OBC 2024 Guide: Exit Signage and Emergency Lighting Requirements in Ontario
Sarah's Expert Insight
OBC Compliance Specialist
"In my practice at empcontracting.ca Inc., we often find that developers in London and Oakville overlook the 30-minute backup requirement for emergency lighting during renovations of older 3-storey buildings. Strict adherence to the 50 lx illumination standard and precise floor numbering placement is not just a code requirement—it's a critical safety measure that facilitates rapid emergency response in dense urban areas or remote Muskoka hospitality sites."
Safety and Compliance for Egress Facilities under OBC Section 9.9
Navigating the 2024 Building Code Compendium is essential for maintaining safety and legal compliance in modern developments. As empcontracting.ca Inc. your construction contractor in London, Ontario, we prioritize these life-safety standards to ensure your building projects meet all provincial regulations.
9.9.11. Directional Signage and Floor Numbering
According to OBC 9.9.11.4 and 9.9.11.5, signage must be intuitive and accessible. In buildings that are three storeys in height, any part of a stairway that continues past the exit level must be clearly marked to prevent occupants from traveling past the exit. For floor numbering, the code mandates specific physical requirements:
- Arabic numerals must be at least 60 mm high and raised 0.8 mm.
- Numbers must be located 1500 mm from the floor and within 300 mm of the door.
- High-contrast colors are required to ensure visibility during emergency scenarios.
9.9.12. Illumination and Emergency Lighting Standards
Subsection 9.9.12 dictates that every exit and public corridor must be equipped with illumination at an average level of at least 50 lx at the floor or tread level. More importantly, emergency lighting requirements (9.9.12.3) specify that:
- Lighting must be provided in all exits, public corridors, and principal access routes.
- The system must be connected to a separate power source from the main building supply.
- Lighting must actuate automatically and remain operational for a minimum of 30 minutes upon power interruption.
Whether you are developing a hotel or a commercial space, empcontracting.ca Inc. your construction contractor in London, Ontario ensures these technical specifications are executed with precision.
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.