Foundation failures occur when the base of a structure, such as a building or bridge, becomes unstable or compromised. This can happen due to various reasons, including soil erosion, poor construction practices, or excessive moisture. When a foundation fails, it can lead to serious structural issues, such as cracks in walls or uneven floors. Common signs of foundation failure include visible cracks in the foundation itself, doors and windows that stick, and gaps between walls and ceilings. Addressing these issues promptly is crucial to prevent further damage and ensure the safety of the structure. Regular inspections can help identify potential problems early on.