Twinning of the West Trunk Sanitary Sewer

HC Matcon - Twinning of the West Trunk Sanitary Sewer

Twinning Of The West Trunk Sanitary Sewer

This project includes the installation of a deep trunk sanitary sewer within bedrock under Erin Mills Parkway in Mississauga. HCM together with RWH Engineering proposed an innovative and economical design and construction process for shoring the manholes and access shafts using caisson compression rings. Challenges that had to be dealt with included designing the compression ring to withstand large uneven surcharges caused by a close embankment in addition to large surface loading by a crane. To ensure the safety of the shoring system RWH Engineering is providing precession monitoring utilizing inclinometers.

Client: McNally Construction

Location: Mississauga, Ontario


Twinning of the West Trunk Sanitary Sewer - Caissons

Alloa Feedermain

Alloa Feedermain

This project involved installation of 3 watertight caisson wall shafts. Two rectangular secant pile wall shaft approx 12m deep and one 6m diameter compression ring shaft approx 7m deep. In order to achieve the tight tolerance needed to ensure the shafts were in fact watertight the use of a guide wall was implemented. The guide wall was installed using Styrofoam form and concrete to allow drill casing to be perfectly centered over the drilled holes.

Client: McNally Construction
Location: Brampton, Ontario