Stars + Steel: OCAD
Construction and Erection: Central Lobby
The front wall of the main lobby used round HSS columns as their primary means of support. This frame was fabricated and assembled on the ground and lifted into place in one piece. It is an AESS element and its fire protection is provided by the use of an intumescent coating. The supply air to throw heat on the glazing and prevent condensation runs through these columns. If you look carefully you can see the holes that have been drilled into the face of the column that will be at the back of the glazing.
Images: PCL Constructors
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The central part of the red frame fully assembled on site awaiting the crane for lifting. To save costs it is important to required the least number of cranes and to make sure that the steel arrives at the site on an as needed basis. This also addresses problems with the space required to stage and store the material. |
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A view down on the central part of the front frame fully assembled. The steel for this elevation was assembled into the maximum sized elements to ensure that the majority of welding took place in the shop. |
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The central portion of the front frame suspended still from the crane. |
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Columns and horizontal supports were added to either side of the central frame to complete the elevation. |
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The frame is tied back to the concrete elevator core by a steel roof. As the roof steel will be concealed, the connection techniques and section types can be quite different as it is not AESS like the front frame elements. |
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A view to the base of the front frame. The main entrance to the school is recessed below sidewalk level as can be seen from the ongoing sitework. |
