This could prove fatal. We encourage you to report anyone who pulls an alarm. Such a prank can endanger and inconvenience you and others in your building. Fire Doors There are fire doors at the end of hallways and in stairwells. The doors are specially constructed to delay the spread of fires.
Most regular doors have a burn-through time of about one hour.
Fire doors have a rated burn-through time of up to two hours. It is for this reason that fire doors, especially in corridors, should never be propped open. They are a primary factor in slowing the spread of fires. The detectors will set off the building alarm. It is possible that from time to time a detector may malfunction and set off an alarm.