Building owner award 2023: Bernardo Bader in Hohenems

Building design
Bernardo Bader Architekten were awarded the Bauherrenpreis 2023 for the revitalization of the old town of Hohenems. Photo: © Schadenbauer

Bernardo Bader Architekten were awarded the Bauherrenpreis 2023 for the revitalization of the old town of Hohenems. Photo: © Schadenbauer

The Austrian Bauherr:innenpreis 2023 was awarded in mid-October to the ensemble designed by Bernardo Bader in the center of Hohenems. The Vorarlberg architecture firm developed the first phase of the revitalization by means of renovation and new construction together with the client Markus Schadenbauer.

The Austrian Bauherr:innenpreis 2023 was awarded in mid-October to the ensemble designed by Bernardo Bader in the center of Hohenems. The Vorarlberg architecture firm developed the first phase of the revitalization by means of renovation and new construction together with the client Markus Schadenbauer.

Every year, the Bauherrenpreis honors clients of high-quality architecture that take social and innovative aspects into account. The Central Association of Architects thus recognizes the important and potentially fruitful collaboration between clients and architects, which can result in exceptional projects.

The jury consisting of Angelika Fitz(Director of the Architekturzentrum Wien), Regula Harder and Florian Nagler (architect) selected three winning projects from the 25 submissions pre-selected by the nomination juries of the federal states. Among them is the revitalization of the old town of Hohenems on behalf of Schadenbauer Projekt- und Quartierentwicklungs GmbH. From the client’s point of view, the historical building mass was relevant, on which a new concept for the revitalization of the site was based. The design included not only the construction of two new houses, but also the renovation of five old buildings. The Marktstraße/Harrachgasse project began back in 2010 and persistently pursued the goal of a vital and bustling town center in the Vorarlberg city. It represents the first phase of project development until 2022.

The initial situation in Hohenems is typical of small Austrian towns. The renovation of the historic buildings is only possible at great financial and technical expense, the stores are empty and living space in the old walls is also unattractive. The traffic has not led to more footfall, as is often claimed, but on the contrary has resulted in a deserted row of stores in Harrachgasse and Marktstraße.

A bypass and the intervention of the Federal Monuments Office were the first steps towards upgrading the town center. The client and architects made use of the abundant existing buildings and developed an overall concept that included both traffic planning and the renovation of the buildings. The main focus is now on pedestrian and bicycle traffic. A connection between the two streets and the development of formerly private courtyards and gardens also lead to a spatially qualitative public space.

With gentle redensification, Bernardo Bader Architekten created an addition to the historic ensemble, which is now attracting people back into the center of Hohenems with a variety of uses. Stores and opportunities to work are bringing life to the formerly busy streets. A start-up center with restaurants and service providers, as well as small stores, ensure a steady flow of visitors. The client Markus Schadenbauer and Bernardo Bader Architekten were not the only ones to coordinate carefully.

The Federal Monuments Office was also involved in the planning. Attention was paid to a harmonious color scheme for the buildings and substantial details such as natural stone floors and historic vaults were sensitively restored. In the newly created meeting zone on Marktgasse, locals and “Zuagroaste” (i.e. new Hohenems residents and visitors) can now enjoy the newly revived architecture, with old and new in literally perfect harmony.

Rural balancing act: Bernardo Bader in Andelsbuch reinterprets the Vorarlberg farmhouse with a modern reduction of stylistic elements and forms.

POTREBBE INTERESSARTI ANCHE

Sebastian Stettner – Work assignment successful

Building design

From 1995 to 1999, the author restored five paintings from the main altar of the Franciscan church in Subotica (Hungary). The archive material available there already provided indications of the authorship of Sebastian Stettner (1699-1758). The documents in Subotica describe, among other things, the execution of the commission. According to them, Sebastian Stettner painted St. Michael “with extraordinary skill and expertise” in such a way that he […]

From 1995 to 1999, the author restored five paintings from the main altar of the Franciscan church in Subotica (Hungary). The archive material available there already provided indications of the authorship of Sebastian Stettner (1699-1758).

The documents in Subotica describe, among other things, the execution of the commission. According to them, Sebastian Stettner painted St. Michael “with extraordinary skill and expertise” in such a way that he steps on the devil. However, the client criticized the number of devils: “Why so many devils?” (Archivium 1751: 30). The artist therefore had to make changes to his painting and probably painted a completely new picture, as X-ray examinations showed no traces of overpainting. As things stand at present, he probably only submitted an oil sketch to the director of the House of the Order and chose the current iconographic concept before executing it. Unfortunately, these or other sketches by Stettner have not survived. They would have provided a better indication of his drawing skills and would have brought us closer to the art workshop where he studied.

However, by examining the materials and production techniques and evaluating the sources, a total of 14 works could be attributed to this master. The painter and gilder, whose origins are documented as “Dorst, Baijern” but could not be verified, settled in Buda (Hungary) in 1727, where he was granted citizenship in 1736. The city fathers made their decision dependent on the consent of two painters in Buda: Georg Falkoner (1646-1741) and Kaspar Landtrachtinger (1670-1744). Around 1738, his marriage to Maria Theresia Seth (1716-1789) enabled him to acquire a house in which he ran his workshop. His wife was also a painter and continued to run the workshop after Stettner’s death.
You can find out more about Sebastian Stettner’s painting technique in RESTAURO 4 / 2014.

Adding a storey to a house using a 3D printer

Building design
PERI realizes the world's first residential building extension with 3D concrete printing technology in Lindau.

The PERI company is realizing the world's first residential building extension with 3D concrete printing technology in Lindau/Lake Constance. Photo: PERI

After the first residential building with 3D printing technology, PERI has now realized the world’s first residential building extension – also with a 3D printer – in Lindau. You can read all about the project here.

Following the first residential building with 3D printing technology, the company Peri has now realized the world’s first residential building extension – also with a 3D printer – in Lindau. You can read all about the project and its significance for contemporary urban development in terms of redensification here.

A few weeks after Germany’s first 3D-printed house was opened in Beckum, the Weißenhorn-based formwork giant Peri is once again making a name for itself with a project on Lake Constance. This time with the addition of a storey to a residential building in Lindau, Bavaria.

The planning architect André Baldauf is extending the residential building by one storey. What is unique about this residential extension is that the load-bearing wall structures of the new storey are applied to the existing load-bearing structure using a 3D concrete printer. For this purpose, the old roof is first removed and a concrete ceiling is placed on top. In contrast, the ceiling is still being produced conventionally, as current 3D printing processes are not yet suitable for ceilings.

This creates an additional storey on the house with a floor area of 120 square meters and a height of 3.70 meters. The insulation made of Neptune gas insulates the double-shell walls. A new timber folding roof completes the extension at the top. With this project, Peri wants to show how flexibly 3D printing technology can be used in building construction. A particular challenge in the extension project in Lindau was the slope of the property, which initially posed difficulties for those involved in setting up the 3D printer. Like the house in Beckum, the extension in Lindau is a prototype project for Peri, with which the company wants to demonstrate the possibilities of its technology.

Similar to a 3D printer for plastics, the 3D concrete printing process from Danish company Cobod used here involves applying layers of specially designed concrete on top of each other until the desired wall height is reached. This is because the printer is set up as a gantry printer. This means that the machine stands on a structure that spans the work surface. This allows the print head to move in the resulting space. The print head uses a nozzle to apply layers of concrete two centimetres high and five centimetres wide as standard.

Layer by layer, load-bearing walls are created that can follow almost any curves and curves. The layer structure creates the corrugated look of the walls that is typical of this 3D printing variant. According to the manufacturer, the printer used (BOD2) takes around five minutes to print one square meter of double-skin wall.

The concrete used is a special formulation. The manufacturer HeidelbergCement has developed this specifically for 3D printing and calls it “i.tech 3D”. It is designed for good pumpability and high green strength and allows fresh-in-fresh printing. The special concrete is said to be fully recyclable and its development focused on the lowest possibleCO2 footprint. According to the manufacturer, up to 50 percent ofCO2 emissions can be saved compared to conventional concrete construction.

The advantages and disadvantages of adding storeys to buildings using 3D printing are similar to those of 3D building printing in general. In terms of time, costs and manpower, the technology already has an advantage over molded concrete in certain areas of application. In addition, complex shapes can be realized without high additional costs. However, there is currently no way to print reinforced walls with increased load-bearing capacity. This is because the choice of materials for 3D printing of buildings is still very limited.

3D concrete printing could provide a significant boost to urban densification. Where possible, a 3D-printed extension can also be harmoniously added to complex building structures. Compared to traditional construction methods, the disruption caused to the surrounding residents by the construction work would ultimately be reduced, at least in terms of time. This could therefore pave the way for greater acceptance. In the near future, the method could also offer considerable cost savings in some cases compared to traditional formwork concrete construction.

The 3D printing of buildings is still in its infancy and is currently undergoing a rapid phase of development. We can look forward to many more innovations in this area before certain processes become established and suitable for the mass market.

You can find more information on Peri’s 3D concrete printing process on the manufacturer’s website.

Also interesting: In Hamburg, the urban real estate developer Sprinkenhof is planning an administrative building in timber construction together with ADEPT. This is set to become Germany’s largest timber building.