Simulation of fire evacuation in a high-rise office building

In order to find out the evacuation process of people when fire occurs in a high-rise building, the evacuation process in a ten-storey telecom office building is simulated under different opening conditions by using FDS+Evac software. The temperature field, smoke layer height and toxic gas index are analysed quantificationally. The results prove that about 70% of time is wasted in the stairs because of the stoppage during people evacuation. The exit numbers have little effect on the evacuation time if the number of people is small and they are familiar with the exits. However, adding another stair case in the building is able to reduce 1/3 time of evacuation.