Centre Block Underground Services Building - Parliament Hill

Click to Enlarge


Project Type: Institutional

Project Stats:

  • completed on schedule with tight timelines
  • massive rock excavation
  • 10' tunnel through rock under Parliament
  • two storey services building underground
  • major heritage restoration included

Project Information:

Contract type: General Contracting
Completion: August 1998
Owner: Public Works and Government Services Canada
Architect: Culham Pedersen Valentine
Structural: Culham Pedersen Valentine
Mech/Elec: TMP Consulting Engineers

The CBUS building is a two storey, underground structure, adjacent and connecting to the Centre Block of the Parliament Buildings. The facility is equipped with state of the art communication infrastructure, electrical supply and emergency services to Parliament Hill. A significant challenge to the project was the completion of the massive rock removal adjacent to the heritage structure during the summer recess

The facility also offers space for maintenance shops, material handling and storage. Doran, working closely with Taggart Construction, were able to complete the technical challenges, excavation and tunnels (including the use of a 10' diameter TBM - Tunnel Boring Machine) without disturbing the adjacent building. Doran delivered the project on time in a difficult and very complex environment.

Inherently, this project had very sensitive historical considerations; Doran worked tirelessly with heritage groups to ensure that the history of the building was not compromised.  Careful mapping of each stone was required.  Boring of ten feet diameter tunnel through the rock under the building and the blasting adjacent to the building required detailed sophisticated monitoring.