907.2.3 Group E.
A manual fire alarm system shall be installed in Group E occupancies. When automatic sprinkler systems or smoke detectors are installed, such systems or detectors shall be connected to the building fire alarm system.
Exceptions:
1. Group E occupancies with an occupant load of less than 50.
2. Manual fire alarm boxes are not required in Group occupancies where all the following apply:
2.1. Interior corridors are protected by smoke detectors with alarm verification.
2.2. Auditoriums, cafeterias, gymnasiums and the like are protected by heat detectors or other approved detection devices.
2.3. Shops and laboratories involving dusts or vapors are protected by heat detectors or other approved detection devices.
2.4. Off-premises monitoring is provided.
2.5. The capability to activate the evacuation signal from a central point is provided.
2.6. In buildings where normally occupied spaces are provided with a two-way communication system between such spaces and a constantly attended receiving station from where a general evacuation alarm can be sounded, except in locations specifically designated by the building official.
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