Skip to content

TTC St. Clair Station

Overcoming Tight Access and High Water Table

Two new elevators on the east and west sides of St. Clair station were installed to allow easier access for disabled persons. During construction, HC Matcon was confronted with some interesting challenges, including extremely tight access and a high water table.

  • The east elevator pit was constructed with a 10 m deep caisson wall, braced horizontally against the existing subway structure. Piles were drilled with a Bauer BG 22H self-lining drill in order to overcome the high groundwater conditions.
  • The west elevator pit was constructed with an 8 m deep lagging wall, the piles for which were drilled in a single weekend in order to comply with TTC and City of Toronto access restrictions.
  • HC Matcon’s excavation operations were aided by our own dewatering systems installed at each elevator pit.
  • A total of 4 deep wells were effectively used to lower the water table below final excavation grade.

Client: Consolidated Canadian

Location: Toronto, Ontario

Oshawa Mall

Oshawa Mall The Oshawa Mall expansion was a large project that required several foundation and shoring services. HCM met the needs of the contractor by providing both tied back and
Read More
Mars B Toronto General Hospital

Mars B Toronto General Hospital

This 3.5 Million dollar contract involved HC Matcon providing a full excavation, a 16,000 Sq. Ft. shoring and large diameter caisson package for this project. Challenges included the support of
Read More
Bluwater Condominiums

Bluwater Condominiums

The Pemberton Group is adding the luxury waterfront Bluwater Condominiums to its portfolio. The 22,000 SF area of shoring area will accommodate the construction of three eight-story buildings on the
Read More
Scarborough Hospital

Scarborough Hospital

A Design-Build Solution The Scarborough Hospital was adding a new Critical Care Centre in the courtyard surrounded on all sides by existing hospital structures.  HC Matcon’s scope of work included:
Read More

Pixel by Battistella

Pixel by Battistella HCM was contracted to provide the design and installation of shoring system for a 110 unit building consisting of town homes, studios and condos. This development was
Read More
Telus Sky tower - HC Matcon

Telus Sky tower

Telus Sky tower The Telus Sky tower will be the 3rd tallest building in Calgary with the deepest basement excavation in western Canada. HCM Group took on the challenge of
Read More