Respectively, under what circumstances
Smoke staircase need to have pressurized air supply equipment, the need for a corresponding level of fire doors, the need for a certain area of the small room before the room. Closed stairs do not need to have these conditions. Smoke staircase set range: a class of buildings, more than 32m height of the two types of buildings (excluding units, corridor-style residential) and tower residential
The difference is that the closed staircase without smoke before the room, while the smoke staircase between the bustling house shares Yijiao turtle tied tyrants have smoke before the room. Anti-smoke staircase ladder and fire elevator combined with the area of the front room, public buildings should not be less than 10.00m2, residential buildings should not be less than 4.50m2, residential buildings should not be less than 4.50m2; Less than 6.00m2. According to the "high-rise civil building design fire safety requirements" requirements, a class of buildings and in addition to the unit and the corridor-style residential building height of more than 32m of the two types of buildings and tower residential, nineteen and nineteen level apartment , More than eleven layers of corridor-style residential, can not be directly natural lighting and natural ventilation of the staircase, should be set to smoke staircase.
