HIGHWAY CROSSINGS
MTO 2022-2013 Leslie Street Trunk Sewer
Scope of work completed:
- 4no. shafts of 5.5m internal diameter and depths of up to 12m installed in saturated silty-sand ground conditions.
- Installation of 240m of 600mm sanitary sewer by Microtunnel using our Herrenknecht AVN600 MTBM with drive lengths ranging from 60m and 105m.
- Due to the ground conditions on site and the risk of future settlement in the area, 1m long pipes were specified for a section of the project.
- Both Hydraulic excavator clamshell and crane clamshell buckets were used to excavate due to the saturated ground conditions.
- Precast Manholes installed and benched inside temporary shafts on completion of tunnelling works.
- Location: North York, Ontario
- Owner: MTO
- Role: Specialist Subcontractor
- Project timeline: September 2022-April 2023