Project category

Industrial and Commercial

Location

Sept-Îles, Qc

Value($)

13 000 000

Realisation mode

Turnkey

Customer

Alcan Alesa Technologies ltée

Year

2003-2004

Additional informations

Construction of three silos used for alumina stockage

Main Work Performed

• Excavation
• Formwork and concrete of silos using sliding formwork
• Reinforcing steel
• Post-tensioning work
• Metal roofing and waterproofing

Special Features of the Work and Methods Used

• Construction of three silos with a dimension of 33 m diameter and 65 m high and one silo with a dimension of 20 metres in diameter and 50 m high
• Silos continuously constructed using a sliding formwork (slip form). Concrete work, installation of reinforcing steel and installing post-tensioning ducts were made continuously and simultaneously around the clock (seven days, 24 hours)
• The reinforcing steel workers had to work more than 200 feet high and they had to deal with bad weather (strong winds and cold temperature) and a small working space
• Innovative turnkey project

Honours and Distinctions

• Armatura 2004, awarded by Institut d’Acier d’armature du Québec (IAAQ) in the category « Industrial » for the construction of three silos at the Alouette Aluminium Plant Phase II