Our 40MPa concrete sleepers are the standard residential specification for Gold Coast retaining walls in stable, well-drained ground conditions. Every sleeper in this range is manufactured to AS 4678-2002 Earth Retaining Structures requirements.
40MPa is the correct specification for Gold Coast retaining walls where the wall is under 1.0m in stable, well-drained sandy or loam soils, and the project does not require engineer certification under QBCC building approval requirements. For walls on reactive clay soils or over 1.0m, see our 50MPa Concrete Sleepers — Gold Coast QLD.
In Queensland, retaining walls over 1.0m require a building development approval and structural engineer's certification under QBCC regulations. Always check with Gold Coast City Council before commencing work. See our full Retaining Wall Regulations — State-by-State Guide.
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