Table 2 Determination of damage level (AIJ 2010; JBDPA 2001).
Damage level | Maximum residual crack width | Concrete stress | Steel stress | Member strength |
|---|---|---|---|---|
I (slight) | 0–0.2 mm | |||
II (light) | 0.2–1 mm | Concrete cover > 2/3 fc′ | Yielding | |
III (moderate) | 1–2 mm | Concrete cover > fc′ | ||
IV (severe) | > 2 mm | Concrete core Maximum strength | Maximum Strength of the member | |
V (collapse) | The member is unable to resist axial load or its capacity is less than 80% |