The role of safe passage
According to the design principle of safe evacuation route, it is safer step by step and safer step by step when people are evacuated.
It is considered that the appropriate method is to set up a safe passage between the evacuation stairwell and the outdoor safety area for evacuation in emergency. In case of fire, people in the area with long evacuation distance can enter the safe passage first, and then evacuate from the safe passage; People evacuated from upstairs to the first floor can also be safely evacuated to the outside through the safe passage.