Guest Paul Walker Posted March 9, 2017 Report Share Posted March 9, 2017 Can anyone please explain where the 4.5m distance for means of escape past a void originates (with a reference if possible). Thanks Quote Link to comment Share on other sites More sharing options...
Tom Sutton Posted March 14, 2017 Report Share Posted March 14, 2017 What guidance are you quoting and most fire safety guidance originates from the post war studies with a bit of tweaking through the years. Quote Link to comment Share on other sites More sharing options...
Guest Paul Walker Posted March 15, 2017 Report Share Posted March 15, 2017 The guidance is contained in Approved Document B and BS9999; Diagram 14 and Figure 4 respectively. Quote Link to comment Share on other sites More sharing options...
Tom Sutton Posted March 16, 2017 Report Share Posted March 16, 2017 I do not believe you will get an answer to this one, as I said most fire safety guidance originates from the post war studies with a bit of tweaking through the years. You will never know who tweaked it and for what reasons. I think you will find many similar situations in fire safety and I think you will find a rational scientific reason for any of them. Quote Link to comment Share on other sites More sharing options...
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