| Characteristic | Stage I | Stage II | Stage III | Stage IV |
|---|---|---|---|---|
| - | - | - | - | - |
| - | - | - | - | - |
| - | - | - | - | - |
| - | - | - | - | - |
| - | - | - | - | - |
| - | - | - | - | - |
| - | - | - | - | - |
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Source
Release date
August 2025
Region
Japan
Survey time period
March 2025
Special properties
classification after close visual inspection into stages*
Supplementary notes
*Stage I: Good. No structural deficiency.
Stage II: Preventive maintenance. Preventive maintenance is desirable, although no structural deficiency is found.
Stage III: Early rehabilitation. The structure needs early rehabilitation, or it can become deficient.
Stage IV: Emergency rehabilitation. The structure needs emergency rehabilitation because it is deficient or it will most likely become deficient.
Percentages may not total 100 due to rounding by the source.
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