3.1.5.10.(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:
Combustible interior ceiling finishes, other than foamed plastics, in buildings described in Sentence
1.3.3.2.(1) of Division A that are required to be of noncombustible construction, where such ceiling finishes:
- are not more than 25 mm thick, except for exposed fire-retardant treated wood battens, and
- have a flame-spread rating not more than 25 on any exposed surface, or on any surface that would be exposed by cutting through the material in any direction, or are of fire-retardant treated wood, except that not more than 10% of the ceiling area within each fire compartment is permitted to have a flame-spread rating not more than 150.
This also applies to buildings to which Part 9 applies [see Sentence
1.3.3.3.(1) of Division A for application
of Part 9] that are required to be of noncombustible construction, as stated in Sentence
9.10.6.1.(1).
INTENT:
To exempt certain combustible materials from the application
of Sentence
3.1.5.1.(1) if certain conditions are met, on the basis
that the materials are deemed to insignificantly contribute to fire growth
and spread.