| Generic cause | Knowledge-based error | Skill-based error | Rule-based error |
| Project planning | • | ||
| Site investigation | • | ||
| Design errors | • | ||
| Construction errors | • | • | |
| Material deficiencies | • | ||
| Operational errors | • |
| Generic cause | Knowledge-based error | Skill-based error | Rule-based error |
| Project planning | • | ||
| Site investigation | • | ||
| Design errors | • | ||
| Construction errors | • | • | |
| Material deficiencies | • | ||
| Operational errors | • |
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