Will the door of the closed staircase usually closed? Thank you!
Closed the door of the staircase is a spring door, you can open the two-way, it must always be off the. Personnel-intensive places, closed staircase doors should be B fire doors, one is with a closed door, open automatically shut down; there is a can often open, but the need for fire linkage, when the fire automatically shut down, of course , You can still open the door, not locked.
Oh, can it, the recent fire brigade always crowded places in the application of B fire door to find fault, so the memory is deep.
?? Details can be found in the architectural design fire safety standard GB50016-2006 7.4.1 ~ 7.4.2 on the definition of closed staircase. 7.4.2 Article 5 states that a door in a closed staircase other than 1 to 4 may use a bidirectional spring door. And 7.5.2 on the requirements of the fire door:
????? 1. should have autistic function. The The The The
????? 2. Normally open fire doors should be able to shut down in the fire itself, and should have the function of signal feedback (that is, the fire linkage part)
????? 3. Both sides of the fire door should be opened manually.
