Robots build new Hanging Gardens, ETH Zürich Architecture Design Project News, Switzerland Design Images
Robots build new Hanging Gardens in Zurich
26 November 2021
Semiramis – Robots build new Hanging Gardens
Design: Gramazio Kohler Research, ETH Zurich
Tech Cluster Zug green architectural sculpture
Semiramis – Robots build new Hanging Gardens
Zurich, November 2021 – With the help of artificial intelligence and four collaborative robots, researchers at ETH Zurich are designing and fabricating a 22.5-metre-tall green architectural sculpture.
Working with Müller Illien Landscape Architects, Timbatec and other partners from industry and research, researchers from the group led by ETH architecture professors Fabio Gramazio and Matthias Kohler are creating a green architectural sculpture for the Tech Cluster Zug. Soaring to a height of 22.5 metres, the structure will consist of five geometrically complex wooden pods that are slightly offset from each other and supported by eight thin steel pillars. The sculpture, named after the Babylonian queen to whom the ancient Hanging Gardens of Babylon have been attributed, is being designed and built using innovative digital methods that were developed as part of the project.
AI proposes a clever design
In the conventional design process for projects like this, architects try to take the different requirements of a building or structure into account in its design, and then adjust that design until all the requirements are met in the best way possible. Not so with Semiramis: a custom machine learning algorithm, developed in collaboration with the Swiss Data Science Center, presented the researchers with sophisticated design options.
The proposals differed as to the shapes of the pods and their spatial arrangement relative to each other. They also highlighted how each design affected individual target variables, such as irrigation for the pods. “The computer model lets us reverse the conventional design process and explore the full design scope for a project. This leads to new, often surprising geometries,” says Matthias Kohler, Professor of Architecture and Digital Fabrication at ETH Zurich.
In the Immersive Design Lab, an augmented reality laboratory on the Hönggerberg campus, the researchers were able to explore the designs in three dimensions and fine-tune them together in real time. Software developed jointly with ETH’s Computational Robotics Lab makes adapting the designs of the wooden pods easy: for example, if the scientists move a single point within the geometry of one of the pods, which are composed of about 70 wooden panels, the software adjusts the entire geometry. At the same time, the software takes into account the relevant manufacturing parameters, such as a panel’s maximum possible weight, meaning it always generates the most efficient and most load-bearing configuration.
A delicate dance for the highest precision
The best design is currently being manufactured in the Robotic Fabrication Laboratory at ETH Zurich. Always in sync, four suspended robotic arms each pick up the wooden panel assigned to them, perform a high-precision dance and finally put the panels into place according to the computer design.
An algorithm calculates the movements of the robots in such a way that no collisions occur during execution. Once the machines have placed their four panels next to each other, craftspeople first temporarily join them before gluing them together with a special casting resin. Each of Semiramis’s five wooden pods comprises between 51 and 88 of these wooden panels.
In contrast to traditional wood construction, robotic manufacturing has several advantages: for one thing, the robots relieve humans of the heavy lifting and precise positioning; for another, the assembly process requires no costly, resource-intensive substructures.
video : Gramazio Kohler Research, ETH Zürich
A symbol of collaboration
Robotic prefabrication is currently running at full speed. Individual pod segments are being shipped to Zug by lorry on a regular basis, where the architectural sculpture will be erected and finally planted out in spring 2022. Starting that summer, people will be able to view the wooden structure from the ground or from nearby buildings and catch a glimpse of the greenery in the pods.
For Kohler, meanwhile, the project has already proven its value: “Semiramis has been a beacon project for architectural research, bringing together people inside and outside ETH and advancing the key research topics of the present, such as interactive architectural design and digital fabrication,” he says.
Robots build new Hanging Gardens, ETH Zürich – Technical Information
Industry and research partners involved in the project:
Gramazio Kohler Research, ETH Zurich
In collaboration with: Müller Illien Landschaftsarchitekten GmbH, Timbatec Holzbauingenieure Schweiz AG
Client: Urban Assets Zug AG
General contractor: Erne AG Holzbau
Team: Matthias Kohler, Fabio Gramazio, Sarah Schneider, Matteo Pacher, Aleksandra Apolinarska, Pascal Bach, Gonzalo Casas, Philippe Fleischmann, Matthias Helmreich, Michael Lyrenmann, Beverly Lytle, Romana Rust
Industry partners: TS3 AG, Intrinsic
Selected experts: Chair for Timber Structures, ETH Zurich; Computational Robotics Lab, ETH Zurich – Krispin Wandel, Bernhard Thomaszewsky, Roi Poranne, Stelian Coros; Swiss Data Science Center – Luis Salamanca, Fernando Perez-Cruz
Credit Rendering: Gramazio Kohler Research, ETH Zürich
Credit Pictures: Pascal Bach / Gramazio Kohler Research, ETH Zürich
Semiramis – Robots build new Hanging Gardens images / information from ETH Zürich
ETH Zürich Architecture Design
Design: Holzer Kobler Architekturen
photo © Holzer Kobler Architekturen, Photo Susana Bruell
focus Terra ETH Zurich
New Physics Building for ETH Zurich, Hönggerberg Campus, Eidgenössische Technische Hochschule
Design: Stanton Williams with Stähelin Architekten
image courtesy of architects practice
ETHZ Building at Hönggerberg Campus Zurich
Location: Zürich, Switzerland, central Europe
Architecture in Switzerland
Swiss Architecture Designs – architectural selection below:
Swiss Architecture Designs – chronological list
Swiss Buildings – Selection
Shopping Center Schönbühl redesign
Holzer Kobler Architekturen
Shopping Center Schönbühl
westside Shopping and Leisure Center, Bern-Brünnen
Studio Daniel Libeskind
Comments / photos for the Semiramis – Robots build new Hanging Gardens Switzerland Architecture page welcome