This project consists of the rehabilitation of and new additions to the four-story West Block, one of Canada’s Parliament Buildings. This building received the "Classified" designation in 1987 from the Federal Heritage Buildings Review Office (FHBRO). Besides its unmistakable architectural value, the West Block houses ministers, members of Parliament, their employees, committee rooms, and an important ceremonial space—the Confederation Room. The first phase of the building was designed in 1859 in the Gothic Revival style, and officially opened in 1865. Major renovations to the interior and exterior of the building were completed in 1965.
PCL’s contribution to this rehabilitation includes the restoration of existing exterior load-bearing stone walls, rubble-fill walls, and sculptural stone elements, as well as the replacement of outmoded building systems. The existing copper roof will be replaced, and the windows will be restored and/or replaced. The reconstruction will restore structural integrity and upgrade seismic capabilities.
Approximately 115,000 square feet of new permanent building space (largely below ground) will be added to the building’s existing 176,300 square feet of gross floor area. The courtyard will be enclosed with a glazed roof over the new House of Commons Chamber. The courtyard infill structure is a composite of structural steel tree column framing, an intersecting steel truss space frame, and a four-layer roof pillow assembly designed to actively control environmental conditions within the chamber.