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.



Size of trimmer joists when the header joists exceed 2 m in length around openings, in wood-frame constructions to which Section 9.23. applies [see Sentence for application of Section 9.23.].


To expand the application of Part 4 to include the structural design of trimmer joists that exceed the scope of Subsection 9.23.9.