Olivier Displacement Pile

When Venetian Harbour Developments Inc. set out to build a five-story condominium with underground parking in Sarnia, they knew they had challenges ahead.
The site's high water table, very soft soils, and small footprint made excavation and traditional deep foundations costly and complex. Their Construction partner Van Del Construction turned to EBS to see if Helical piles were a viable option to avoid large-scale excavation, shoring, and dewatering.
Due to the depth needed to achieve the bearing capacity, helicals were cost-prohibitive. EBS then proposed an alternative, the Olivier Displacement Pile. This system builds bearing capacity within the soft soils while avoiding creating extra spoils or the need for dewatering.

Site conditions included:
11 meters of:
Fill, Alluvial Silt and Sand with N values ranging between 5 to 10
High Water table
A Small Site footprint with both the harbor and structures nearby.

Olivier piles are installed with no spoils, by rotating and advancing the tooling, displacing and densifying the soil around it.
Once the tooling reaches the design depth a rebar cage reinforcement is dropped into place.
Concrete is pumped into the annular space inside the tooling.
The tooling is then retracted and rotated at the precise speed and rotation to form the Unique Helical shape of the Olivier Displacement Pile

EBS completed Load tests to confirm the pile design capacity,
The final design had 174 Olivier Displacement Piles
With 865kN in Compression and 475kN in Tension.