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Main entrance SOE traffic deck and utility support

Finch LRT- Keele and Humber Stations and CP Rail Tunnel

Toronto, Canada

The Finch LRT stations at Keele and Humber College are new, below-grade facilities.

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Construction Engineering
Transportation

Finch LRT- Keele and Humber Stations and CP Rail Tunnel

Main entrance SOE traffic deck and utility support

Toronto, Canada

The Finch LRT stations at Keele and Humber College are new, below-grade facilities.

At Keele, the station is entirely below grade with Finch Avenue on the roof structure, and the TTC subway station immediately below the track level. The concourse level of the Keele station is below the track and level with the underside of the TTC box. Limited unwatering is possible at the Keele station, requiring a watertight excavation. The temporary structure will be incorporated into the permanent structure at both stations.

The CP Tunnel is a crossing under the CP mainline double track. The work will be completed using shoring and trestle spans installed during short-term closures, followed by excavation below the trestle to facilitate tunnel box construction.

Entuitive provided Support of Excavation and Temporary Structure Design Services for three components. The work on these projects is ongoing at this time.

location

Toronto, Canada

Contractor

Mosaic Transit Group

Prime Consultant

Mosaic Transit Group

Client

Mosaic Transit Group

Owner

Metrolinx

Role

Construction Engineering Consultant

Finch LRT Portal Support of Excavation

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Challenge

The principal challenge for the support of excavation design in all three cases is to provide a shoring system that is both cost-effective and meets the stringent deflection criteria for this type of work. The work must be carefully coordinated with the permanent structure design to facilitate its integration.

Solution

Entuitive has achieved these goals through the application of sophisticated analysis, careful development of staging, and careful review of constructability requirements. Developing the staging for the CP Tunnel was particularly complex because of the very limited closures available and the concerns with track movement.

Learn more about how Entuitive approaches engineering challenges, and discover why Engineering Performance matters for your project.

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