Abstract
Evacuation methods (elevator control method and instructions of evacuation) using elevators and stairs have been studied in tall buildings, and we proposed the evacuation method which give the shortest evacuation time. In this paper, we studied the evacuation time without special elevator control and instructions of evacuation. The results show the occupants of every floor flow into stairs in early stage of the evacuation and after then no one use elevators. If there is information that elevators are usable, the evacuation time can be short considerably.
