CCTV Pipe Inspection

Summary

LandScope were approached to undertake survey works at the location of an exposed sewer pipe crossing a stream. Flow meters at the site indicated that the pipe was backing up and causing overspill occurrences. Survey works were to investigate the access chambers, pipe levels and assess the interior of the pipe for any defects.

An integrated survey approach

Levels taken at the inspection chambers indicated that there is an expected, if slight, gradient between the chambers on opposing sides of the stream crossing as it flows from west to east.

This suggests that any backing up problems may be connected to the pipe crossing itself. By creating a section through the point cloud over the pipe we can see a clear bowing upwards at the centre suggesting that some subsidence has occurred either at one side of the crossing or at the supports in the stream.

In order to assess the internal condition of the 225mm pipe a CCTV crawler system was used. The advantage of this was that the camera head could be raised above the level of the internal flow and pivoted to focus in on any defects noted during survey. A traditional push rod system would struggle to have produced useful data as it would generally have been submerged.

Accurate data accelerates project decision making

The benefits of a multi-sensor approach include; single site visit, reduced program time, reduced overall costs and holistic investigation, to name a few.  By using LandScope’s expertise and technology, the survey was able to provide the clients the data they needed to progress the project without delay.

Contact us if your project requires quality data!