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LAX APM ADA Coordinator Files (LINXS)

California Building Code Excerpt

Section 907 Fire Alarm and Detection Systems

Partial code excerpt regarding fire alarm and detection systems.

Section 907 Fire Alarm and Detection Systems

907.1 General. This section covers the application, installation, performance and maintenance of fire alarm systems and their components.

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907.5 Occupant notification systems. A fire alarm system shall annunciate at the fire alarm control unit and shall initiate occupant notification upon activation, in accordance with Sections 907.5.1 through 907.5.2.3.4. …

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907.5.2 Alarm notification appliances. Alarm notification appliances shall be provided and shall be listed for their purpose.

907.5.2.1 Audible alarms. Audible alarm notification appliances shall be provided and emit a distinctive sound that is not used for any purpose other than that of a fire alarm. In Group I-2 occupancies, audible appliances located in patient areas shall be only chimes or similar sounding appliances for alerting staff. See Section 907.6.6.

Exceptions:

  1. Audible alarm notification appliances are not required in patient areas of Group I-2 occupancies that are in compliance with Section 907.2.6, Exception 2.
  2. A visible alarm notification appliance installed in a nurse’ control station or other continuously attended staff location in a Group I-2 suite shall be an acceptable alternative to the installation of audible alarm notification appliances throughout the suite in Group I-2 occupancies that are in compliance with Section 907.2.6, Exception 2.
  3. When provided, audible notification appliances located in each occupant evacuation elevator lobby in accordance with Section 3008.9.1 shall be connected to a separate notification zone for manual paging only.

907.5.2.1.1 Average sound pressure. The audible alarm notification appliances shall provide a sound pressure level of 15 decibels (dBA) above the average ambient sound level or 5 dBA above the maximum sound level having a duration of at least 60 seconds, whichever is greater, in every occupiable space within the building.

907.5.2.1.2 Maximum sound pressure. The maximum sound pressure level for audible alarm notification appliances shall be 110 dBA at the minimum hearing distance from the audible appliance. Where the average ambient noise is greater than 95 dBA, visible alarm notification appliances shall be provided in accordance with NFPA 72 and audible alarm notification appliances shall not be required.

907.5.2.1.3 Audible alarm signal. The audible signal shall be the standard fire alarm evacuation signal, ANSI S3.41 Audible Emergency Evacuation Signal, “three pulse temporal pattern,” as described in NFPA 72.

Exception: The use of the existing evacuation signaling scheme shall be permitted where approved by the enforcing agency.

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907.5.2.3 Visible alarms. Visible alarm notification appliances shall be provided in accordance with Sections 907.5.2.3.1 through 907.5.2.3.4.

Exceptions:

  1. In other than Group I-2 and I-2.1, visible alarm notification appliances are not required in alterations, except where an existing fire alarm system is upgraded or replaced, or a new fire alarm system is installed.
  2. Visible alarm notification appliances shall not be required in enclosed exit stairways, enclosed exit ramps, exterior exit stairs and exterior exit ramps.
  3. Visible alarm notification appliances shall not be required in elevator cars.

907.5.2.3.1 Public use areas and common use areas. Visible alarm notification appliances shall be provided in public use areas and common use areas, including but not limited to:

  1. Band rooms
  2. Classrooms
  3. Corridors
  4. Gymnasiums
  5. Lobbies
  6. Meeting rooms
  7. Multipurpose rooms
  8. Music practice rooms
  9. Occupational shops
  10. Occupied rooms where ambient noise impairs hearing of the fire alarm
  11. Sanitary facilities including restrooms, bathrooms and shower rooms

Exception: Where employee work areas have audible alarm coverage, the notification appliance circuits serving the employee work areas shall be initially designed with not less than 20-percent spare capacity to account for the potential of adding visible notification appliances in the future to accommodate hearing-impaired employee(s).

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