Ontario Building Code Group F Industrial Regulations: 2024 Guide to Sections 3.2.2.73 - 3.2.2.76
Sarah's Expert Insight
OBC Compliance Specialist
"Navigating Group F classifications is critical for industrial developments in London and Oakville, where fire-resistance ratings directly impact structural costs and zoning compliance. At empcontracting.ca Inc. your construction contractor in London, Ontario, we focus on optimizing the building area vs. construction type ratio to ensure our clients maximize their square footage while remaining fully compliant with 2024 OBC fire safety standards."
Understanding the complexities of the 2024 Ontario Building Code (OBC) is essential for industrial development. Whether you are planning a high-hazard facility or a medium-hazard warehouse, complying with fire-resistance ratings and construction types is mandatory. For expert guidance, trust empcontracting.ca Inc. your construction contractor in London, Ontario to manage your industrial project safely and efficiently.
Group F, Division 1: High-Hazard Industrial Buildings
Group F, Division 1 classifications apply to buildings with high-hazard industrial occupancy. The OBC specifies strict limitations on building area and height based on the type of construction used.
3.2.2.73. Up to 3 Storeys, Sprinklered
Buildings in this category are permitted to be of heavy timber or noncombustible construction. Requirements include:
- Sprinkler Systems: Mandatory throughout the building.
- Building Area: Maximum 3,600 m² for 1 storey, 1,800 m² for 2 storeys, and 1,200 m² for 3 storeys.
- Fire Ratings: Floor assemblies must have a fire-resistance rating of at least 45 minutes.
3.2.2.74. Up to 2 Storeys, Sprinklered
These buildings allow for combustible construction provided the building area does not exceed 2,400 m² for a single storey or 1,200 m² for two storeys. Loadbearing elements must meet a 45-minute fire-resistance rating or be noncombustible.
3.2.2.75. One Storey (Unsprinklered Limitations)
A single-storey high-hazard building is permitted to be of combustible construction without mandatory sprinklers only if the building area is restricted to 800 m² or less.
Group F, Division 2: Medium-Hazard Industrial Buildings
3.2.2.76. Any Height, Any Area, Sprinklered
For large-scale medium-hazard industrial projects that require unlimited height or area, the OBC mandates the following:
- Construction Type: Must be strictly noncombustible construction.
- Fire Separations: Floor assemblies require a fire-resistance rating of at least 2 hours.
- Mezzanines: Must maintain a fire-resistance rating of at least 1 hour.
- Structural Support: Loadbearing walls and columns must match the rating of the assembly they support.
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.