From Dale Rossetti
The International Organization for Standardization’s test, which rates how long a fire door can endure as the temperature rises, is silly. There are two variables here: time and temperature. It would be better to rate the doors by the temperature at which they fail. Combining this with the experience of when that temperature is reached in a real fire would give a far more accurate estimate of the time people have to escape from a building.
Airdrie, Alberta, Canada
