SECTION B-907 FIRE ALARM AND DETECTION SYSTEMS

* * *
B-907.1.2 Equipment. Systems and their components shall be listed and approved for the purpose for which they are installed. Installation of systems, devices, appliances and equipment shall be in accordance with the provisions of Section B-907 and NFPA 72.
* * *

B-907.2.1 Group A. A manual fire alarm system shall be installed in accordance with NFPA 72 in all Group A occupancies having an occupant load of 300 or more and in all Special Assembly Occupancies. Portions of Group E occupancies occupied for assembly purposes shall be provided with a fire alarm system as required for the Group E occupancy.

Exceptions:

1. Manual fire alarm boxes are not required where the building is equipped throughout with an automatic sprinkler system and the alarm notification appliances will activate upon sprinkler water flow.

2. Manual fire alarm boxes are not required in Special Assembly Occupancies where the occupancy is protected throughout with a rate-of-rise heat detection system, provided one manual fire alarm box is installed in a location that is constantly attended by staff during periods of occupancy by the public.
* * *

B-907.2.1.3 Special Assembly Occupancies. In Special Assembly Occupancies, a shut-off (shunt trip) device shall be provided to automatically shut off electricity to circuits controlling audio equipment in the facility upon activation of the fire alarm system or automatic sprinkler system.
* * *

B-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, where interconnected smoke alarms are installed in accordance with Section B-907.2.10 and a minimum of one smoke alarm is installed in each classroom or child care room.
* * *

B-907.2.5 Group H. A manual fire alarm system shall be installed in Group H[-5] occupancies [and in occupancies used for the manufacture of organic coatings]. An automatic smoke detection system shall be installed for highly toxic gases, organic peroxides and oxidizers in accordance with Chapters 37, 39 and 40, respectively, of the International Fire Code.

B-907.2.6 Group I. A manual fire alarm system and an automatic fire detection system shall be installed [in] throughout Group I occupancies except as modified by Sections B-907.2.6 through B-907.2.6.2.3. An electrically supervised, automatic smoke detection system shall be provided in waiting areas that are open to corridors.
* * *

B-907.2.9 Group R-2. A manual fire alarm system shall be installed in Group R-2 occupancies [where:

1. Any dwelling unit or sleeping unit is located three or more stories above the lowest level of exit discharge;

2. Any dwelling unit or sleeping unit is located more than one story below the highest level of exit discharge of exits serving the dwelling unit or sleeping unit; or

3. The building contains more than 16 dwelling units or sleeping units].
* * *

B-907.2.10.1.2 Groups R-2, R-3[,] and R-4 [and I-1]. Single- or multiple-station smoke alarms shall be installed and maintained in Groups R-2, R-3[,] and R-4 [and I-1] regardless of occupant load at all of the following locations:
* * *
[B-907.2.10.1.3 Group I-1. Single- or multiple-station smoke alarms shall be installed and maintained in sleeping areas in occupancies in Group I-1. Single- or multiple-station smoke alarms shall not be required where the building is equipped throughout with an automatic fire detection system in accordance with Section B-907.2.6.]
* * *

B-907.2.10.3 Interconnection. Where more than one smoke alarm is required to be installed within an individual dwelling unit or sleeping unit in Group R-2[,] or R-3, [or] throughout Group R-4, or within an individual dwelling unit or sleeping unit in Group R-1, the smoke alarms shall be interconnected in such a manner that the activation of one alarm will activate all of the alarms in the individual unit or throughout the Group R-4 occupancy. The alarm shall be clearly audible in all bedrooms over background noise levels with all intervening doors closed.
* * *

B-907.2.24 Mixed residential and nonresidential occupancies. Where a nonresidential occupancy is located below a residential occupancy, an automatic fire detection system shall be installed throughout the nonresidential occupancy. Fire alarm notification appliances shall be installed throughout buildings containing such mixed occupancies and shall be actuated by all automatic fire detection and manual fire alarm boxes in the building.

Exceptions:

1. The fire alarm system and automatic detection is not required where the non-residential occupancy is equipped throughout with an approved automatic sprinkler system installed in accordance with Section B-903.3.1.1 and the building has a local fire alarm that meets the notification requirements of Section B-907.9.2.

2. Where automatic fire detection is required in drinking and dining establishments that are below a residential occupancy, heat detectors shall be accepted in lieu of smoke detectors in kitchens, in patron areas designated for smoking, and in patron areas where skillet or sizzling type entrees such as fajitas are served.
* * *

B-907.3.1 Location. Manual fire alarm boxes shall be located not more than 5 feet (1524 mm) from the entrance to each exit. Additional manual fire alarm boxes shall be located so that travel distance to the nearest box does not exceed 200 feet (60,960 mm).

Exceptions:

1. Manual fire alarm boxes shall not be required in Group E occupancies where the building is equipped throughout with an approved automatic sprinkler system, the notification appliances will activate on sprinkler water flow and manual activation is provided from a normally occupied location.

2. Buildings of Group R-2 occupancy having a single exit and not exceeding three stories are not required to have a manual fire alarm box at each story. One manual fire alarm box is required in the exit stairway at the exit discharge.
* * *

B-907.3.4 Signs (Delete text of subsection and substitute as follows)

B-907.3.4 Signs. Each manual fire alarm box shall have a permanent sign mounted immediately adjacent to the box that reads: "IN CASE OF FIRE -- SOUND ALARM AND CALL 911." It is permissible to substitute "FIRE DEPARTMENT" for "911."
* * *

B-907.8.1 Zoning indicator panel. A zoning indicator panel and the associated controls shall be provided [in an approved] at a visible location at the main entrance of the building or other location approved by the department. The visual zone indication shall lock in until the system is reset and shall not be cancelled by the operation of an audible-alarm silencing switch.
* * *