Back9.17.2.2.(3)

ATTRIBUTION:

Most technical provisions of the BC Fire Code describe how the code’s objectives and functional statements are achieved. However, some provisions, like this one, do not relate directly to a code objective. The following analysis is provided to assist in understanding of the provision.

 

APPLICATION:

Columns supporting beams carrying loads from a deck or other accessible exterior platform with no roof, where the distance from finished ground to the underside of the joists is not more than 600 mm, for buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], where:
  • the supported length of joists bearing on such beams or rim joists does not exceed 5 m,
  • the sum of the specified snow and occupancy loads on the platform-type construction does not exceed 4.8 kPa,
  • the platform serves only a single suite of residential occupancy, and
  • the platform does not serve as a required exit.

INTENT:

To exempt from the application of Sentence 9.17.2.2.(2), columns for which significant racking is unlikely, and where racking does occur, structural implications will not create a safety hazard.