Building construction railroad station

Cour de Gare à Sion: A city within the city

The 150 million "Cour de Gare" project is located near the SBB railway station in Sion. It is bordered by Avenue de Tourbillon to the north, Avenue de la Gare to the west, the Swiss railway tracks to the south and Avenue des Mayennets to the east. The neighbourhood plan envisages the construction of six buildings on a common base with two underground parking levels. The building will house 302 flats and provide, in future, around 25’000 m² for shops, offices and hotel rooms as well as a concert and congress hall for the city.

Our tasks

HOLINGER is responsible for:

Excavation and dewatering (earthwork area 15,700 m2, volume 100,000 m3).
Construction of the 2nd basement (car park) and 3rd basement (technical gallery) in the presence of the water table.
Construction of the invert and perimeter walls in yellow vat (in accordance with SIA 272 - Waterproofing and drainage of buried and underground structures).
Core structure (stairwell) in high-strength concrete.
Seismic design
Steel framework for mixed steel-concrete structure to limit deformations.
Facades with prefabricated reinforced concrete elements
Dimensioning and verification of prefabricated façade elements.

Much of the work takes place in the groundwater zone.