2024 Ontario Building Code: Fire Safety and Seating Standards for Assembly Occupancies
Sarah's Expert Insight
OBC Compliance Specialist
"When developing community hubs in London or recreational facilities in Oakville, these seating and fire separation regulations are non-negotiable for passing municipal inspections. At empcontracting.ca Inc., we leverage these specific 2024 OBC updates to optimize floor plans, ensuring that every assembly space we build provides maximum safety without compromising on spectator capacity."
Navigating the complexities of the 2024 Ontario Building Code (OBC) is essential for any commercial build. As empcontracting.ca Inc. your construction contractor in London, Ontario, we specialize in implementing these high-level safety standards for assembly occupancies.
3.3.2.6. Fire Separation in Corridors
In assembly occupancies, corridors serving as access to exits generally require a fire separation with a fire-resistance rating of at least 1 hour. However, the OBC allows for flexibility:
- Reduced Ratings: A 45-minute rating may be acceptable if specific floor assembly conditions are met.
- Sprinkler Exceptions: The requirement may be waived entirely if the floor area is fully sprinklered.
- Travel Distance: Separation requirements might be waived if travel distances to exits are sufficiently short per Article 3.4.2.5.
3.3.2.7. Exit Door Latching and Hardware
Safety for High-Occupancy Areas
For rooms or suites designed for more than 100 occupants, any door equipped with a latching mechanism must feature hardware that allows for easy egress, ensuring that panic hardware or emergency release systems are compliant with OBC 3.4.6.16.(3).
3.3.2.8. Fixed Bench-Type Seating Standards
Proper spatial planning is vital for spectator safety and comfort. The 2024 code specifies:
- Width: A minimum of 450 mm per person.
- Spacing: Row spacing must be at least 760 mm (with backrests) or 550 mm (without backrests).
- Clear Space: A minimum 300 mm gap between the back of one seat and the front of the next.
3.3.2.9. Guard Height Requirements
Guards are critical in tiered seating environments to prevent falls. Requirements vary based on location:
- Fascias and Balconies: Minimum heights range from 760 mm to 920 mm depending on proximity to aisles or steps.
- Bleachers: For seats more than 1,200 mm above ground, guards must be at least 1,070 mm high above the aisle or 920 mm above seat boards.
- Front of Bleachers: A guard of at least 840 mm is required if the front is more than 600 mm above the floor.
Disclaimer: This content is generated from the Ontario Building Code for educational purposes. Always consult with a licensed professional engineer or your local building department before starting any construction project in London, Ontario.