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High-Load, Flood-Resilient Keystone & TW3 Wall at Proximity Botany Bay
Earth Retaining Structures
Discipline
Goodman Group
CUSTOMER
Banksmeadow, NSW
Location
Challenge
Deliver over 300 m of earth-retaining walls within a floodplain-constrained industrial redevelopment, balancing strict DA flood elevation requirements with tight boundary offsets, underground culverts, and heavy pavement loadings — all while aligning with a fast-paced construction program.
Solution
Konceptual designed modular Keystone block walls with geogrid reinforcement and No-Fines-Concrete across four facades of the logistics estate. The walls accommodated complex earthworks, hydrostatic uplift, Higher than usual loads, and 100-year flood constraints. Staged construction enabled early drainage and slab works without delaying the flood infrastructure.
Key Highlights
1100m2 of segmental retaining wall blocks, up to 3.2 m high.
80% grid coverage via positive-connection blocks, despite enormous loading requirements reducing cost by 15%
less than 20 mm settlement over soft marine clays by incorporating ground improvement techniques
Utilizing both Positive and Frictional connection types as well as NFC walls
Visual Gallery
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