Issue link: http://digital.canadawide.com/i/109465
the current project, ���so having access to original construction drawings and specifications helped us to refine our materials selections.��� Window replacement is a key aspect of the revitalization and much thought went into selecting double-glazed windows. ���We were able to develop a detail for the mullions that was very similar to the original,��� says Barkhurst, ���both when viewed from outside and from the inside. We were fortunate that there was enough space in the detail to accommodate the two panes of glass. We took the same approach for the tower at 77 King Street West and we were able to reduce heat loss in the building by 50 per cent, a great gain in energy savings.��� The renovated lobby retains the critical elements of the original design, while bringing in up-to-date enhancements. ���The renovations included a thorough cleaning of the floors and walls, and the addition of new information desks that were modernized in terms of functionality,��� says Barkhurst, ���but we maintained the historical style to sufficiently meet heritage standards.��� The restoration of the spacious public square continues to be a major part of the revitalization program. ���The drainage issues with the existing system were significant enough that we ended up replacing the stone over the entire plaza,��� says Barkhurst, ���detailing the drainage system in a way that provided a greater drainage capacity and gave the plaza a clean look. The fundamental esthetic of the tower is true to its TD Bank Tower Revitalization p102-103TD BankTower.indd 103 historical origins, with this revitalization serving to ensure that the TD Centre continues to be an iconic landmark for Toronto, as well as a key part of our modern financial district.��� PCL Constructors Canada Inc., also responsible for the work at 77 King Street West, is tackling this project. Thus far the windows on 34 floors have been replaced, along with installing perimeter radiator units on three floors. The window replacement process began early on, starting in the summer of 2011 when advance teams studied each floor to determine obstacles and efficient routes to move the new windows from the freight elevator to the staging areas. ���We replace the windows from the inside,��� says Jack Eskander, PCL���s project manager, ���but we also need people outside on the swing stage to support the crews inside.��� The existing exterior frames are being retained. Save for the top two floors which have taller windows, the glazing is a single, standard size. In total, 7,632 window units will be replaced. It takes about seven working days on average to complete one floor and following the previous experience, the crews started out at a solid stride based on lessons learned. ���But we can���t accelerate our schedule too much because of the disruption to the tenants,��� says Eskander, ���so we have to find a happy medium.��� Oldcastle Building Envelope is installing the new windows. David Chung, Oldcastle���s project manager, whose firm also replaced the windows at 77 King Street West, explains that in addition to a site visit to the floor (four weeks prior to the work), updates are provided to the tenants and a floor plan is drawn up to efficiently complete the work. ���It also identifies what disruptions there will be in regards to millwork, drywall being modified or seams being opened and what will happen within that one-night period,��� he says. On the day of the work, IT crews remove electronics and furniture and at 7:00 p.m., the window replacement process begins. ���It took us a long time at the beginning ��� months of figuring out the best way to do this is and how to minimize the effect on the client and tenants,��� says Chung. ���We���ve had some phenomenal comments such as ���we can���t even believe you guys were here last night.��� We���re working like a fine-tuned clock ��� we���ve done so many floors, that even with the complexity of a unique one, we have ways to work around it.��� He credits PCL for coming up with a safety system that allows Oldcastle crews to work with open windows. ���It���s such a unique project [and] shows what a positive environment it can be when the contractor, all of the subtrades, tenants, and building owner are Location 66 Wellington Street West Toronto, Ontario Owner/Developer Cadillac Fairview Corporation Ltd. Architect B+H Architects General Contractor PCL Contractors Canada Inc. Mechanical/Electrical Consultant H.H. Angus & Associates Ltd. Building Envelope Consultant Zec Consulting Inc. Glazing Erector/Supplier Oldcastle Building Envelope Coating Consultant Wiss, Janney, Elstner Associates Inc. Elevator Consultant KJA Consultants Inc. Landscape Architect Janet Rosenberg + Associates Total area 1,332,000 square feet (rentable area) Total Revitalization cost $60 million on the same page and understand that the work needs to be done,��� says Chung, who notes that crews have dealt with issues such as valuable art work, expensive interior design features such as millwork and wallpaper. ���The solutions are simple if you keep everyone on the same information level.��� Zec Consulting Inc., the building envelope consultant, is reviewing the window replacement and the repainting and re-caulking of the tower���s entire facade. After the windows are replaced, painting crew moves in to prepare the surfaces for painting. The caulking crew follows once the new paint has cured. ���The logistics of this project are extremely complex,��� says Vera Zec, director of the company. ���The project is phased through a multi-year program since the paint and caulking applications are weather dependent. Exterior temperature, including moisture and humidity, must be within particular levels so there is a window of a few months in the spring and summer when this work can be completed.��� ��� february 2013��� ��� /103 13-01-22 4:08 PM