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Advice on trench depth for SWA - Answered!

MikeD

I'm planning to build a timber garden room for use as an amateur radio shack. It will have a TT mains supply from the house consumer unit. I can't attach the SWA to a fence as the boundary belongs to the neighbour so it will have to go underground.

The trench will be about 5 metres long under a gravel walkway and will cross a sewer pipe that is 600mm below the surface with an inspection cover nearby. How deep does the trench need to be?

Mike

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    Grumpy: 
     

    Well, if you're going to slab over it I can't see why you couldn't just lay the scaffold tube pretty much on the surface. Wrap it in pretty yellow warning plastic so it's obvious what it is. 

    Otherwise I would suggest that it needs to be buried below the depth of the first scoop of a digger which is unlikely to be more than 300mm with your warning tape at 150mm.

    Perfect, thank you!

    Mike

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  • 0

    Grumpy: 
     

    Well, if you're going to slab over it I can't see why you couldn't just lay the scaffold tube pretty much on the surface. Wrap it in pretty yellow warning plastic so it's obvious what it is. 

    Otherwise I would suggest that it needs to be buried below the depth of the first scoop of a digger which is unlikely to be more than 300mm with your warning tape at 150mm.

    Perfect, thank you!

    Mike

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