Cable run through void in RSJ..

[GaryMo]

So, considering t&e has mechanical protection in the form of it's exterior sheath and there's no sharp edges on the RSJ it enters and runs along side of; having seen this during a PIR, would you code it and what regulation would it contravene?

BTW, I'm not condoning the idea of good practice. I wouldn't dream of not inserting grommets into a backbox even though they're not required under BS7671 if there's a lack of sharp edges.

Hope you and your family also have a Merry Christmas

 

[ColJack]

lack of support or fixings? ( how do you clip to a steel I beam? )

 

[GaryMo]

lack of support or fixings? ( how do you clip to a steel I beam? )

It might be running horizontally. I agree, you can't fix the cable but then again you wouldn't rip all the boards up on the first floor of a house to fix every last clip to nearby joists.

 

[plugwash]

you could use self adhesive fixings....

 

[conny]

having seen this during a PIR, would you code it and what regulation would it contravene?

Not being an electrician I am not qualified to carry out a PIR so am unable to answer your question, I'll leave that to the experts.

how do you clip to a steel I beam?

There are clips you can purchase just for this type of situation.

www.cablecraft.co.uk/ProductGrp/00040028 -

(Hope you've finished that painting! )

 

[GaryMo]

You can also use girder clips but neither would be any good if the RSJ is already enclosed.

 

[Lectrician]

I assume this is a standard I beam, boxed in. You would not need to drill the beam to run a cable, you would just run it with the beam, in the boxing.

Box beams are used in construction, but I beams are far more common in dwellings which are predominantly brick and block.

I would never drill a beam without express permission of a structural engineer either - 99% of the time you would find an alternative route anyway.

 

[fattony]

how about something like this, use metal ties every meter its not going anywhere

http://www.tlc-direct.co.uk/Products/GCBC500.html

 

[ban-all-sheds]

I would never drill a beam without express permission of a structural engineer either.

"Drill"?

Nah - just use an old bacon roll.