| Categories | Symbols | Description |
| Equilibrium | EQU | Loss of equilibrium of the structure or the ground. |
| Strength | STR | Excessive deformation or internal failure of the structure or structural elements, including piles, footings, walls, basement, etc. |
| Geotechnical | GEO | Failure or excessive deformation of the ground. |
| Uplift | UPL | Loss of equilibrium of the structure or the ground due to uplift by water pressure or other vertical actions. |
| Hydraulic heave | HYD | Failure by internal erosion and piping in the ground caused by hydraulic gradients. |