Is the wall of a closed staircase a fireproof wall?
Is the indoor staircase for the evacuation of the second floor house in the underground building? If made into a closed staircase, can not be directly ventilated lighting, need to do in the first floor and through the outdoor room?
At present, when I deal with this problem, I first communicate with the fire department and the fire department, usually do not need to close the staircase, at most, the window wells plus a ladder as the second sink. But there are departments and regions require strict implementation of norms, this time I often do in the first floor of the fire door made of closed staircase, the general staircase can be ventilated by the external walls of lighting, it is not the way to the underground stairway divided into the ground area inside , The basement part and the staircase between the separate fire doors,
This is a flaw in the current fire code, and there is no explicit requirement for a basement like a villa. The current new fire regulations are being developed and will soon be officially released.
