cables in cavity dwarf wall unisnulated!

[topquark]

i cant find a reg that states a cable cannot be run in a cavity, its just undesirable. the reason they dont like it is because it wont be supported and may be damaged when pulling cables in, if you use the method i've said it eliminates both of those problems. i cant see how it would not comply.

also bridging is eliminated

It's not a BS7671 regulation, it's building regs.

 

[Thomas123]

It's not a BS7671 regulation, it's building regs.

Does it state in the building regs that it cannot be run in cavity? I havent got a building regs book, haha

 

[rob121]

Nicked off another forum:
Building Regulations
Building Regulations 2000, Approved Document C, 2004 Edition, Section 5: Walls, paragraph 5.13 b Cavity external walls, requires, amongst other things, that a cavity external wall is at least 50 mm wide, and the cavity is to be bridged only by wall ties or by cavity trays provided to prevent moisture being carried to the inner leaf.
A cavity is intended to provide a gap to prevent water penetration. Cables could bridge this protection if they touch both the inner and outer leaves of a cavity wall. Furthermore, the cables could provide a route for water to drain directly into accessories, with potentially dangerous results.

 

[Thomas123]

Nicked off another forum:
Building Regulations
Building Regulations 2000, Approved Document C, 2004 Edition, Section 5: Walls, paragraph 5.13 b Cavity external walls, requires, amongst other things, that a cavity external wall is at least 50 mm wide, and the cavity is to be bridged only by wall ties or by cavity trays provided to prevent moisture being carried to the inner leaf.
A cavity is intended to provide a gap to prevent water penetration. Cables could bridge this protection if they touch both the inner and outer leaves of a cavity wall. Furthermore, the cables could provide a route for water to drain directly into accessories, with potentially dangerous results.

Cables "could" if installed incorrectly, but if installed like i have stated bridging cannot occur....

 

[Engineer54]

Cables "could" if installed incorrectly, but if installed like i have stated bridging cannot occur....

That must have been wriien by numbties that have spent their working lives sat at a desk, making-up crap like this!!!

 

[Thomas123]

That must have been wriien by numbties that have spent their working lives sat at a desk, making-up crap like this!!!

haha your probably right mate

 

[Kiers1970]

Engineer 54, how true . real world and Reg world have to meet somewhere in the middle, we all know the likelihood of water ingressing through a cable bridging the gap is exrtemely unlikely.
These rules and regs we have to live by, some are laughable, my forend acroos the road couldnt build his extension without stepping it back 1 brick, this apparently prevents a 'terracing affect' so he has a 2 storey extension, built one brick back, lots of extra cost and loss of space. guess what, you cannot see that its set back at all, so what has it achieved? made work for some planners and architects...and builders of course....and I didnt get the wiring job, 'we do it ourselves and our mate part p's it...... good grief.