1

Jamie RobinsonDirector, Communications and Community RelationsToronto Expansion Projects, Metrolinx

Chaplin Grout Plant and Headwall ConstructionSpring 2014Councillor Stintz BriefingFebruary 3, 2014

2

Eglinton Crosstown LRT

Project $4.9 B (2010$), funded by the Province of Ontario

19 kilometres east-west LRT from Kennedy to Jane/Black Creek, including 10 kilometers of tunnel

Connections to Yonge-University-Spadina Subway, Scarborough RT and GO Stouffville

Up to 26 stations

3

Tunnelling Works 2014

4

Tunnelling Update

TBM 1 is well underway with tunnelling; just recently bored through our west headwall at Keele St.

TBM 2, a twin machine, has been assembled and is following closely behind

5

Tunnel Drive Sequence

2. Construct Extraction Shaft

1. Construct Tunnel Launch Shaft

6

Tunnel Drive Sequence

Install Jet Grout Block “Headwalls” from Surface

Commence Mining Twin Tunnels

7

Tunnel Drive Sequence

Mine-Through Jet Grout Blocks

8

Tunnel Drive Sequence

• Excavate Station and Commence Removing Concrete Tunnel Liners

After Tunnel Contract:•Install Station Sidewall and Headwall Support of Excavation

Finally:•Station Box Fully Excavated & Tunnel Lining Removed (Not shown)

9

Launch Shaft Tunnel Boring Machine

10

Tunnel Drive Works 2013

11

Tunnel Drive Works Current Status

In 2013 the majority of tunnel works took place between Black Creek Drive and the vicinity of Allen Road

In 2014 work continues east of Allen Road Crews are starting the construction of headwalls and utility

relocation at future station sites along Eglinton Avenue West

12

Tunnel Drive Works

Headwalls: Temporary support walls for future excavation of the LRT stations.

Made of concrete and installed to the depth of the future track level

Two methods of installation used: Secant Pile Walls, Jet Grout

Machinery including drill rigs, grout tanks, diggers and other equipment

13

Tunnel Drive Works

Secant pile wall : formed by intersecting concrete piles

Jet grout wall : uses engineered grout to form wall in situ

14

Jet Grout Headwalls

15

16

Grout Plant for Headwall ConstructionWhy a grout plant at Chaplin?Headwalls for Chaplin requiredGilgorm adjacent to work siteGilgorm to remain open one lane northboundAllows efficient use of spaceOther options examined included Vesta Drive and EglintonGilgorm preferred because of:

reduced property impactreduced footprint on Eglinton Ave.

17

The site will be situated on Metrolinx-owned property and occupy City of Toronto roadway

A fence will enclose the site to demarcate the site from the public roadway throughout the entire works

The plant will service headwall construction for Chaplin Station and cross-passages at Vesta Dr and Castle Knock Road

The site is expected to be in place for approximately 8-10 months

Grout Plant at Chaplin

18

Grout Plant at Chaplin

Advantages of jet grout technique for headwall installation:Reduce requirement for extensive utility relocationOverall construction time savings

19

TimelineWith appropriate permissions in place Metrolinx’ contractor will:Begin to set up the grout plantInstall fencing and secure the perimeterInstall grout lines in the roadwayTest worksBegin Chaplin headwall construction worksChaplin headwall construction is currently scheduled to commence in March 20148-10 months anticipatedHeadwall works at Avenue Road and Bathurst are currently being reviewed

20

Chaplin Work Staging- South Setup

Work is set up on the south side of Eglinton The work zone is separated from the ROW with concrete

barriers and fencing Unoccupied traffic lanes remain open on the north side of

Eglinton with one lane in each direction Through-traffic southbound on Chaplin at Eglinton will not be

permitted Southbound traffic must exit at Eglinton or choose an

alternate route Expected duration: Approximately 4 months

21

Chaplin Work Staging- North Setup A work site is set up on the north side of Eglinton The work zone is separated from the ROW with concrete barriers and

fencing Unoccupied traffic lanes remain open on the south side of Eglinton

with one lane in each direction Through-traffic northbound on Chaplin at Eglinton will not be

permitted Northbound traffic must exit at Eglinton or choose an alternate route Expected duration: Approximately 4 months Latimer Avenue is closed to/from Eglinton during this phase

22

Chaplin StationPlan View

23

Chaplin StationPreliminary Station Concept

Looking West

24

Chaplin StationEntrance Locations

Primary Entrance Secondary Entrance

Secondary Entrance

25

Next Steps

Community Relations will outreach to specific condos and apartment buildings to raise awareness of the site and planned works

Co-ordination with TTC will continue to ensure continued bus service

Co-ordination with local Fire Station also continues to ensure service levels

26

www.metrolinx.com

Thank you