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Prevention of Velocity Effects - Erosion Corrosion and Cavitation

PROJECT: Dormitory, University of Quebec at Montreal
LOCATION: Montreal, Quebec
APPLICATION: Cladding
ARCHITECT: Boutros and Pratt Architects, Montreal, Quebec
CONTRACTOR: Revmet Inc., Boucherville, Quebec
METAL SUPPLIER: Canadian Brass & Copper, Concord, Ontario



DESCRIPTION:
One of the first major installations of the new tin-coated copper sheet FreedomGray™ produced by Revere Copper Products, of Rome, New York, has been completed in Montreal. The dormitory and commercial building for the University of Quebec at Montreal was designed by Boutros and Pratt Architects of Montreal and is located at René Lévesque and Saint-Laurent Boulevards, on the west side of the UQAM campus. It is a striking example of contemporary architecture that enlivens an underutilized section of the eastern downtown.

Tin-coated copper sheet was selected because of its predictable, uniform gray colour, which does not patinate like bare copper. Many architects and their clients are now investigating “gray” copper options such as tin-coated sheet simply because they do not want to wait for 10 to 20 years for the bare copper to patinate before the building’s final appearance is achieved. In addition, because the base material is copper sheet, in this case 16-oz. (heavier weights are available), the material still has the very long service life of copper.

The tin-coated material is primarily used for cladding the north side of the UQAM building. The panels run horizontally, interrupted by punch windows at regular intervals. The effect is a finely detailed shiny box that floats above the mass of the building, separate from the rest of the structure. As well, the lustre of the tin-coated copper is very pronounced, especially on sunny days, making the contrast between the materials that much more noticeable.

The 16-oz. FreedomGray™ sheet was configured in a standing seam and then installed over a slip-sheet, a membrane and an OSB nailing surface, which provides continuous support to the copper. Cleats were used to fasten the panels to the substrate, using stainless steel fasteners to avoid any potential for galvanic corrosion between dissimilar materials.

™ - Trademark


Adapted from Canadian Copper, No.150




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