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Topic Title: BS5266 EmergLt
Topic Summary: Dimensions of Exit signs
Created On: 13 June 2018 04:26 PM
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 13 June 2018 04:26 PM
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MrP

Posts: 962
Joined: 24 March 2006

BS5266 EmergLt
Been out of the uk loop for a little while
Dimensions of Exit signs
Doing a small office lighting refurb I would estimate existing fittings about ten years oldish
Changing 600x600 mods for LED type mods no problem mains and emergency type like for like
Emergency maintained running man exit signs to change like for like (existing approx.300mmx200mm) New standard running man fittings off the shelf at Newies are considerably bigger than the existing.
Commercially Neweis would not sell non-compliant fittings nor make bigger running man exit signs if they didn't have to, so when did the standard change
On a manufactures EM selection guide it shows a correlation between height of ceiling and running man mounting height
Thank you in advance
MrP
 13 June 2018 05:37 PM
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OMS

Posts: 22531
Joined: 23 March 2004

The sign dimensions are a function of the safety signs and signals regulations and generally compliance with BS 5499-4 which gives guidance on position and size

Basically, size is a function of viewing distance

Typically:

120x340mm - Viewing Distance 17m
150x400mm - Viewing Distance 22m
200x450mm - Viewing Distance 30m

Trust that helps

Regards

OMS

-------------------------
Let the wind blow you, across a big floor.
 14 June 2018 09:56 AM
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pww235

Posts: 234
Joined: 03 April 2014

Please remember that an UP arrow is what goes over a door to indicate "Progress forward and through from here."
 14 June 2018 02:36 PM
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MrP

Posts: 962
Joined: 24 March 2006

Thank you OMS
It appears that BS5499-4 was first published in 2000 and amended in 2013
As stated the existing refurbishment project signs pre date BS5499-4 2000. This could possibly be the reason for the change in the running man exit sign dimensions
I'm more than sure many on here involved with EM lighting. Does BS5499-4 2013 apply to new installation verification only.
This beggars the question on a EM lighting inspection report of an existing installation is there a requirement to note if the running man sign is compliant with the BS5499-4 2013 standard
MrP
 14 June 2018 04:32 PM
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pww235

Posts: 234
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There are two main formats of exit sign available: BS EN ISO 7010 and 'Euro' legends. People often mention British Standard legends quoting BS 5499-4 but these are the same as the ISO one.

BS EN ISO legend has the figure passing through a doorway as a single pictogram.
Euro legend has the figure and door as separate pictograms with the arrow between them.

Essentially either of them complies with the Signs and Signals Regulations (the legislation covering this topic) however local authorities may have their own requirements.

A point to watch though is that you shouldn't mix and match. Therefore if you are refurbishing a part of a building where the escape route within your demise connects into the wider building prior to reaching open air, the ones going in during the refurb should match the format present elsewhere in the building.
 14 June 2018 06:17 PM
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HarryJMacdonald

Posts: 453
Joined: 15 May 2002

"no problem mains and emergency type like for like" One point to be careful of. Some manufacturers have started to produce a switchable maintained fitting where the switching is done by a low voltage pair to the switch. These are not interchangeable with the live/switched live/ neutral type but it is often not apparent until you get the instructions out of the box which type you are being sold.
 14 June 2018 09:28 PM
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Dave69

Posts: 717
Joined: 16 July 2011

Think most things have already been said.
Bigger is better as it covers up naked walls with no paint behind the old lights.
The size of the signs is dependant on the size of the area they are in. The FRA should say if signs need to bigger than the norm.
If the installation is ten years old though, you may find you need more emergency lights now, lights over MCPs, fire fighting equipment, etc.
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