How Long a Room Takes to Empty, and With Which Door Gone EVACUATE
A hall with three wide doors is fine on paper and a different building with the best one gone. That second sum is the whole reason for doing the first.
The building
The rooms
Room or storeyPeopleExit widths, mmTravel, m
Widths are the clear width between the door stops, not the frame. Travel is the distance from the furthest point in the room to a door, which is added to the queueing time rather than hidden inside it.
With and without the best door
The working
Widths follow the published step table: 750 mm serves 60 people, 850 serves 110, 1050 serves 220, and 5 mm per person above that. This is arithmetic, shown and checkable, rather than a fire risk assessment.
Questions people ask about EVACUATE