Hargassner multi-storey car park, Weng

Hargassner multi-storey car park supporting structure

Facade of Hargassner multi-storey car park

Weng im Innkreis

A multi-storey car park
in timber

The heating manufacturer Hargassner takes sustainability seriously: the new multi-storey car park at the site in Weng i. I. is a bold step towards CO2 reduction in infrastructure buildings.

WIEHAG was commissioned to design, build and assemble the largest timber multi-storey car park to date on site. A milestone project in which the timber construction engineers were able to master a new challenge.

The task

A bold infrastructure building in timber

The heating manufacturer Hargassner from Weng commissioned WIEHAG to build a multi-storey car park for its employees in order to provide sufficient and nearby parking spaces for their cars. In addition, an extension was to be realised in which a crèche for the employees' children would be created.

The implentation

The largest
timber car park in Austria

At the request of the two clients, the multi-storey car park was built in timber construction with a view to innovation and sustainability. Only the access ramps and the stairwells were built in solid construction. The multi-storey car park has two bays with a floor area of 35 m x 77 m. There are five parking levels on each side, one above the other, which are connected to each other via the ramps at half-storey level. The multi-storey car park has space for 500 cars and is directly connected to the adjacent office building and the crèche via bridges.

The bar-shaped components, such as columns, ceiling and roof beams, are made of glulam (GLT). Cross-laminated timber (CLT) was used for the flat components, such as ceiling and roof panels. In total, more than 2,200 m³ of timber was used - making it the largest timber car park in Austria to date.

The overall bracing of the building is provided by the CLT ceiling panels spanning over 50 metres, which transfer the horizontal loads to the solid construction walls at the gables and to the diagonal bracing in the eaves.

Interior view of the Hargassner timber car park

A special ray of light

The larch facade appears very dynamic and varied with its different diagonal arrangement. Depending on the perspective, it appears transparent or closed. The façade is elementised and reversibly attached to the supporting structure.

The cleverly conceived geometry and arrangement of the larch boards keeps most of the precipitation away from the main supporting structure. Innovative irrigation tests were carried out in advance using generously dimensioned samples. However, the façade also retains its open character, which means that any moisture inside the car park can be easily removed at any time.

The creation of the Hargassner timber parking garage

[Translate to Englisch:] Holzparkhaus Hargassner

The Hargassner timber parking garage: a statement for sustainability

High degree of prefabrication = short construction time

In terms of the construction process, timber construction also scored highly in this project thanks to its high degree of prefabrication and its assembly-friendly connection principles in terms of assembly time. The WIEHAG assembly team only needed one working week for one of the ten storeys, which meant that the timber construction was completed after around ten weeks. At WIEHAG, a smooth construction process is always taken into account during the design, planning and production stages.

The two-storey day nursery was also built in timber. Glued wooden rib elements were also used in the ceiling and roof according to the WIEHAG system, which protects the clearance profile due to the high static usability and requires little support due to the large possible spans. The walls were designed as prefabricated timber frame elements.

We enjoyed co-developing, planning and implementing the timber car park project together with Hargassner Ges mbH and Matulik Architects. With their passion for innovation and their expertise in timber construction, WIEHAG Engineering is setting new standards for sustainable infrastructure.