Skip to content

Twinning Tunnels

  • Caissons

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, HCM was contracted to install nine caisson wall compression rings at various locations. RWH Engineering Inc. (RWH), an HC Group company, provided an economical design for the shafts which had diameters of up to 11 meters and depths up to 50 meters.

RWH overcame several design challenges on this project including the consideration of the compression rings to withstand large uneven surcharges due to a close embankment as well as significant crane loads. To ensure the integrity of the shoring system, RWH provided the precision monitoring services.

This project required the installation of the compression rings into the bedrock to support the overburden. HCM successfully implemented RWH’s innovative design which did not include a bench at the top of the bedrock, as commonly seen in compression ring design. This resulted in a reduced diameter of the compression rings, significantly reducing the amount of bulk excavation required as well as installation time.

The project exemplifies HCM’s ability to find effective solutions to complex projects to minimize construction time.

Location: Mississauga, Ontario

Customer: McNally Construction Inc.

The Bow

The Bow

/ ,
The future Bow building, located in Calgary, Alberta Canada, is an innovation in both architectural and shoring design. At 58 stories and with a footprint of two city blocks, The
Read More

Silver Creek Solar Farm

/
Silver Creek Solar Farm For this project, HCM provided installation services to EllisDon for the helical pile foundations for future solar racking. Due to the stringent timelines and project milestones,
Read More
Milton Grade Separation

Milton Grade Separation

/
Milton Grade Separation Client: BOT Construction Location: Milton, Ontario
Read More
Weston Tunnel Grade Separation

Weston Tunnel Grade Separation

/
Weston Tunnel Grade Separation HC Matcon achieved a significant milestone on the Weston Tunnel project, allowing for the GC to accelerate the schedule and make up for project delays. HCM
Read More

Maxwell Bates

/
Maxwell Bates This project, located on Fourth Street in the downtown core of Calgary, consisted of a tied-back continuous caisson wall.  The caisson wall provided zero ground loss and minimal
Read More
Mill Pond Estates

Mill Pond Estates

/
Shotcrete: Low Cost and Overcoming Hillside Access Issues This 12,000 sq. ft. project involved temporary hillside shoring for a developer in Tillsonburg. The project was completed during winter months with
Read More