Research Article
An Approach to Pipe Image Interpretation Based Condition Assessment for Automatic Pipe Inspection
Table 1
Example sewer grading scheme.
| Structural grade | Interpretation |
| 1 | Acceptable structural condition | 2 | Minimal collapse risk in short term but potential for further deterioration | 3 | Collapse unlikely in the near future but further deterioration likely | 4 | Collapse likely in the foreseeable future | 5 | Collapsed or collapse imminent |
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