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Re: NFPA921 compartment-fire graphs
Posted by: Sir Gary (IP Logged)
Date: April 27, 2020 10:26AM

Whilst two sets of graphs (attached) however don't compare apples to apples (in terms of ventilation),
FIGURE 5.6.3.2.1(a) shows an accelerated unventilated fire peaking circa 3 minutes and an unaccelerated initially-unventilated fire peaking after 30 minutes.


FIGURE 5.6.3.2.1(b) shows "time-shifted comparisons" them all peaking after 10 minutes; is this a common timeline or not-?
Also this graph refers to this being of the "exponential growth stage"? (clue in there I'm missing?)

Any help in putting me straight on what I'm (not) seeing would be appreciated.

Or a pointer where I can find Mealy (2007);
perhaps his full set of data allows for an apples-vs-apples comparison?
(my void was ventilated into a large livingroom)

Attachments: FIGURE 5.6.3.2.1(b).jpg (222.8kB)  
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Subject Views Written By Posted
  NFPA921 compartment-fire graphs 877 Sir Gary 04/27/2020 10:13AM
  Re: NFPA921 compartment-fire graphs 546 Sir Gary 04/27/2020 10:26AM
  Re: NFPA921 compartment-fire graphs 492 dcarpenter 04/28/2020 02:44PM
  Re: NFPA921 compartment-fire graphs 489 dcarpenter 04/28/2020 03:41PM
  Re: NFPA921 compartment-fire graphs 510 Sir Gary 04/30/2020 03:25AM


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