Mammoet to support with roof replacement at Montreal’s Olympic stadium

GCPC is a consortium of construction firms comprising Pomerleau and Groupe Canam, both of which are from Montreal, Canada. It is tasked with replacing the current roof with a new fixed structure, which will have transparent glass to allow natural light into the stadium.

After being contracted by GCPC, Mammoet’s scope of work – which will be managed via the company’s Canada East subsidiary – includes providing mobile cranes to support with the demolition of the old roof, as well as engineering work to help lift and install the new roof.

The roof will be built inside the stadium on temporary supports and, once complete, Mammoet will use its Mega Jack 5200 to lift the structure 50 m in the air, and into place. Six Mega Jack towers will be used to perform the lift along with strand jacks, which will be used to stabilise the roof as it is raised.

“We lift heavy objects all the time, but making sure that our solution aligns with how the roof will be finally connected adds a unique dimension. This is why we came up with a custom engineering solution to perform the job,” said Justin Hope, project manager at Mammoet.

Additionally, Mammoet has designed special final adjustment devices to sit on the top of each lifting tower in the form of minituare skidding tracks, allowing for precise positioning of the roof once it is at the necessary height. The roof will remain raised on the jacking systems for two months, so that final installation work – such as attaching cables – can take place.

“Throughout the planning phase, they [Mammoet] have demonstrated their expertise, coordinating a bespoke solution to get the new structure lifted, positioned and ready for installation,” explained Serge Néron, deputy project directorate GCPC.

Earlier this week, HLPFI reported that Mammoet’s PTC-35 crane had been used to install eight steam generators at Bruce nuclear power plant in Ontario, Canada.