Name of hotel evacuation stairs

Outdoor evacuation stairs. The name of hotel evacuation stairs is outdoor evacuation stairs, and the stairs used for safe evacuation of people include: open stairs, closed stairs, smoke-proof stairs and outdoor evacuation stairs. When there is a fire in a building, ordinary elevators fail to take effective measures to prevent fire and smoke, and the power supply is interrupted, so they usually stop running. Only through the stairs can people upstairs be evacuated to an outdoor safe area. Therefore, stairs are the most important vertical evacuation facilities.