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CROSSTOWN LRTConstruction Liaison
CommitteeJuly 5, 2017
2
Agenda
• Avenue Station Update
• Chaplin Station Update
3
Year Quarter Construction Activity / Closure
2017
Q1
(Jan-March)
• Piling at Main and Secondary entrances
• Enclosure of park and tree removals
• Geotechnical Instrumentation and Monitoring Phase 2
Q2
(April-June)
• Excavation at Main and Secondary entrances
• Geotechnical Instrumentation and Monitoring Phase 2
• Dewatering system installation
• Temporary Site Services Connections
Q3
(July-Sept)
• Utilities mitigation (Sewer lining and water main replacement)
• Dewatering system installation continues
• Excavation continues at both entrances
• Crane installation at both entrances
Q4
(Oct-Dec)
• Excavation continues at both entrances
• Dewatering system operating
• Start of mining operations
Avenue Station: What to Expect in 2017
4
Avenue Station Updates
July 2017• Excavation continues at Main & Secondary Entrance
• Excavation is completed one level at a time with tie backs and supports installed before moving to next level
• Monitoring instrument installations continue from Lascelles Blvd to Braemar Ave ongoing; over70 instruments being installed
• Sound Wall Installation at secondary entrance (main entrance north side erected)
• Sound Wall foundation works starting July 10, this requires access to secondary entrance site from laneway
• Vehicles will be provided access as required; there may be a short delay while equipment is relocated
• Dewatering well installations – underway
• Utilities mitigation works – upcoming
• Watermain investigations planned for overnight July 26
• Sewer & water main works
5
Secondary Entrance Sound Wall
• Foundation work for the sound barrier wall at the north side and a portion of the west and east sides of the secondary entrance to begin Monday, July 10th
• This wall is engineered for maximum sound reduction and will be in place until construction of the station nears completion
• Wall will be approximately 5.95m
* Example from main entrance
6
Support Works – Watermain Investigation
• Prior to finalizing water main replacement works, investigations will be completed to confirm existing conditions of the watermains in the area. It has already been determined that one of the pipes will need to be replaced.
• CTS will complete water leakage detection for the watermains at Eglinton Avenue West between Avenue Road and Lascelles Blvd.
• This includes inspecting the watermains on the following roads/streets north and south of Eglinton (approx. 10m north and south):
– Lascelles Blvd, Eastbourne Ave, Oriole Pky, Highbourne Road, Avenue Road
• The testing will happen at 1-2 metre intervals using acoustical equipment.
• Electronic Ground Microphones and Acoustic Signal Level Meters will be visible to residents. These do not emit noise but there will be traffic control set up and PDO on site as the crews move along the required areas.
• Work is required for one night, tentatively planned for night of July 26 (10pm to 7am).
7
Additional Lands Negotiation
Additional land negotiation underway with Parks to accommodate dewatering system
• Installation:
– During installation (upcoming) and removal (end of construction term), an area will be fenced off to complete the work that is required to drill the wells
– No impact to existing trees or to the grassy area (tree protection will be installed)
– Pedestrian pathway will be open throughout the construction
• Operation:
– 24-30 months for running of the dewatering system
8
Support Works – Utilities Mitigation
What to expect: Sewer Lining
• Sewer lining is a process intended to increase the durability of the sewers.
• A section of the sewer system is cleaned and vacuumed and a CCTV inspection is completed. Then a liner is inserted into the sewer section from within the maintenance holes
• The process is designed to be generally non-disruptive and eliminates the need for excavation of the entire sewer section.
• Maintenance holes that will be accessed are located on Eglinton Avenue West between Braemar Avenue and Lascelles Boulevard.
• Lane closures will be required for this work. Pedestrian access will be maintained.
• Above ground pipes will be in place between maintenance holes to bypass pump around the sewer lines during the liner installation.
• Due to the nature of the work, an unpleasant chemical odour may be noticeable in the vicinity of the maintenance holes and, in some circumstances, in the home. It is not harmful, however it can be limited by covering floor drains while the sewers are being lined.
A public notice with additional details will be distributed prior to work beginning.
9
Support Works – Utilities Mitigation
What to expect: Sewer Lining
Sewer Lining Activity Examples
10
Avenue Station Concept: Aerial View
Main Entrance (accessible entrance)
Secondary Entrance
*60% rendering
N
11
Construction Progress Picture
Main Entrance
12
Construction Progress Picture
Secondary Entrance Welding Braces
13
Construction Progress Picture
Secondary Entrance
Chaplin Station Construction Update
July 2017
• Continue piling at the Tertiary Entrance
• Continue piling at the southwest side of the station box
• Extend the south pedestrian rerouting east to Russell Hill Road
Chaplin Station Construction Look Ahead
Year Quarter Construction ActivityApproximate
Duration
2017
Q2-Q3
(April-
September)
• Continue piling at the south side of the station box
• Secondary Entrance site setup
• Commence wet utilities relocation
• 6 months
• 2 weeks
• 4 months
Q4
(October-
December)
• Implement traffic staging on the north side of
Eglinton Ave W and commence piling on the north
side of the station box, shallow excavation and roof
slab construction
• 7.5 months
Chaplin Station: Updated Construction Stage 1
Began June 2017 until approximately October 2017
Chaplin Station Concept: Aerial View
Main Entrance
Secondary Entrance
*60% rendering
Tertiary Entrance
Chaplin Station Construction Progress
18
LOWERING REBAR CAGE
INTO PILE SHAFT
DRILL CROSSING
Chaplin Station Construction Progress
19
POWER WASHING
PILE INSTALLATION
SW STATION BOX
Chaplin Station Construction Progress
GUIDEWALL CONSTRUCTION
Chaplin Station Construction Progress
21May 2017
22
Local Area Map
Station(s) under construction
