• Client: HRS
• Site management/reference person: HRS, Hamoudi Zinédine
• Site manager: Mathias Wyssen
• Foreman: Horst Theler
• Foremen: Peixoto Araujo Daniel, Raphael Wyssen
• Construction time: Shell construction from November 2021- August 2023
• Construction costs: 48 million

Technical data:

• 69'000m² formwork type 2
• 20'000m² formwork type 4.1
• 70'000m² slab formwork type 2
• 190m² circular formwork
• 6'900t reinforcement
• 57'600m³ concrete
• 1740 prefabricated columns
• 320 Prefabricated stairs
• 1125 Prefabricated walls

Project description:

A new urban quarter is being built in the heart of the city of Sion. This includes a parking garage with 625 parking spaces, a hotel with 100 rooms, a concert and congress hall with 600 seats, 5,800m2 of commercial space, 10,300m2 of office space and 302 apartments. The project covers a site of more than 16,000m2 and is due to be ready for occupation at the end of 2024.

The construction work was carried out by the consortium Walpen AG (30%), Dumas SA (30%) and Gebr. Zengaffinen (40%):

• Lead management: Zengaffinen Bros.
• Tech. Management: Walpen AG, Dumas SA and Zengaffinen Bros.
• Commercial management: Walpen AG

Requirements:

• High quality requirements
• Short shell construction time of around 18 months
• approx. 100 workers from the consortium incl. Subu on site
• Coordination in the construction management team
• Construction site is located directly next to Sion main station
• Construction site in the approach path of Sion airport
• Little installation space available