OBC Hazard Index Table 11.2.1.1.-M: Group F Division 2 Industrial Occupancy Guidelines
Sarah's Expert Insight
OBC Compliance Specialist
"Understanding the Hazard Index is critical when repurposing industrial spaces in London or Muskoka, as it dictates the level of fire protection required under Part 11 of the OBC. At empcontracting.ca Inc., your construction contractor in London, Ontario, we ensure that changes in occupancy size—especially for high fire-load facilities like bakeries or laboratories—meet these stringent safety benchmarks to avoid costly retrofitting or permit delays."
When navigating the 2024 Ontario Building Code (OBC) for industrial projects, understanding the Hazard Index (H.I.) is essential for compliance during renovations or changes of use. As empcontracting.ca Inc. your construction contractor in London, Ontario, we utilize Table 11.2.1.1.-M to assess the safety requirements for Group F Division 2 occupancies.
Hazard Index Classification for Medium Industrial Occupancies
The Hazard Index categorized under Table 11.2.1.1.-M classifies various industrial operations based on their size (Small, Medium, or Large) and their inherent fire risk. This classification directly influences the structural and fire protection upgrades required for your facility.
Specific Occupancy Risk Ratings
Below is a summary of the H.I. values for common Group F Division 2 occupancies:
- High Fire Load Facilities: Factories, Laboratories, and Freight Depots carry high Hazard Indices (ranging from 3 to 6), requiring robust safety measures.
- Cold Storage Plants: Risk levels vary significantly based on insulation type and refrigerant flammability. Noncombustible materials can lower the H.I. to 2, whereas combustible insulation combined with flammable refrigerants can peak at an H.I. of 7.
- Specialized Services: Aircraft Hangars and Body Shops are consistently rated at high risk (3 to 6) due to the presence of volatile materials and large open floor plans.
Whether you are retrofitting an old bakery or establishing a new electrical substation, empcontracting.ca Inc. your construction contractor in London, Ontario, ensures your project adheres to these critical OBC standards to maximize safety and regulatory approval.
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.