City Centre/Young Condominiums | 17, 25 & 6 fl | U/C

[megabytephreak]

Not usually around here from what I've seen. The piles are typically just for installing wooden shoring so they can excavate without it caving in. The foundation itself is has been a raft-type design in most of the buildings I've seen in the area. Basically just a thick (1m+) reinforced concrete slab, which distributes the loads from the building. My understanding is that the bedrock is too deep here for that type of pile to be cost effective. I know friction piles are also a thing, not sure if the soil here is unsuitable as well.

Edit to add: Often the basement walls are eventually poured up against the pile wall/shoring, after putting waterproofing in between. The piles/shoring are left in the ground to rust/rot over time as far as I can tell.