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This is Part 2 of a three-part paper on fire design written to support architects and engineers exploring the use of mass timber for commercial
and multi-family construction.
Comparing Construction Types
As noted in Part 1, selection of construction type for mass timber projects is one of the more significant design considerations. Table 4 sum-
marizes the main differences between Types III, IV and V, as well as the different types of wood systems permitted in each. These allowances
are shown in IBC Section 602, Table 601 and Section 2304.11.
The Loading Dock, Boulder, CO, Architect: OZ Architecture , Structural Engineer: KL&A, Photo: JC Buck
Fire Design of Mass Timber Members - Part 2
Code Applications, Construction Types and Fire Ratings
By Richard McLain, PE, SE and Scott Breneman , PhD, PE, SE
