Skip to content

Graham Residence

 Residential Shoring: Complex Design Requires Innovation

A retaining wall was required to accommodate the architectural design for a private residence. The site topography presented the General Contractor (Builder) with the challenging task of constructing a retaining wall structure into a steep hill on a residential lot in the Mount Royal area of Calgary, Alberta. To accommodate the residence, extensive shoring was required along the property lines and the back alley of the site.

  • The retaining wall was designed by T.H. O’Rourke Structural Consultants Inc. as a Tied-back Shotcrete Shoring Wall with its excavation depths ranging from between 6.0m to 12.0m below-grade.
  • The length of the shoring wall is approximately 87.0 lin. metres with a total of 382 square metres of exposed surface area. The shoring design also reflects the structural Engineer’s requirement for a permanent retaining wall at the back of the property (deepest excavation).
  • In addition, the client accepted HCM’s proposal to provide monitoring of the permanent wall, which included the supply and installation of inclinometers and their subsequent reading for the duration of one year.
  • HCM completed the soil nailing operations with a TEI drill mounted on an excavator hoe.
  • The project required precision in placing the shotcrete shoring along the contour of the building envelope as a significant amount of the shoring was adjacent to the property’s steep slope.
  • Also, special emphasis was put on the sensitivity of the entire project with respect to neighboring properties, minimizing disruption, noise and vibrations to existing structures.

HCM Contractors finished this project on schedule and to the complete satisfaction of the Builder and Owner.

Client: Wiens and Company
Location: Calgary, Alberta

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

Twinning Tunnels

Twinning Tunnels The installation of a deep trunk sanitary sewer system in the bedrock beneath Erin Mills Parkway in Mississauga required an innovative approach for shoring manholes. For this project,
Read More

TTC Patten Building

TTC Patten Building HC Matcon was retained to install micropile foundation for TTC Patten Building on 835 Davenport Road, Toronto. The building was originally designed for storage of paper tickets
Read More

University of Ottawa STEM Complex

University of Ottawa STEM Complex HCM installed a 36,000 SF shoring system for the new STEM Complex at the University of Ottawa. To reduce the shoring schedule during the harsh
Read More

Weston Road

Weston Road The Metrolinx Weston Tunnel project will serve as a below grade rail corridor for the GO Georgetown line linking the airport to downtown Toronto. HCM was subcontracted by
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