01 - Fire Divisions

A location may have one or more fire divisions. Multiple fire divisions can be created by the presence of either physical distance (between two buildings or between combustible materials within a building) or walls (exterior or interior).

This risk factor evaluates the performance of fire divisions under normal conditions. This means the benefit of the public fire brigade and fixed fire protection are considered to the extent that they are provided and maintained.


  • The presence of open space, fire barriers, or fire walls to separate values
  • Fire-stopping of all pipe and cable penetrations in fire rated walls
  • Protection of openings in fire rated walls that is automatic or self-closing
  • Presence of fixed fire protection that rates A or B (see Risk Factor 08)
  • The presence of a public fire brigade that rates A or B (see Risk Factor 19).

  • Audit all fire walls and fire resistive barriers for penetrations. Install approved fire doors or shutters on all unprotected openings. Install approved automatic closures or seal penetrations with approved fire-stopping materials.
  • Upgrade old fire doors from slow fusible link operations (low temperature alloy that melts to release the door), to much faster operating smoke detector operated magnetic releases.
  • Provide door releases on either side of the door opening.
  • Ensure fire doors and operating devices are routinely maintained by a suitable contractor.
  • Ensure that areas between different buildings on site are kept free of combustible storage by including checks as part of regular housekeeping and self-inspection programs.


NFPA standards

  • NFPA 80 - Standard for Fire Doors and Other Opening Protectives
  • NFPA 105 - Standard for Smoke Door Assemblies and Other Opening Protectives
  • NFPA 221 - Standard for High Challenge Fire Walls, Fire Walls, and Fire Barrier Walls.