among young people for the job of a structural engineer and the workspace in an engineering office.