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As we approach the end of 2023, it's essential to review the noteworthy changes introduced in the BC Building Code (BCBC) this year. Despite hopes for a decrease in housing prices remaining unfulfilled, recent updates align the code with the 2020 National Building Code of Canada (NBC). These changes, tailored to BC's unique characteristics, encompass geography, climate, local government needs, industry practices, and provincial priorities. Here's an overview of the significant amendments.
Adjustments have been implemented in Division B, impacting Parts 1, 3, 9, 10 (General, Fire Protection Occupant and Accessibility, Housing and Small Buildings, and Energy Efficiency). Noteworthy changes include measures aimed at preventing indoor temperatures from exceeding 26°C to counteract the escalating extreme summer heat. The devastating heat dome in 2021, resulting in 619 deaths in BC, prompted these measures to address the potential human and healthcare costs of future extreme heatwaves.
In Part 3, safety enhancements include ensuring that the signal of a smoke detector device in a residential suite is audible within the individual suite for the safety of occupants in case of a sudden fire. Additionally, the code discontinues the option for penetrations of a fire-rated assembly to be tightly fitted, prioritizing safety.
The second significant change involves updated accessibility requirements (edits in Parts 3 and 9) to reduce barriers, featuring power-operated doors in all building entrances and universal washrooms to assist those with difficulty opening doors. Amendments also impact ramps, stairways, tapered treads, maximum Vertical Rise of Stair Flights, and Required Landings to align with NBC 2020 rules, fostering a more accessible environment.
Other modifications relate to the definitions of terms, legislation, and adjusting rulings, primarily aligning the previous rules with those of the NBC 2020 edition. An example of this is changing the method for assessing mezzanines—an intermediate sub-floor between two main floors of a building—from the NBC 2020 edition. With the NBC method, a mezzanine can be exempt from consideration as a storey or floor in building height if it occupies not more than 40% of the available area of a room, and the space above the mezzanine is open. A legislation change involves referencing the “Safety Standards Act and pursuant regulations” instead of the previous references to specific regulations.
A notable addition is the incorporation of the Zero Carbon Step Code, introduced on May 1, 2023. This opt-in building carbon pollution standard addresses greenhouse gas emissions, and amendments to Division B, Parts 9 and 10, add new optional technical building requirements for the reduction of greenhouse gas (GHG) emissions.
The changes made regarding energy efficiency this year are aimed at a 20% increase in energy efficiency, contributing to CleanBC’s goal of net-zero energy-ready new construction by 2032. Part 3 amendments introduce the Zero Carbon Step code and modified Total Energy Use Intensity targets for office and retail occupancies. Technical requirements for GHG emissions have been added to the BCBC using a tiered approach, and local authorities have the discretion to determine which of the tiers, if any, will apply within their area of authority.
It's crucial to note that these code changes apply exclusively to new buildings, sparing older ones with permits issued before the update dates. However, housing costs are anticipated to rise, and uncertainties, such as permit delays, labour shortages, and market crisis, pose challenges to the construction industry. The potential mandatory enforcement of CleanBC’s Zero Carbon Step Code requirements could exacerbate these challenges, potentially worsening the housing market crisis.
Anticipate more changes in the BCBC code, with an updated version slated for March 2024. Information on requirements for altering buildings will be released in 2024. Staying informed is paramount, especially for those in the construction industry, who should prepare for upcoming changes.
In conclusion, the 2023 BC Building Code changes are a comprehensive response to critical issues such as extreme heat, accessibility, and energy efficiency. Designed to create safer, more accessible living spaces and reduce greenhouse gas emissions, these changes apply exclusively to new constructions. However, it is crucial for those in the construction industry to stay informed, ensuring preparedness for future changes. To learn more explore Ashton College’s BC Building Code 2023 Course here.
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