What often causes cracks, settlement, and structural failure of a slab?

Cracks, settlement, and structural failure of a slab are primarily associated with poorly prepared and compacted subgrade. The subgrade serves as the foundation for the slab, and if it is not properly compacted, it can lead to uneven settling over time. This uneven settling exerts stress on the slab, resulting in cracks and potential structural failure.

When the subgrade is inadequately prepared, it may contain voids or loose soil that cannot adequately support the weight of the concrete. As the weight of the slab is applied, areas of the shoddy subgrade may compress or shift, creating instability. In particular, the support must be uniform and stable across the entire area where the slab is poured; any weakness can lead to significant problems.

While options like poor drainage, overwatering, and an improper concrete mix can contribute to issues with concrete slabs, they do not typically cause the foundational problems associated with slab installation. Poor drainage can lead to water accumulating underneath the slab, but this is more of a secondary issue that arises from a compromised subgrade rather than a direct cause of structural failure. Similarly, overwatering relates to curing but does not directly lead to subgrade instability. An improper concrete mix can affect the durability and surface integrity of the