Zone
A defined area of a building for the purposes of alarm annunciation. Under the 2019 edition of S524, the fault tolerance rule is expressed in terms of National Building Code–required zones, replacing an earlier area-based definition.
A defined area of a building for the purposes of alarm annunciation. Under the 2019 edition of S524, the fault tolerance rule is expressed in terms of National Building Code–required zones, replacing an earlier area-based definition.