National Building Code Standards for Group F Division 2 Industrial Buildings

Understanding the National Building Code of Canada is essential for ensuring the safety and compliance of industrial projects. At empcontracting.ca Inc. your construction contractor in London, Ontario, we specialize in high-hazard and medium-hazard industrial builds that strictly adhere to Division B standards for Group F, Division 2 occupancies.

Understanding Group F, Division 2 Classifications

Group F, Division 2 classifications apply to medium-hazard industrial occupancies. The code provides rigorous frameworks for building height, area, and fire-resistance ratings to mitigate risks in industrial environments.

Standards for Buildings up to 3 Storeys (Article 3.2.2.78)

According to Article 3.2.2.78, buildings classified under this group are permitted to be constructed using combustible or noncombustible materials, provided they meet specific fire-safety criteria:

• Maximum Building Area: The permitted area varies based on the number of storeys and street access, capped at 1,500 m² for buildings with three-street frontage.
• Fire-Resistance Ratings: Floor assemblies and mezzanines must act as fire separations with a rating of at least 45 minutes.
• Roofing Requirements: Roof assemblies generally require a 45-minute fire-resistance rating, although 1-storey buildings may utilize fire-retardant-treated wood systems as per Article 3.1.14.1.
• Structural Support: Loadbearing walls and columns must provide a minimum 45-minute fire-resistance rating or be of noncombustible construction.

Requirements for Sprinklered Buildings up to 4 Storeys (Article 3.2.2.79)

For larger industrial facilities, Article 3.2.2.79 mandates that buildings up to 4 storeys must be sprinklered and constructed using noncombustible materials. The area limitations are strictly enforced based on building height:

• 1 Storey: Up to 9,600 m²
• 2 Storeys: Up to 4,800 m²
• 3 Storeys: Up to 3,200 m²
• 4 Storeys: Up to 2,400 m²

In these sprinklered configurations, floor assemblies and mezzanines require a higher fire-resistance rating of at least 1 hour. All loadbearing components must match the rating of the assemblies they support to ensure structural integrity during a fire event.

Consult with Your London, Ontario Industrial Experts

Navigating fire-resistance ratings and building area limitations requires professional expertise. For your next industrial project, partner with empcontracting.ca Inc. your construction contractor in London, Ontario. We ensure your facility meets all Canadian building codes while maintaining the highest standards of structural performance.