Delete Section 403.5.3 and replace as follows:
   B-403.5.3 Stairway door operation. Stairway doors other than the exit discharge doors shall be permitted to be locked from the stairway side. Stairway doors that are locked from the stairway side shall be capable of being unlocked simultaneously, without unlatching, upon a signal from the fire command center where the fire command center is continuously staffed during any occupancy, or upon power failure. Where the fire command center is not continuously staffed during occupancy, the stairway doors shall unlock upon activation of the building fire alarm system or upon power failure.