Introduction
The client’s parking lot was hemmed in by two concrete walls that had slowly tilted inward over the years. Beyond the lost usable space, the lean was becoming a real safety concern: a wall that’s already leaning has a habit of choosing the worst possible moment to come down. The brief was simple, take back the space, fix the slopes, and make sure whatever replaced those walls would actually stay put.
1. Demolition & Entrance Excavation
We started by demolishing the two existing concrete walls and excavating the entrance to open up the footprint. Removing the failed walls let us reset the surrounding grades and restore proper outward slopes, so water now sheds away from the parking area instead of pooling against retaining structures.
2. Installing Concrete Retention Blocks on Three Sides
Once the area was reshaped, large concrete blocks were installed on three sides to retain and stabilize the surrounding ground around the new, wider parking lot. Block walls of this type are quick to assemble, easy to inspect, and engineered to handle the lateral loads that defeated the original poured walls.
Conclusion
The result is a wider, safer parking lot with retaining walls that are built for the loads they actually carry, and slopes that direct water where it should go. By treating the demolition, regrading and new retention as a single sequence, A. Préfontaine & Associés delivered a finished space the client can use with confidence.
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