St Gregs College
Client: TRN GROUP
Location: ST GREG’S COLLEGE, GREGORY HILLS
Year: 2023
Capabilities:
- Sandstone Block Retaining Walls
- Erosion Control
Collective Civil NSW addressed a critical infrastructure challenge at St Greg’s College’s entrance wall.
Scope:
Design and construction of a mass gravity sandstone block retaining wall, engineered to remediate a landslip and mitigate grade issues on the batter above.
In this project, we were committed to delivering a sustainable solution that addressed concurrent objectives of safety, functionality, and aesthetics.

