B.C. adopts building code changes for taller mass timber

Key Takeaways:

• The changes allow mass timber buildings to go to 18 storeys and be utilized in new building types, including schools, libraries, retail, industrial, care facilities and more.
• The BC Building Code changes for mass timber were developed by a national joint task group co-chaired by B.C. and Quebec.
• The changes come just days after Ontario announced their own plans to allow 18-storey mass timber buildings.

The Whole Story:

It’s official. B.C. is going tall with mass timber.

The province has adopted building code changes to permit the use of mass timber in buildings, such as schools, shopping centres and housing. The changes were proposed last December.

“These changes will help reduce carbon pollution, support the forestry sector, create jobs, build more homes and lead to more vibrant communities,” said Ravi Kahlon, minister of housing. “We know mass timber looks great, and now we can use it in larger buildings and more types of buildings.”

The mass-timber updates to the BC Building Code, now in effect, will:

• enable taller encapsulated mass-timber construction (EMTC) buildings with as many as 18 storeys for residential and office buildings, an increase from the previous 12-storey limit;
• expand EMTC to new building types, such as schools, libraries, retail, light- and medium-industrial occupancies, and care facilities; and
• allow for more exposed mass timber in buildings, based on a building’s height and use, such as residential buildings with as many as eight storeys.

“This is another step forward for British Columbia’s world-class mass-timber sector as we continue to accelerate the adoption of this strong, clean building technology,” said Jagrup Brar, minister of state for trade, and chair of the Mass Timber Advisory Council. “Through our Mass Timber Action Plan, we are diversifying both our forestry and construction industries to build a strong, clean and sustainable economy that works for people.”

The BC Building Code changes for mass timber were developed by a national joint task group co-chaired by B.C. and Quebec. The code changes were reviewed by an expert technical advisory group that included representatives from multiple provinces, the fire services community, fire safety engineers, technical building code experts, regulators and industry.

Other provinces are expected to follow B.C.’s lead and adopt these changes into their building codes. The code changes will be submitted into the national code system for future consideration for the national building codes.

This month Ontario announced its own plans to expand the use of advanced wood construction like mass timber to new heights. Currently, Ontario’s Building Code allows Encapsulated Mass Timber Construction buildings to be up to 12-storeys tall. Officials said they intend to amend the Ontario Building Code in the coming months to permit encapsulated mass timber construction up to 18 storeys.

Advancing mass-timber technology is part of B.C.’s Homes for People action plan, to address the housing crisis through a variety of innovative approaches, including in the construction sector. This means embracing new technologies like digital design, mass timber and prefabrication to cut down on construction times and on-site labour needs to build more housing faster.

The province has also focused on increased density in urban areas through small-scale multi-unit housing and transit-oriented development, creating more mass-timber opportunities to build homes more quickly with a lower carbon footprint.