INNOVATION May-June 2019

2O18 ♦ 2O19 PROJECT HIGHLIGHTS

NANISIVIK NAVAL FACILITY The Nanisivik Naval Facility supports the Government of Canada’s goal of enhancing naval presence in Canadian arctic waters. The facility will function as a refueling port and logistics hub to support the Canadian Navy and other Government of Canada vessels in the Arctic. Project infrastructure includes two large fuel storage tanks and containment, generators and power distribution, pipeline systems, accommodations, a warehouse, an aircraft landing area, road upgrades and laydown areas, and a major refurbishment/upgrade to the existing wharf structure. The project is in its fifth year of construction. Commissioning and first-fills are scheduled for 2019. Participants: Harald Kullmann, P.Eng., Andre Dratwa, EIT, Ebrahim Manesh, P.Eng., Jason Braun, P.Eng., Rodney Watson, P.Eng., Louis Lemay, P.Eng.

HUDSON BAY RAILWAY The Hudson Bay Railway that connects the town of Gillam to the community of Churchill in Northern Manitoba was damaged by extreme flooding events in the spring of 2017. The railway line crosses many stretches of permafrost over a length of about 300 kilometres. Stratum Logics designed the railway sub-structure in the washed-out sections, using Tough Cell® technology. Tough Cell® provides confinement and also improves the modulus of the reinforced soil that minimizes the negative impact on underlying permafrost and protects the structure from the erosive forces above the ground surface from future flood events. This is a huge advantage compared to other repair scenarios that were available. Also, reinforcing the railway sub-structure with Tough Cell® reinforcement enabled the use of lower quality, more conveniently available material which meant fewer logistic issues for the project. Participating engineers: Sanat Pokharel, P.Eng., Meisam Norouzi, P.Eng., Chris French, P.Eng. (APEGA), and Murtaza Ali, P.Eng. (APEGA)

NEPTUNE BULK TERMINALS ALLISON PROJECT In 2017, Teck Resources Ltd. retained Stantec for a preliminary concept, detailed design, and construction services for a new overpass that will connect the existing Neptune Overpass at the Neptune Terminals in North Vancouver, BC, directly to the coal pits. A final roadway alignment on compound curves was chosen to reduce the structure footprint and impact on tightly constrained facilities, and provide relatively good constructability and shallower structural depth for maintaining clearance over the CP rail tracks.

The bridge has two spans that total about 65.5 metres along the roadway control line, with an approximately 230-metre long mechanical stabilized earth wall approach ramp. The main span comprises three 55.5-metre composite steel trapezoidal curved box girders of radius 85.5-metre at the innermost girder. The construction of the bridge uses an innovative method of pre-assembling the steel box girders on the ground prior to lifting by self-propelled motorized truck to transport the bridge to its final position.

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