What is cable troughing?
At a glance
The concrete or composite channel units (with lids) laid along the lineside that the cables sit in. Sizes are named C/1/x, e.g. C/1/8, C/1/29, C/1/43.
Why: It protects the cables and keeps the route tidy and findable. The size sets how many cables fit, and lid security matters where theft or vandalism is a risk.
Where: Along most surface cable routes. Damaged or buried troughing is assessed in the survey; new troughing has to meet the product spec, with reduced-weight types preferred.
Where the rules are
- NR/L2/TEL/00013 cl 5material families and the standard C/1/x trough sizes
- NR/L2/TEL/00013 cl 8.4reduced-weight concrete troughing preferred
- NR/L2/TEL/00013 cl 8.15lockable lids for high-vandal areas
- NR/GN/TEL/30140 cl 4.4.2laying troughing lids — stagger
- NR/GN/TEL/30139 cl 6.3assessing damaged troughing and when it is replaced
- NR/GN/TEL/30139 cl 6.39troughing lid defects to record
What to order
- C/1/29 trough unit · Anderton Concrete · C/1/29TRW
- C/1/29 / C/1/43 trough lid · Anderton Concrete · C/1/29LRW
- C/1/43 trough unit · Anderton Concrete · C/1/43TRW
- C/1/8 straight trough unit · Anderton Concrete · C/1/8TRW
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On the drawing
The route type (troughing, buried, duct) and changes of route are shown along the SLD.
- NR/GN/TEL/30139 cl 6.5buried troughing route — what to record
Also called: trough, C/1 trough, concrete troughing, GRC troughing
Guidance in our words. Read the current issue of each standard before you design to it.