45/81 Bay, CIBC Square
A high-rise office and transit podium project where the structural story is inseparable from Union Station, rail protection, and the GO bus station.
The experience source identifies 45 Bay Tower as a 58-storey office tower with a podium, three basement levels, and a Metrolinx bus station at ground and level 2. Dr. Biswas was responsible for the 900 mm deep post-tensioned slab supporting the bus station, transfer truss work, podium columns, and a 100 m long north foundation wall acting as both shear wall and train-derailment crash wall.
Engineering focus
- 24 m clear span level 2 bus station slab.
- 90 tons of PT in 167 ducts, with intensive shop drawing and site coordination.
- Over 3,000 tons of rebar, 240,000 stirrup legs, and 7,500 welded couplers noted in the deck.
- High-rise podium
- Post-tensioned slab
- Transfer truss
- Crash wall
- Rail corridor