Wynnum Breakwater Park Beachfront with InterAx
Wynnum QLD, Australia
Tensar® InterAx® supporting a beachfront concrete slab
Constructed in May 2025.
Benefits
- Achieved 50kPa bearing capacity on sandy subbase
- Mitigated settlement for beachfront concrete slab
- Enhanced structural stability for coastal conditions
- Efficient installation with dual-layer geogrid system
Client Challenges
Brisbane City Council required a beachfront concrete slab constructed over a sandy base that could achieve 50kPa bearing capacity whilst containing any settlement. The coastal location and sandy subbase presented significant structural challenges for the concrete slab installation.
Tensar Solution
Tensar proposed a mechanically stabilised layer incorporating two layers of Tensar InterAx geogrids in the well graded granular subbase material. This dual-layer configuration provided the necessary stabilisation to achieve the required bearing capacity and effectively mitigate differential settlement, improving long-term stability of the beachfront concrete slab structure.
