Re: CAT5 embedded in screed - ok ?

[Jennings Robert <yahoogroups@xxxxxxxxxxx>]

Gareth,

Use some ducting if you can. I have put the same screed into my
house. All done in one day. The guys I had doing it where great but
they did not respect anything that was on the floor below them
(including underfloor heating pipes). They will stand on cables.
Rakes and shovels will pull at them. Even the pipe that the concrete
is piped into the house with is heavy and could easily catch/break
cables.

I have put 5mm steel mesh in the screed and it has cracked upstairs
in less than a year later. Downstairs hasn't cracked as much.
Movement will happen.

Do you have to put insulation down under the screed. This might be a
good place to slot cable. Any first fix piping/ducting went under/
through my insulation. I put 25mm insulation around all the outside
walls to break the cold bridge. This could also be a good place to
put some cables if you really don't want to use ducting.

Robert


On 5 Nov 2006, at 22:17, Gareth Cook wrote:

> The marble and the f-ball latex the last lot put down all has to
> come up.
>
> Theres a pack of 6 tiles in the garage never used - I can just lift
> them !
> They are only 500x500
>
> G.
>
>  Gareth Cook
>  IT Architect / Project Manager, SWG Sales
>  IBM SWG Sales - Lotus Park, Staines, TW18 3AG
>  Office: +44 (0)1784 445166 - Mobile: +44 (0)7980 445166
>  email: g@xxxxxxx
>
>
> ----- Forwarded by Gareth Cook/UK/IBM on 05/11/2006 22:12 -----
>
> Discussion
> Main Topic
>
> ukha_d@xxxxxxx
> Today 20:26
>
> .
> Subject:
> .
> Re: Fw: [ukha_d] CAT5 embedded in screed - ok ?
> .
> Category:
>
>
>
> So what's the floor finish? Presumably not bare screed!?
>
> If it's hardwood floor, I wouldn't worry about the air pockets. Any
> slight movement in the screed surface will be accommodated by the sub
> floor membrane.
>
> Other finishes need thinking about. I laid 2 x 32mm conduit in a 40 mm
> screed, finished with underlay and carpet. That was about 12 years ago
> and I haven't had a problem.
>
> ISTR your floor finish is marble tiles? Again, I don't think you would
> have any problem with burying a couple of conduits and tiling over the
> top. I would certainly do it if it were up to me . . . . . . . ..
>
> I don't envy you digging up the ground floor, with a new one there
> too.
> We had to dig up our slab when we moved in and that was enough hassle
> with just the two of us!!
>
> Good luck!
>
> Cheers
>
> Neil
>
> Gareth Cook wrote:
>>
>> I started all this In january - all planed up to a finish in july.
>>
>> Had some guys into lay the floor and level the floor (their
>> suggestion)
>> they cocked it up - dont want to know.
>>
>> So now Im having to clear the whole of the downstairs again (with
a
>> newborn baby - this should have been done before she was born) -
and
> they
>> will kango up the floor.
>>
>> Im then going to get in a company to stick a hose in the door and
>> pour
> in
>> a 30mm screed from a mixer truck. Not by hand.
>>
>> Whilst im at it i could bung some cables in - but anything that
has
> "air"
>> in it im thinking is a bad idea ! if not, i just wont do it.
>>
>> G.
>>
>> Gareth Cook
>> IT Architect / Project Manager, SWG Sales
>> IBM SWG Sales - Lotus Park, Staines, TW18 3AG
>> Office: +44 (0)1784 445166 - Mobile: +44 (0)7980 445166
>> email: g@xxxxxxx <mailto:g%40uk.ibm.com>
>>
>> ----- Forwarded by Gareth Cook/UK/IBM on 05/11/2006 16:54 -----
>>
>> Discussion
>> Main Topic
>>
>> ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>
>> Today 14:23
>>
>> .
>> Subject:
>> .
>> Re: Fw: [ukha_d] CAT5 embedded in screed - ok ?
>> .
>> Category:
>>
>> Gareth
>>
>> What's the floor finish?
>>
>> I can see your problem because a 20mm conduit will only leave 8 -
>> 10mm
>> of screed over the top of it. However, if the floor finish is
>> suitable,
>> it probably wouldn't matter too much.
>>
>> What about going over the top and boxing the cables in a
"riser"
>> somewhere?
>>
>> Regards
>>
>> Neil
>>
>> Gareth Cook wrote:
>>>
>>> I'd like to get as much of the screed down as poss, and not
have
> conduit
>>> with "air pockets" essentially
>>>
>>> The base underneath is the normal concrete floor - this is a
30mm
> screed
>>> on top.
>>>
>>> G.
>>>
>>> Gareth Cook
>>> IT Architect / Project Manager, SWG Sales
>>> IBM SWG Sales - Lotus Park, Staines, TW18 3AG
>>> Office: +44 (0)1784 445166 - Mobile: +44 (0)7980 445166
>>> email: g@xxxxxxx <mailto:g%40uk.ibm.com> <mailto:g%40uk.ibm.com>
>>>
>>> ----- Forwarded by Gareth Cook/UK/IBM on 05/11/2006 09:04
-----
>>>
>>> Discussion
>>> Main Topic
>>>
>>> ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>
>> <mailto:ukha_d%40yahoogroups.com>
>>> Yesterday 22:54
>>>
>>> .
>>> Subject:
>>> .
>>> Re: [ukha_d] CAT5 embedded in screed - ok ?
>>> .
>>> Category:
>>>
>>> Yes Gareth
>>>
>>> Any movement in the floor at all (at slab joints etc) would
break
>>> the
>>> conductors.
>>>
>>> Why not run them in a length of PVC conduit? - or are we
talking
>>> about
>>> 10's of runs?
>>>
>>> Besides, it not good practice - I'd hate to do a job thinking
that
> when
>>> somebody looks at it a few years later, they start muttering
about
>>> cowboys etc!!!
>>>
>>> Cheers
>>>
>>> Neil
>>>
>>> Gareth Cook wrote:
>>>>
>>>> If I were to lay out a bunch of cat5 cable on a concrete
floor,
>>>> then
>> had
>>>> 30mm of screed laid down embedding the cat5 - anything
wrong with
> that
>>> ??
>>>>
>>>
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