Toronto Peter Gilgan Centre for Research and Learning | ?m | 21s | Sick Kids | Diamond Schmitt

March 01-11:
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Here's a video of the project to check out. Animated renderings a couple of minutes in!

[video=vimeo;15326563]http://vimeo.com/15326563[/video]
 
Interesting article from Daily Commercial News.....

A ballet of tight timing and logistics on Hospital for Sick Children Research Tower in Toronto
DAN O’REILLY

correspondent

Like the specialized research work to be conducted there when it opens, the concrete component of the new $419 million Hospital for Sick Children’s Research Tower in downtown Toronto is a tightly choreographed team effort.

Approximately 40,000 cubic metres of concrete will have been poured into the building by April 2012, exactly one year before it is scheduled for substantial completion, says Troy D’Ambrosio, general superintendent with general contractor EllisDon.

But getting that concrete into place and, in fact, almost every phase of the project that got underway in May 2010 is a massive logistical undertaking.

“There’s not a lot of room here,” says D’Ambrosio, in an overview of the building’s tight site in a very dense area with only limited time street parking for material truck deliveries.

Those deliveries have to be carefully scheduled and completed in a very short time. “They’re (the trucks) basically in here and then right out again.”

The congested site — now occupied by about 120 workers, two climbing cranes and other equipment —is only part of the challenge, he explains.

Designed by Diamond and Schmitt Architects with HDR, the L-shaped building will be comprised of a 22-storey main tower and an eight-storey podium that will house approximately 2,200 researchers. There will be 17 floors of open lab space, a 250-seat tele-education auditorium, plus meeting and conference rooms. The unique end use of the building will also be reflected in its construction, says D’Ambrosio. “This is not like a condominium where each floor is basically the same.”

Each slab of the podium and the first eight floors of the main tower will be different in terms of its thickness and configuration. As a result, the concrete formworks will have to be adjusted for each. After the eighth storey, the floor layouts and slabs of the remaining floors on the main tower are repeats, he explains.

To meet the project’s multiple and diverse challenges, a number of buildings strategies have and are being implemented.

When construction started, the 70 concrete caissons for the main tower were drilled from the surface because there were different cut-off points for the three levels of underground parking.

This lessened the amount of machinery and equipment needed on the already crowded site, he says.

The caissons ranged in size and dimension and that, in turn, necessitated the need for different sized augers and liners, he points out.

The tower has now been excavated to the third underground parking level and work continues in that area. The focus of the project for now is the podium tower. When the slab has been poured for the fifth floor — which is expected shortly — that floor will become the staging and storage area for materials.

The EllisDon crews will then concentrate on constructing the main tower to the fifth floor. When that point is reached, construction of the tower and podium will proceed simultaneously.
 

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