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CABLES IN PROTECTED ESCAPE ROUTES

John Peckham

Thinking about the the thread on metering for flats.

The DPC for Amendment 2 in 422.2 only allows cables supplying safety services, lighting and sockets for cleaning to be installed in a protected escape route.

I am thinking that it is usual for supplies to flats, in blocks of flats, to be run from a riser cupboard down the corridors and enter each flat above a demountable ceiling. 

So post AMD 2 how would the supplies to flats from a riser be practically installed. There is only minimal clearance from the demountable ceiling to the soffit , it would be difficult to enclose the cables in  Durasteel fire cladding. Lowering the ceiling is not a usual option.

Answers on a post card to ………………………..

JP

 

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  • 0

    Hmm, an interesting spot.

    Assuming  they mean the same definition as part B, (fire)  then the definition will catch a lot of situations where a sub main is not an unreasonable thing to be routed - like on the wall with the front door of the flat in it..

    A protected corridor/lobby is, 'A corridor or lobby that is adequately protected from fire in adjoining areas by fire resisting construction.'

    At this point one wonders about very large dia. conduit, or metal trunking, or if it would be better if the authors of the regs stuck to wiring, and asked the folk who write the ADs part B to consider this sort of thing.

    Mike.

     

     

     

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  • 0

    Hmm, an interesting spot.

    Assuming  they mean the same definition as part B, (fire)  then the definition will catch a lot of situations where a sub main is not an unreasonable thing to be routed - like on the wall with the front door of the flat in it..

    A protected corridor/lobby is, 'A corridor or lobby that is adequately protected from fire in adjoining areas by fire resisting construction.'

    At this point one wonders about very large dia. conduit, or metal trunking, or if it would be better if the authors of the regs stuck to wiring, and asked the folk who write the ADs part B to consider this sort of thing.

    Mike.

     

     

     

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