Luegisland apartment building, Schwamendingen

The project

The architectural firm Oxid Architektur GmbH won a private competition with a well-thought-out and systematically structured timber construction project. The five-story residential building offers 34 apartments of varying layouts, ranging from 2.5 to 4.5 rooms. The staggered arrangement of the building sections ensures privacy for residents as well as optimal lighting conditions. Part of the forward-looking mobility concept involves foregoing an underground parking garage in favor of a green bicycle pavilion, which will be constructed using CLT. The landscape design is inspired by the garden city model and incorporates existing large trees.

The construction method

The building will be constructed using modern timber frame construction methods, with columns and slabs. TS3 technology enables beam-free construction, allowing the architectural concept with floor-to-ceiling windows to be realized. The TS3 support structure will be constructed in just four weeks, using just-in-time methods and to a high standard of quality, significantly reducing traffic and noise emissions and enabling the tight schedule to be met.

The challenges

A key structural aspect was the optimization of the construction time, as the site for the replacement building is located in a quiet and densely built-up residential area. While the staircase is normally erected before the timber construction, causing a delay of several weeks, a new approach was chosen here: timber construction and concrete work were carried out in parallel, floor by floor. This close cooperation between the timber builder and the master builder enabled the materials to be integrated cleanly, reduced complexity at the interfaces, and saved a total of around three months of construction time—a decisive advantage for the project's cost-effectiveness and adherence to schedule.

Construction data

• Number of floors: 4 plus attic floor
• Floor area: 2,900 m²

Architecture

Oxid Architecture

Client

Private

Timber construction

Renggli AG, Sursee