On December 23, the City of Denver voted to adopt the 2019 Denver Building Code, which includes the tall mass timber code provisions approved for the 2021 International Building Code. As part of the adoption of the new code, there will be a four-month period where new projects can use either the 2016 Denver Building Code or the newly-adopted 2019 version. …“We congratulate the City of Denver…” said American Wood Council president & CEO Robert Glowinski. …The 2019 Denver Building Code will now recognize three new types of construction in the 2021 IBC:

Type IV-A – Maximum 18 stories, with gypsum wallboard on all mass timber elements.
Type IV-B – Maximum 12 stories, limited-area of exposed mass timber walls and ceilings allowed.
Type IV-C – Maximum 9 stories, all mass timber designed for a 2-hour fire resistance.