A character can spot dangerous weaknesses in structures if he/she makes a dice roll using his/her Engineering (including relevant specialisms) + PE.
The difficulty value depends on how obvious the structural weaknesses are, which depends on how well the building was designed and built, as follows:
| Design | Construction -> | Abysmally built | Poorly built | Competently built | Well built | Excellently built |
| Abysmally designed | 2 | 3 | 4 | 5 | 6 | |
| Poorly designed | 3 | 4 | 5 | 6 | 7 | |
| Competently designed | 4 | 5 | 6 | 7 | 8 | |
| Well designed | 5 | 6 | 7 | 8 | 9 | |
| Excellently designed | 6 | 7 | 8 | 9 | 10 | |
If the character fails the dice roll, he/she will believe that the building is structurally sound (whether or not it is). If the character succeeds in the dice roll, he/she will spot any major design or construction failings in the building.