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Elgin Mills PD7 Watermain Ontario

Elgin Mills PD7 Watermain Ontario

The Elgin Mills watermain project was part of York Region’s Long Term Water Supply Master Plan, and the Water and Wastewater Master Plan 2009.

The prime objective of the PD7 600mm ID CPP watermain was to reinforce the current watermain systems serving the towns of Richmond Hill and Markham. Considering the location, with a high density of residential and commercial buildings and in order to mitigate local traffic disruption, the Contract specified that the watermain be constructed utilising trenchless methods.

Ward & Burke were responsible for the construction of a microtunnel and the installation of the 600mm CPP watermain.

Innovation

Once the tunnel was completed, the 600mm ID CPP feedermain was installed using a Ward and Burke engineered technique known as “pipe flotation” in conjunction with shaft-based pipe installation frame. A specifically designed cellular grouting campaign, was then employed to grout the tunnel/ watermain annulus.

The designed and constructed tunnel alignment for the Elgin Mills PD7 watermain, resulted in the longest, curved microtunnel ever constructed in North America/Canada, and is a testament to the Engineering and Operational Skills of Ward & Burke.

Innovation

Once the tunnel was completed, the 600mm ID CPP feedermain was installed using a Ward and Burke engineered technique known as “pipe flotation” in conjunction with shaft-based pipe installation frame. A specifically designed cellular grouting campaign, was then employed to grout the tunnel/ watermain annulus.

The designed and constructed tunnel alignment for the Elgin Mills PD7 watermain, resulted in the longest, curved microtunnel ever constructed in North America/Canada, and is a testament to the Engineering and Operational Skills of Ward & Burke.

Challenges

The project site geology was primarily composed of stiff cohesive glacial tills, and saturated silts/sands. Acknowledging these challenging soil conditions, Ward & Burke proposed to construct the 740m long, 1500mm ID microtunnel using a Herrenknecht AVN1500 microtunnel boring machine (MTBM), from one specifically designed microtunnel drive shaft.

The long-distance microtunnel was constructed in one-pass and the primary tunnel liner, consisted of a 1500mm ID precast microtunnel pipe.
The resulting designed alignment consisted of three engineered horizontal curves with straight tangents in between each curves. In order to execute the curves, a state of the art, high precision VMT tunnel guidance system was installed in the MTBM. This system provided the MTBM operator will real-time information, with regard to the MTBM orientation.

Challenges

The project site geology was primarily composed of stiff cohesive glacial tills, and saturated silts/sands. Acknowledging these challenging soil conditions, Ward & Burke proposed to construct the 740m long, 1500mm ID microtunnel using a Herrenknecht AVN1500 microtunnel boring machine (MTBM), from one specifically designed microtunnel drive shaft.

The long-distance microtunnel was constructed in one-pass and the primary tunnel liner, consisted of a 1500mm ID precast microtunnel pipe.
The resulting designed alignment consisted of three engineered horizontal curves with straight tangents in between each curves. In order to execute the curves, a state of the art, high precision VMT tunnel guidance system was installed in the MTBM. This system provided the MTBM operator will real-time information, with regard to the MTBM orientation.

For general enquires
Email: info@wardandburke.com

Ireland (Head Office)

Ward & Burke Construction Limited,
Stradbally East, Kilcolgan, Co. Galway,
H91 W279

PH: +353 91 340 100
Email: info@wardandburke.com

Ireland (O&M Enquiries)

Ward & Burke,
Railway Road, Charleville, Co. Cork,
P56 HE19

PH: +353 63 33400
Email: info@wardandburke.com

UK

Ward & Burke Construction Limited,
25-26 Ivor Place,
London, United Kingdom, NW1 6HR

PH: +44 2045 871240
Email: info@wardandburke.com

Canada

Ward & Burke Microtunnelling Limited,
2410 Meadowpine Blvd,
Suite #101, Mississauga, ON L5N 6S2

PH: +1 905 821 3012
Email: canadainfo@wardandburke.com

USA

Ward & Burke Tunneling Inc
21 E State St, Suite 200
Columbus, OH 43215

PH: +1 216 954 0266
Email: usainfo@wardandburke.com

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Elgin Mills PD7 Watermain Ontario

Innovation

Innovation

Challenges

Challenges

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