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Topic Title: new build smoke fire detection
Topic Summary: LD2 or LD3
Created On: 23 February 2014 09:07 PM
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 23 February 2014 09:07 PM
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aligarjon

Posts: 2867
Joined: 09 September 2005

Sorry for such a basic question but i am a bit confused. i am currently first fixing a new build timber frame house (2 storey). I was under the impression that i had to install a fire detection system to LD2 so heat detectors in the living area and kitchen as well as the usual hall and landing smoke detectors. Looking at the plans i have been supplied with and priced from there is only a LD3 system specified. I have spoken to the client who has spoken to his architect and says that anything above an LD3 is just recommendation and that he doesn't have to have it if he doesn't want it (which he doesn't). Is this corect or have things changed. i must confess that my BS5839-6 is from 2004 but that appears to say LD2 in table 1. i have the Aico guide in front of me that also says LD2 for new or materially altered buildings. so which is correct?
Any advice appreciated.

Gary

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Specialised Subject. The Bleedin Obvious. John Cleese
 23 February 2014 09:19 PM
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hifly

Posts: 698
Joined: 06 November 2005

this thread from a couple of weeks ago may help

http://www.theiet.org/forums/f...tid=205&threadid=56572

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Vince

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 24 February 2014 04:12 AM
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leckie

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Joined: 21 November 2008

Read the link posted from the previous thread.

This is a bit of a confusing area but in essence the building regs part B document is what you must satisfy. However, I would put into writing that the LD3 system does not comply with the recommendations of BS5839: 6 and that it is the architect that is the designer, not you.

Download Approved document B and have a read. There are some circumstance when a heat detector is still required in order to comply.

Edited: 24 February 2014 at 04:26 AM by leckie
 24 February 2014 07:34 AM
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aligarjon

Posts: 2867
Joined: 09 September 2005

Thanks Leckie i will take a look. i did read the other thread , which added to my confusion as i don't doubt what RnR says but it does appear to contradict BS 5839-6.

what is the point of having a british standard if you can just choose to ignore it ?

Gary

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Specialised Subject. The Bleedin Obvious. John Cleese

Edited: 24 February 2014 at 07:44 AM by aligarjon
 24 February 2014 10:04 AM
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hifly

Posts: 698
Joined: 06 November 2005

i would suspect this is not the only place where building regs and a BS don't sing from the same hyme sheet,

You have brought it to the attention of the client and designer and shown due diligence in doing so,

I would just move on with the benefit of knowing more today then i did yesterday.

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Vince

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 24 February 2014 10:04 AM
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Avatar for hifly.
hifly

Posts: 698
Joined: 06 November 2005

i would suspect this is not the only place where building regs and a BS don't sing from the same hyme sheet,

You have brought it to the attention of the client and designer and shown due diligence in doing so,

I would just move on with the benefit of knowing more today then i did yesterday.

-------------------------
Vince

Prove Dead Stay Alive


Christmas Cards for trades people

http://www.tradegreetingcards.com
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