Richard Stevens
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Posts posted by Richard Stevens
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Hi
Can anyone help with why there is a difference between exit width capacity between ADB & the HM Government Guides.
Table 4 ADB for a 750mm door is 60 persons however DCLG states for 750mm, 80 for high risk - 100 normal & 120 low risk.
I appreciate that ADB is fairly black & white and is for new builds and refurbs whereby DCLG is for existing building so will give a degree of flexibility.
The history of 40 persons per minute via a 525 with door will give you your 2 mins (high) 80 persons - 2.5 mins (normal) 100 persons 3 mins (low) 120 so all adds up but
1050mm ADB = 220 - DCLG 160 - 200 - 240, so these are double the 750mm figures but 1050mm is not double 750mm?
Probably looked at it too much and missing the obvious but please humour me.
Cheers
Richard
Exit Capacity Difference ADB/DCLG
in Fire Exits
Posted
Thank you