After adding a second tier, now PCL is building a large roof over the fixed seating of BMO Field. Huge prefabricated beams are transported to Toronto all the way from Montreal.

Go behind the scenes of BMO Field’s phase two expansion with PCL Senior Project Manager Neil Barrows in this video update to watch a 600-ton crane lift roof sections into place, and learn about the complex engineering and planning involved in creating a new stadium within an existing structure.

The massive roof trusses will be supported by four super-columns constructed in each corner of the stadium. The super-columns have been engineered to plug into bedrock using a system of micro piles drilled 7 meters into the ground.

The east and west roof canopies are being built on-site in sections, and the south canopy will be assembled on site as one massive structure, to be lifted into position by the 600-ton and 450-ton crane.

PCL completed the first phase of the two-year BMO Field Expansion project, a 12-month renovation compressed into just eight months, in time for Toronto FC’s home opener in May, 2015. Phase 1 included expansion of the east grandstand, the addition of a continuous concourse level and kitchen, and enhancements to washrooms, concessions, and executive spaces.