Switzerland to build huge wood skyscraper

Switzerland to build huge wood skyscraper

Tokyo (SCCIJ) – The tallest wooden residential building in the world will be built in Winterthur. An international architectural competition for the Rocket & Tigerli building complex at Lokstadt has been completed. The first occupancies are planned for 2026.

Switzerland to build huge wood skyscraper

The innovative wooden construction of the skyscraper in Winterthur is covered with façades of terracotta (Picture: Ina Invest).

At 100 meters, the Rocket high-rise is currently the world’s tallest residential building made of wood that is in the planning stage. The design by Schmidt Hammer Lassen Architects from Copenhagen and Cometti Truffer Hodel Architects from Lucerne prevailed as the winning project against the proposals of eight other teams. Renowned Swiss architects and experts participated in the jury.

Natural materials

The concept convinced with versatile qualities and forms an outstanding architectural conclusion of the development of an urban site called “4b”. The planning approach is based on the placement of several free-standing buildings along the outer flanks of the site. The Rocket high-rise building is located at the most prominent public square.

The construction company Implenia, the Swiss Federal Institute of Technology in Zurich (ETHZ), and the engineering company WaltGalmarini developed the special wooden structure of the building with a high sustainability. Besides using wood, it is covered with façades of terracotta. The generous inner courtyard will contain lush islands of green.

Switzerland to build huge wood skyscraper

The Rocket tower will contain a wide range of apartments (Picture: Ina Invest).

Mixed usage

The 32 floors of the Rocket tower will contain a wide range of 255 apartments; the Tigerli base building is intended for student and social housing and will include a part of the Radisson RED hotel. A footbridge will provide a link to the other hotel part.

The assignment was not anonymous and took the form of a single-stage digital process with pre-qualification and an interim meeting. Participants faced a highly demanding task, ranging from town planning to architectural issues, with great value also attached to sustainability and innovation.

Experiences in Zug

The pioneers Implenia and WaltGalmarini have just begun building a wooden skyscraper in Zug. The 80-meter, 27-floor tower of the “Project Pi” will be the first wooden high-rise building in Switzerland with the completion planned for 2024. The structural system is directionally neutral and allows very large spans and thus great flexibility in floor plan design.

It is based on an inner and an outer frame structure made of beech wood and a joistless composite timber flat slab. Due to the frame structure, large, massive bracing cores in cast-in-place concrete can be dispensed with. The wooden skeleton thus remains visible. The same structure will be applied to the Rocket Tower in Winterthur.

Text: SCCIJ with material of Implenia



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