Manhole inspections are performed with 360-degree camera technology to provide a complete view of the sewer manhole in a matter of minutes. Using a 3D Optoscanner, two high resolution digital cameras with specially designed distortion-free wide-angle lenses are available for viewing. These optically scan the entire interior of the manhole in a few seconds with a single vertical run. The digitally transmitted image data can be viewed by the operator as if it were a live picture and the condition of the manhole is assessed back in the office or directly on site.

Unlike a video film from a conventional pan and rotating camera, which only shows the section of view saved at the time of filming, the viewer software provides an all-around inspection to assist with planning for sewer rehabilitation or maintenance. The inspector can stop at any position in the manhole, do a 360° pan or zoom, and take snapshots. Simultaneously, an unfolded view of the manhole can be generated. This gives a rapid overview of the condition of the manhole and enables the user to measure objects on the walls.

Duke's has the additional capability to perform this service for off-road and challenging locations. 

Once the field data is collected, Dukes NASSCO certified Team members perform defect coding and assemble the final NASSCO-compliant MACP Database.