1. CROSSTOWN LRT
Construction Liaison
Committee
August 8, 2017

2. Agenda
• Fairbank Station
• Oakwood Station

3. Fairbank Station Aerial View
Main
Entrance
Service
Building
Secondary
Entrance

4. How We’re Building Fairbank Station:
Support of Excavation – Top Down
• Also known as ‘shoring’ or ‘piling’, support of
excavation is a common step in the process of
constructing a building.
• An area the size of the station’s footprint
(about 100m x 20m) called the ‘station box’ is
cut, steel piles are installed around the
perimeter, a shallow area is excavated, and
braces and tie-backs are installed at the sides
to support excavation.
• A concrete roof slab is constructed and placed
over top of the excavated area, restoring
traffic while crews work safely underground.
• Support of excavation at Fairbank Station will
take approximately 1.5 years to complete

5. Fairbank Station Construction Update
Complete
 Demolition at the Service Building
 Installation of geotechnical monitoring equipment
 Telecommunication utilities relocation
 Piling at the Main Entrance and Service Building
 Hydro utilities relocation
2017
• Continue piling on the north side of Eglinton Ave W
• Continue wet utilities relocation work on Eglinton Ave W
• Implement traffic staging on the south side of Eglinton Ave W and commence piling

6. Current Construction Staging

7. Construction Progress Pictures

8. Construction Progress Pictures

9. Construction Progress Pictures
WATERMAIN
CUT-AND-CAP
WORK

10. Construction Progress Pictures
GUIDEWALL
CONSTRUCTION

11. Construction Progress Pictures
PILING
NORTHEAST
STATION BOX

12. Oakwood Station Concept: Aerial View
Main
Entrance
Secondary
Entrance
*60% rendering
Accessible Entrance

13. The main entrance and
technical box are
designed with an art
feature to animate and
highlight the view from
Oakwood Avenue.
Oakwood Station Concept: Main Entrance
Outdoor
bicycle parking

14. On-street
connections to
TTC Buses
Oakwood Station Concept: Secondary Entrance
Outdoor
bicycle parking

15. How We’re Building Oakwood Station:
Support of Excavation
• Oakwood Station is being constructed using a
mined method known as Sequential Excavation
Method or SEM. The first stage is support of
excavation.
• Support of excavation (shoring) is a common step in
the process of installing the foundation of a
building.
• In the first stage, crews will install
steel piles around the perimeter
of the entrance. This has been
completed at both entrances.
• In the second stage, crews
excavate the area level by level,
installing braces and tie-backs as
they progress. This work is
underway at the main entrance.

16. • Mining occurs from inside of the excavated main
entrance after the support of excavation is
complete.
• The underground area to be excavated is divided
into manageable segments and the segments are
excavated in a planned sequence.
How We’re Building Oakwood Station:
Sequential Excavation Mining Method
• Within the mined area, the
station box is constructed
accommodating the rail
tunnels, associated
platform and rail
infrastructure.

17. Oakwood Station Construction Summary
2016
 Geotechnical Investigation completed
 Demolition 1578-1584 and 1611-1619 Eglinton Ave W completed
 Stage one of long-term closure (main entrance)
 Support of excavation (shoring) work started at Main and Secondary entrances
 Temporary traffic signals installations
 60% design completion
2017
 Piling operations completed at both entrances
 Temporary power works completed (Civil works completed, energization pending
crane assembly)

18. 2016 Progress

19. Oakwood Station Construction Lookahead
August/September 2017
• Excavation at main entrance - underway
• Geotechnical Instrumentation and Monitoring Plan (phase 2 installations ) –
ongoing periodically
• Overhead crane assembly at main entrance - underway
• Site service connections (water & sewer) - upcoming
– Starting August 14st
– Some overnight work to reduce impacts at intersection
• Stage 3A set up late August/early September 2017 (Staging under review)
• Dewatering wells installation on the sidewalk along Eglinton (south and north
side)
2017
• Utilities Protection (Sewer lining and replacement, work on the watermain)
• Mining work late 2017 (from main entrance)

20. Site Service Connections

21. Dewatering System Installation & Operation
• The term “dewatering” means pumping from the ground water at a site where
there will be excavation.
• Wells will be drilled in the ground and will be connected above ground in the area
required.
• System will operate for the duration of construction (2020).

22. Oakwood Stage 3A Revised
2017 - 2020

23. Progress Picture

24. Progress Picture

25. Progress Picture

26. Local Area Map