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Topic Title: Shower area
Topic Summary: Zones
Created On: 18 March 2013 06:35 AM
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 18 March 2013 06:35 AM
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ebee

Posts: 5619
Joined: 02 December 2004

Reading thru section 701 got me thinking.

If a fixed bath or a shower basin exists then zones are definable OK.

If a shower basin does not exist say in a "wet room" situation then the zone is dependant upon the fixed shower head.

In earlier regs there was a mention that if the spray was detachable the zones were extended.

Does not appear now.

If a disabled shower although having a basin, has an area suitably floored like a wet room where it is obvious that a carer would be assisting the showerer and the spray is on a fixed bracket that is easly demountable for hand use which could easily be outside the basin area . surely we should extend the zones at least 0.6m from the spray at its furthest extended point? or even, dare I suggest 1.2m beyond?

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Ebee (M I S P N)

Knotted cables cause Lumpy Lektrik
 18 March 2013 06:52 AM
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normcall

Posts: 8062
Joined: 15 January 2005

I'm afraid I'm one of the few who don't take the regs as gospel.Anything within reasonable spraying distance should be suitable for purpose.
Our shower has a extra long hose for disabled use and although it has doors, I consider the 'safe' zone to be beyond the 'book' distance.
This is called 'design' rather than slavishly following the 'guidance'.

Anyway, what are you doing reading BS7671?

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Norman
 18 March 2013 08:03 AM
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ebee

Posts: 5619
Joined: 02 December 2004

Wisdom as usual from you Norman.

I was particularly thinking about a room containing such a shower and the existing light fitting being sufficiently either above the 2.25m (7` 4.5" in real terms) height or far enough away to be a a little bit lower

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Ebee (M I S P N)

Knotted cables cause Lumpy Lektrik
 18 March 2013 10:51 AM
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Legh

Posts: 3435
Joined: 17 December 2004

Yes, I remember it being dropped and thinking that a detachable shower head should still be a factor in deciding the zones.

Lights on the other hand... I f you point the shower head straight up then you will spray the fitting. This is quite a common occurrance and I expect taken care of when purchasing an IP rated light fitting suitable for it environment...

Legh

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 19 March 2013 07:18 AM
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ebee

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Reason I asked is because of a situation I saw when fitting an alarm system.

disabled shower with a basin and low screens.
This would dictate zone one inside screen area and zone 2 0.6m out of it

However the area around it floored like a wet room.
Very neat job.
I struck me that the intention might well be for a carer to stand on the floored area whilst assisting the bather so the basin should be ignored and the zone 2 effectively now becomes zone 1.
This would be dictated by the position of the fixed shower spray.
But it is detachable and could be handheld by the carer.
I would say that common sense should lead us to decide the most erroneous possible postion of the shower spray should dictate the zones.
It`s a dining room with a three lamp "chandelier" on a chain less than 2.25 metres high but within our newly decided zone.
If we stick to the basin defining the zones then this light fitting is outside the zones anyway.
There`s about ten links in the fitting, reducing it to three links solves the problem.
I can`t see it ever being an issue but am thinking of advising them to limit to three links (lamps and lampholders are not the nearest anyway just the stems).

The company that did the work made a neat job .
They RCDd a couple of sockets three and four metres away.
Unfortunately it`s open plan (ie dining room and lounge has no dividing wall just an open staircase) so , pedantically, the lounge sockets should be RCDd too by reason of being in "the location" (one room not two) but it is not easy to see any real practical difference this causes as these sockets are more than 6 metres away anyway.

-------------------------
Regards,
Ebee (M I S P N)

Knotted cables cause Lumpy Lektrik
 19 March 2013 07:30 AM
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aligarjon

Posts: 2729
Joined: 09 September 2005

would this not be covered by being suitable for the envirement that it is installed ? The ' zone' doesn't really matter. Its more about a safe design with zones being one of the tools.

Gary

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 19 March 2013 09:42 AM
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Angram

Posts: 548
Joined: 23 March 2009

Another example not described in the regs:

Shower head and drain right in the centre of the bathroom with bath, WC and hand basin round the periphery. Floor tiled sloping to the central drain.

Presumably the whole room is zone 0
 19 March 2013 10:43 AM
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AJJewsbury

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Joined: 13 August 2003

Another example not described in the regs:

Shower head and drain right in the centre of the bathroom with bath, WC and hand basin round the periphery. Floor tiled sloping to the central drain.


Seems to be described - 701.32.3 (ii) b) explicitly mentions ceiling mounted shower heads/fixed outlets.

Presumably the whole room is zone 0


Doesn't it depend on how big the room is? If there's no shower basin, then zone 0 is 1.2m radius (and 100mm high) so if the room is >2.4m wide/long then the zones won't meet the walls. The corners might be outside zones if the room was bigger than 1.7m x 1.7m.
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