3.1.4.6.(2)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:
Minimum dimensions of wood elements in heavy timber construction in buildings described in Sentence
1.3.3.2.(1) of Division A where:
- this type of construction is specifically mentioned in this Part, or
- combustible construction is permitted and is not required to have a fire-resistance rating more than 45 min, as stated in Sentence 3.1.4.5.(1).
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] where heavy timber construction is considered to have a 45 min fire-resistance rating, as stated in Sentence
9.10.6.2.(1).
INTENT:
To describe the minimum dimensions of structural members
in heavy timber construction to limit the probability that the wood elements
will prematurely fail when subjected to fire, which could lead to premature
failure of the remainder of the heavy timber construction.