Golden Lion for space laboratory

Building design

The Berlin architects’ association Raumlabor has been awarded the Golden Lion for its contribution to the Biennale Architettura 2021. Raumlabor’s presentation in the halls of the Arsenale looks raw. The Berlin architects have assembled a ceiling-high room divider from a scaffolding system. Image and text panels are attached to it with powerful screws […]

The Berlin architects’ association Raumlabor has been awarded the Golden Lion for its contribution to the Biennale Architettura 2021.

Raumlabor ‘s presentation in the halls of the Arsenale has a raw look. The Berlin architects have assembled a ceiling-high room divider from a scaffolding system. Image and text panels are attached to it with powerful screws. Armchairs and sofas, whose seats and backrests are made from old plastic stairs, form a small lounge area behind it.

Repurposing and recycling are themes that have long preoccupied Raumlabor – and not just when it comes to furniture. This becomes clear in the works they are presenting. Raumlabor is presenting two projects at the Biennale under the heading “Instances of Urban Practice”. The “Floating University” and their conversion of the Haus der Statistik on Alexanderplatz. They convinced the jury chaired by Kazuyo Sejima. It awarded the Berlin office collective the Golden Lion for the best contribution in 2021.

The Floating University was created in 2018 in a biotope at Berlin’s former Tempelhof Airport. With the help of a series of informal buildings located in an old rainwater retention basin from the 1930s, Raumlabor created a multidisciplinary place of learning. The facility, which is now run by an association, aims to make the biotope permanently accessible to the public. At the same time, it has developed educational programs designed to enable self-empowerment in the present.

The Haus der Statistik model project is pursuing the participatory conversion of the GDR administration complex on Alexanderplatz. A whole range of cultural and social uses are to be established here. The schematic drawing showing Raumlabor on its scaffolding construction in the Arsenale contains terms such as “experimental house”, “appropriation” and “neighborhood niche”. Even those who don’t know what’s behind them understand the thrust of the project. In addition, a new town hall for the Mitte district, a day care center, studios and facilities for affordable and integrated living are to be built on the site of the Haus der Statistik.

If you compare the Raumlabor projects with the contribution for which Eduardo Souto de Moura received the Golden Lion in 2018, the difference could hardly be greater. The Portuguese artist placed the important Cistercian abbey of Santa Maria do Bouro at the center of his installation. He had renovated the building 20 years earlier and converted it into a hotel. His contribution, like his renovation, was an architectural-historical and aesthetic reflection on how to deal with the past. The same also applies to the contribution of the 2018 Silver Lion winners, the Belgian firm De Vylder Vinck Taillieu. They used Filip Dujardin’s wonderful architectural photographs to show their conversion of a ruinous historicist clinic building.

Raumlabor, on the other hand, use a formal and visual language that demonstrates extreme pragmatism and compelling necessity – an aesthetic of self-empowerment and resistance to the capitalist value model. Anyone wandering through the 2021 Architecture Biennale will quickly notice that this aesthetic position appears far more frequently in the halls and pavilions than Souto de Mouras. In it, the feeling of a present that is now perceived as crisis-ridden in many respects finds its formal expression. The awarding of the Golden Lion to Raumlabor’s contribution is entirely logical in this context. Does the jury really see it as an exemplary answer to the title question of this Biennale “How will we live together”?

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.