OBC Fire Separation Standards for Canopies and Walkways | empcontracting.ca Inc.
Sarah's Expert Insight
OBC Compliance Specialist
"In dense commercial sectors like downtown London or the growing retail hubs in Oakville, fire leap-frog protection via canopies is a critical design hurdle. At empcontracting.ca Inc. your construction contractor in London, Ontario, we often recommend full sprinkler integration not just for safety, but to bypass the 1m canopy requirement, allowing for the sleek, flush-facade aesthetics currently trending in Ontario's professional centers."
Navigating the complexities of the 2024 Ontario Building Code (OBC) is vital for ensuring the safety and compliance of commercial and industrial developments. At empcontracting.ca Inc. your construction contractor in London, Ontario, we specialize in implementing these critical fire safety measures for modern building designs.
Canopy Protection for Vertically Separated Openings (OBC 3.2.3.17)
In Group E (mercantile) or Group F (industrial) occupancies, the risk of fire spreading vertically between storeys must be mitigated. The OBC mandates that openings in exterior walls be separated by a canopy projecting at least 1 meter from the building face, or the upper storey must be recessed by the same distance.
Sprinkler Exemptions
Designers should note that these requirements for canopies or recessed walls are often waived if the building is equipped with a full sprinkler system, providing more architectural freedom in urban builds.
Covered Vehicular Passageways and Receiving Areas (OBC 3.2.3.18)
Passageways used for receiving or shipping must be strictly isolated. A fire separation with a rating of at least 1.5 hours is required between the passageway and any adjoining building. For projects in high-density areas, any below-grade passageway must be constructed of noncombustible materials to prevent sub-surface fire hazards.
Walkways Between Buildings (OBC 3.2.3.19)
Connecting two structures requires careful attention to fire ratings and material selection. Standard walkways require a 45-minute fire separation. While noncombustible construction is the default for walkways connecting noncombustible buildings, heavy timber may be permitted for ground-level walkways that maintain 50% open perimeter walls.
Underground Walkway Regulations (OBC 3.2.3.20)
Underground pedestrian tunnels are restricted to travel use unless specific sprinkler protections are installed for other occupancies. These tunnels must maintain a fire separation rating of at least 1 hour from the buildings they connect, ensuring a safe egress route during an emergency.
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.