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Author Topic: BS9999 and ventilation  (Read 6282 times)

Offline TickityBoo

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BS9999 and ventilation
« on: January 18, 2009, 09:20:20 PM »
Can anyone advise on the ventilation element of BS9999.  It mentions in Tables 26 & 27 about ventilation openings - are these automatic opening windows/ventilators or fixed windows intended to fracture during the fire or windows opened by the FRS after the fire?  Not quite "getting" this part of the BS.
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Offline yellowjacket

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Re: BS9999 and ventilation
« Reply #1 on: January 19, 2009, 11:12:27 AM »
As I understand it, it's windows or  similar, don't have to be automatic.
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Offline colin todd

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Re: BS9999 and ventilation
« Reply #2 on: January 21, 2009, 10:07:10 PM »
Tickity, If you email me I might be able to assist you as the explanation is not simple.
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Colin Todd, C S Todd & Associates

Offline Peter Wilkinson

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Re: BS9999 and ventilation
« Reply #3 on: January 22, 2009, 12:53:25 PM »
I think we'd all benefit from your explanation, Colin.
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(all the stuff I said above is purely my own personal view and in no way represents any official view of my employer)

Offline colin todd

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Re: BS9999 and ventilation
« Reply #4 on: January 22, 2009, 10:18:57 PM »
Peter, As your employer runs courses on BS 9999, I am sure you cover the basis of this on the course. Don't you???????? Those teaching the subject could hardly benefit from any small wisdom I might have. I was going to offer Tickity some help, but it would probably need dialogue rather than a bulletin board. Equally, as a course provider you might be able to explain it more succinctly!
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Colin Todd, C S Todd & Associates

Offline kurnal

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Re: BS9999 and ventilation
« Reply #5 on: January 23, 2009, 09:54:45 AM »
Would this aspect (relating the standards of fire resistance of structural elements to the degree of  potential ventilation conditions) have been better omitted from BS9999 and instead left as a potential approach in fully engineered buildings- ie the province of PD7974?

Standards and guidance are divergent at the moment- on the one hand the workmanlike ADB now has a companion version "Insurers Requirements for Property protection" pushing in one direction and in this aspect the  equally workmanlike  BS9999 pulling in another.

Whats the designer to do? 
« Last Edit: January 23, 2009, 09:58:58 AM by kurnal »
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Offline TickityBoo

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Re: BS9999 and ventilation
« Reply #6 on: January 23, 2009, 09:59:09 PM »
Hi Colin

I did email you but not sure if you got it?
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