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Rocking slab

Common Defects & Damage Types
Rocking slab A rocking slab is a concrete slab that moves or rocks when weight is applied because it no longer has uniform support underneath. The movement indicates instability beneath the pavement.

Rocking slabs often develop when erosion, settlement, or voids form beneath the concrete, leaving portions of the slab unsupported. Repeated movement can worsen cracking and create unsafe walking conditions. Effective repairs generally involve restoring proper support before reinstalling or replacing the slab.

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