Metro has a variety of experiences working around a marine environment and the unique challenges that come with that, including containment concerns, remote access, and sensitive environments.
Each project has been a unique challenge, deserving of a unique approach to solving the dilemma.
FERRY TERMINAL - PIER CAP REPAIR
This Ferry Terminal required the repair of a concrete pier cap that supports the terminal dock. Scheduling repairs in between the arrival of ferries as the terminal was in full operation proved to be a challenge the crew had to contend with. Applying shotcrete to minimize down time was one of the ways the crew was able to work with the difficult schedule requirements.
The value was between 50,000 and 100,000 dollars.
FERRY TERMINAL - DOLPHIN REPAIR
This ocean repair of a docking dolphin was complicated by having to work around the tides that covered the repair area. We used a large barge to bring our concrete repair equipment and shotcrete pump to the site. Shotcrete was used after the old concrete was chipped away, and the substrate was prepared.
PERALTA REPAIR - CONCRETE HULK
Powell River is home to ten concrete ships, dating back to WW1. They are currently chained together to act as a breakwater to protect the log storage pond inside. All of the ships have a unique story of glorious days gone by, either as cargo or transport vessels during the wars. The Peralta is the largest in the group, dating back to 1921 and weighing in at 3,696 tons.
The storms in the area cause damage to these Hulks, so they require regular repair, maintenance, and repositioning once a year. The ships are held in place with 16-ton concrete anchors (between 8 and 10).
The repair of the Peralta came with a number of difficulties to overcome, including protection of the marine environment, and the limited workspace of the local barge which was our work platform. The work included preparing the surface and shotcrete application.
ESQUIMALT GRAVING DOCK
We were required to make repairs to the walls and slabs of the graving dock. Shotcrete was used to minimize time-loss due to forming and maximize reinstatement of the dock into uninterrupted operation after the repair. As the graving dock was in full operation, this repair was timed carefully so as to minimize any negative impact on the dock's schedule.
BALLENAS ISLAND LIGHTHOUSE
Ballenas Island is located in the inside passage between Vancouver Island and the mainland. It was a relatively remote job site, which added some complications with regard to transporting crews, material, and equipment. The work included removing degraded concrete, preparing the substrate, and patching back with good quality repair concrete.