Is a class of high - rise building stairs out of the roof to do the front room
Second, the term explained:
The front room, that is set in the flow of people into the fire elevator, smoke staircase or no natural ventilation of the closed staircase before the transition space. Located in the fire elevator exit, for personnel access, evacuation of the small room or in the smoke staircase entrance to prevent the fire smoke into the smoke staircase room small room. In the "Building Design Fire Code" and "high-rise civil building design fire protection", the fire elevator front room, smoke staircase front room, fire elevator and smoke staircase between the front of the smoke and smoke problems and its size Made strict rules.
Staircase in the layers of the entrance to set the front room (front chamber pressurized air) is to prevent the smoke into the staircase, in order to ensure the safe evacuation of personnel.
Stairway out of the roof is the outdoor security space, so there is no requirement to set the front room.
First, a class of high-level according to the provisions of the provisions, need to set up smoke staircase, that is to say before the room. Set the main situation of the front room:
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, should be set up smoke staircase.
Stairway entrance should be located in the front room, balcony or gallery. - "high-rise civil building design fire safety norms"
?When the natural lighting and natural ventilation, the staircase should be in accordance with the provisions of Chapter 9 of the Code set up smoke or smoke facilities, should be in accordance with the provisions of Chapter 11 of this standard fire emergency lighting facilities.
In the entrance of the staircase should be set up front smoke, open balcony or corridor and so on. Smoke before the room can be used with the fire room before the room. --"Architectural design code for fire protection"
