Brookfield Properties Management Corporation
2,050,000 sq. ft.
The Brookfield Place project involved the construction of a 56-storey commercial tower with six levels of underground parking, including a loading/unloading dock facility. At a height of 247 metres, it is currently the second-tallest building in Alberta.
Brookfield Place targeted LEED® Gold Core and Shell Certification through five initiatives:
1. Water efficiency through the use of water-conserving plumbing fixtures;
2. Reuse of roof storm water for site irrigation;
3. High-efficiency heating and energy reclamation through enthalpy wheels;
4. High-performance glazing and building envelope;
5. Increased ozone protection through elimination of CFC refrigerants.
This project was constructed with cast-in-place reinforced concrete below grade and a cast-in-place reinforced concrete core above grade. The above-grade floors were constructed using steel beams, joists, metal decks and poured concrete floor slabs. The electrical features include a microprocessor-based detection system and fire alarms, and a computerized security system with card-operated control access. All elements are composed of modular construction for efficient servicing. The mechanical features of this project include life safety systems with smoke control, high-efficiency plumbing and heating systems, and automated special systems to control the overall building.
Challenges and Solutions
Challenge: Logistically speaking, the site itself presented EllisDon with challenges. The construction team’s access was limited in two directions by Light Rail Transit tracks to the south, and a six-level above-grade parkade to the west.
Solution: The solution to the problems posed by limited access was found in things like off-hours deliveries and a close coordination of trades.
Challenge: Another challenge came in the form of the Calgary winds, which have the potential to reach over 100km/h in only a few hours.
Solution: These winds required all materials to be securely tied down. An early warning system was set up with the City of Calgary so that EllisDon would receive advance notice of potential problems, which would initiate the activa-
tion of additional safety measures.
Challenge: The proximity of existing buildings around the site limited the swing radius of the crane.
Solution: EllisDon installed a monitoring system on all of the cranes so that an alarm was activated in the operator’s cab whenever it crossed a predetermined position in relation to another building. The swing radius was arranged
beforehand with the City of Calgary. This measure prevented the crane from swinging over the LRT tracks or making contact with adjacent structures.
Challenge: With site congestion and downtown tower construction there is always a risk of harm to the public or construction crew.
Solution: EllisDon implemented the 8 Safety Absolutes Program at Brookfield Place. Violation of any of the eight items, which were included in every single subcontract on the list, resulted in instant dismissal.
The 8 Safety Absolutes are:
1. Fall protection required;
2. Housekeeping on a continual basis;
3. Tool lanyards must be worn;
4. Substance abuse is not tolerated;
5. Proof of training for operators;
6. Hot work carried out under specified requirements;
7. Verify isolation before work begins;
8. Obtain authorization for all procedures.