What we surveyed
A CCTV inspection at a residential property in Telford (TF2), covering 2 separate runs of pipework, 100 mm bore, foul.
The system is vitrified clay.
Vitrified clay is what most pre-1970s drainage in the Midlands is built from. It is durable but brittle, and its short pipe lengths mean many joints, which is where almost everything goes wrong.
What the camera found
2 defects were logged and coded.
The worst section graded A on the Drain Repair Book scale.
Cracking and fracturing (2 observations)
A crack is the stage before a fracture, and a fracture is the stage before a collapse. Catching one on camera is the difference between a patch liner and an excavation.
| Distance | Code | Observation |
|---|---|---|
| 3.90 m | CR | Crack, radiates from 08 |
| 5.90 m | CR | Crack, radiates from |
_Distances are measured from the start of the run in which each observation was recorded, not from a single point._
Outcome
CCTV drain surveys in Telford · Blocked drains in Telford
More case studies: Telford: displaced and open joints · Walsall: a clean system · Welshpool: displaced and open joints
Talk to the person who will do the work.
Surveys across the West Midlands, south Staffordshire, east Shropshire and north Worcestershire. Unblocking closer to home.