2024 OBC Industrial Building Compliance: Guide to Renovations in London, Ontario
Sarah's Expert Insight
OBC Compliance Specialist
"Navigating Part 11 compliance alternatives is essential when repurposing heritage industrial sites in London or Oakville, as it allows for the retention of existing stairways and fire separations that would otherwise require costly structural overhauls. As your construction contractor in London, Ontario, empcontracting.ca Inc. ensures these alternatives are properly documented for Chief Building Official approval to keep your project on schedule and code-compliant."
Navigating the 2024 Building Code Compendium is critical for successful industrial renovations. Table 11.5.1.1.-F provides specific Compliance Alternatives (C.A.) for industrial occupancies, allowing for flexibility when existing conditions do not meet current new-construction standards. Working with empcontracting.ca Inc. your construction contractor in London, Ontario ensures these nuances are handled professionally.
Industrial Stairway and Egress Standards
Existing Stair Systems and Dimensions (F95–F97)
Under the current code, the replacement or extension of existing stair systems in industrial buildings may be exempt from standard Part 9 provisions. Key requirements include a minimum width of 700 mm between wall faces and a minimum clear height of 1,800 mm over the tread nosing. Existing tapered or spiral stairs are generally acceptable under these compliance alternatives.
Handrails, Guards, and Ramps (F98–F101)
Existing ramps, handrails, and guards are typically considered acceptable unless the Chief Building Official deems them unsafe. This allows for the preservation of existing safety infrastructure in older industrial facilities, provided they remain functionally sound.
Fire Safety and Exit Strategies
Approved Exit Types and Heritage Considerations (F103)
For industrial projects, several alternative exit types may be utilized, including:
- Connected balconies across firewalls or with grade access.
- Approved areas of refuge where fire service rescue is feasible.
- Exterior fire escapes, which can be reconstructed for heritage buildings provided they meet protection standards under Sentence 3.2.3.13.(2).
Fire Separations and Corridor Widths (F106–F111)
The code allows for a 30-minute fire separation for certain exits (F108). In specific industrial settings, a 45-minute fire-resistance rating is acceptable for enclosures, provided explosion-resistant construction or venting is in place where required.
Doors, Hardware, and Clearances
Door Widths and Swings (F112–F115)
Existing door widths are acceptable as long as the exit widths comply with a minimum clear height of 1,950 mm. Furthermore, existing door swings and panic hardware are permitted to remain if they are functionally operable, reducing the need for expensive hardware retrofits during minor renovations.
Space and Room Area (F116)
Under C.A. F116, the maximum area requirements for existing rooms or suites do not apply to industrial occupancies undergoing renovation, providing significant layout flexibility for growing businesses.
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.