Project category

Maritime and Municipal

Location

Montreal, Quebec

Customer

Administration Portuaire de Montréal

Year

2021-2022

Additional informations

Consolidate the existing scour protection structures at the foot of the caissons with a view to future deepening of the seabed at an elevation -11,700m from the chart datum for quays 50-51-52.

Main work carried out

• Excavation of the seabed at -11,700m Z.d.C. on a strip 2m wide in relation to the face of the anti-scour structures of the sectors indicated on the plans;
• Excavation of the seabed for the placement of rockfill berms;
• Excavation for the preparation of the foundation of the consolidation structures;
• Partial demolition of low wall;
• Demolition of the wall + slab structure;
• Demolition of concrete slabs 1 to 6 on the seabed;
• Removal of cement / sand bags;
• Bush hammering of concrete structures to be consolidated;
• Installation of anchors, reinforcements, formwork and concrete;
• Installation of riprap berms at the foot of the existing sheet piles;
• Installation of an anchoring system at the head of the sheet piles.

Special methods and technical features

• Diving work