A sewer inspection report can describe a defect by its clock position around the pipe wall. If the view is oriented upright, twelve o’clock is the crown and six o’clock is the bottom. The number around the clock describes where the defect sits in the cross section, while the distance reading describes where it sits along the line.
Check how the picture was oriented
Ask whether the camera was self-leveling and whether the image rotated at a bend. A report can be more useful when the technician labels the viewing direction and saves a clip showing the defect before and after the camera passes it.
Use both references to compare findings
Keep the clock position, distance, direction and clip together. When another contractor reviews the report, ask them to identify the same spot before pricing the repair. The clock position alone does not establish how deep the pipe is or where to excavate.
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