Doors in smoke partitions must be what by smoke detection?

Doors in smoke partitions are required to be equipped to respond effectively to smoke detection systems to maintain the integrity of the smoke barrier. The key aspect is that these doors must be able to close automatically to prevent smoke from spreading through the partition.

Both self-closing and automatic-closing doors serve this purpose effectively. Self-closing doors operate on a mechanism, such as a spring, that allows them to close automatically after being opened. Automatic-closing doors, on the other hand, may be activated by smoke detection systems or alarms, ensuring they close without manual intervention.

Thus, the requirement is met whether the doors are self-closing or automatic-closing, making either option acceptable in terms of compliance with smoke partition standards. This flexibility ensures that buildings can choose the mechanism that best fits their design and operational needs while still adhering to safety protocols.