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YORK UNIVERSITY STATION – Two Bauer BG40 drill rigs installing caisson wall

YORK UNIVERSITY STATION – Two Bauer BG40 drill rigs installing caisson wall

The Toronto-York Spadina Subway Extension (TYSSE) project is an 8.6-kilometre extension of the Toronto Transit Commission’s Yonge-University-Spadina subway line from existing Downsview Station to the Vaughan Metropolitan Centre at Highway 7.

In 2011, The Anchor Shoring Group began construction of nine shoring projects along the TYSSE line.

Anchor provided up to 14 drill rigs simultaneously across multiple project sites drilling over 2,300 holes for a total drill length of 165,000 feet, or just over 50 kilometers and pouring over 16,000 cubic meters of concrete.

Overview of Anchor Shoring TYSSE Projects

Overview of Anchor Shoring TYSSE Projects

The Anchor Shoring Group completed the following caisson wall contracts:
  • Highway 407 Station – Bus Terminal
  • York University Station
  • North Wye
  • South Wye
  • 2 Cross Passages
    CP5
    CP7
  • 3 Emergency Exit Buildings
    EEB4
    EEB6
TTC
Highway 407 Station – Two Bauer and one Liebherr drill rigs install caisson wall

Highway 407 Station – Two Bauer and one Liebherr drill rigs install caisson wall

In many areas drilling was completed in close proximity to traffic, utilities and existing structures. Site conditions required close coordination and cooperation with general contractors, subcontractors, and adjacent property owners. In light of these challenges, The Anchor Group completed up to 8,345 feet of drilling and 111 holes per week with hole depths up to 110 feet and 1,500 mm in diameter.

YORK UNIVERSITY STATION – Overview of caisson wall drill holes; over 60,000 linear feet of drilling.

YORK UNIVERSITY STATION – Overview of caisson wall drill holes; over 60,000 linear feet of drilling.

YORK UNIVERSITY STATION – 3 Rig caisson wall setup

YORK UNIVERSITY STATION – 3 Rig caisson wall setup

YORK UNIVERSITY STATION – Exposed caisson wall and bracing

YORK UNIVERSITY STATION – Exposed caisson wall and bracing

YORK UNIVERSITY STATION – Exposed caisson wall and bracing

YORK UNIVERSITY STATION – Exposed caisson wall and bracing

HIGHWAY 407 STATION - Overview of caisson wall drill holes; over 50,000 linear feet of drilling.

HIGHWAY 407 STATION – Overview of caisson wall drill holes; over 50,000 linear feet of drilling.

HIGHWAY 407 STATION – Two rig caisson wall setup

HIGHWAY 407 STATION – Two rig caisson wall setup

North and South Wye – Two Bauer rig caisson wall setup

North and South Wye – Two Bauer rig caisson wall setup

NORTH WYE – Exposed caisson wall and bracing

NORTH WYE – Exposed caisson wall and bracing

EEB4 – Caisson wall set up

EEB4 – Caisson wall set up

Members of the Anchor crew at York University Station

Members of the Anchor crew at York University Station