Canadian building code question

What are the building code requirements for libraries and museums in Canada?

Libraries and museums are typically classified as Group A, Division 2 assembly occupancies, which triggers requirements for occupant load, exiting, fire protection, and accessibility. Collection storage areas may be classified differently and require higher floor live loads and specific fire suppression provisions.

Libraries and museums combine public assembly spaces with specialized collection storage and exhibit areas. The code treats the public areas as assembly occupancy while storage and archive areas may have different occupancy classifications and fire protection requirements. Floor live loads for stack areas and collection storage can be significantly higher than standard office or assembly loads.

What to check first

  • Classify the public areas as assembly occupancy and determine the occupant load for reading rooms, galleries, and event spaces.
  • Check the floor live load requirements for book stacks, collection storage, and archive areas, which are significantly higher than standard assembly loads.
  • Verify fire protection requirements, including whether the collection storage areas require sprinklers, special suppression, or enhanced fire separations.

Jurisdiction notes

National baseline

The NBC classifies public library and museum spaces as assembly occupancies. Stack and storage areas may have different occupancy classifications and require higher structural loads.

Collection protection

While not a code requirement, many libraries and museums require special fire suppression systems (clean agent, water mist) for irreplaceable collections. The authority having jurisdiction may impose these conditions.

Accessibility

Libraries and museums must meet barrier-free access requirements as public assembly spaces, including accessible entrances, washrooms, circulation paths, and seating or viewing areas.

Work through it in this order

  1. Classify each area of the building by occupancy: assembly for public spaces, storage or business for back-of-house areas.
  2. Calculate occupant loads for public areas and determine exit requirements based on the aggregate load.
  3. Specify floor live loads for stack areas, compact shelving, and collection storage per the NBC structural tables.
  4. Design fire protection to meet code requirements and any additional collection-protection measures required by the client or authority.

Common questions

What floor load is required for library book stacks?

Library stack areas typically require 7.2 kPa or higher depending on the shelving type. Compact mobile shelving can require even higher loads. Check the NBC structural loading tables for the specific use.

Do museums need sprinkler systems?

Sprinkler requirements depend on the building area, height, and construction type as for any assembly occupancy. The authority having jurisdiction may also require specific suppression systems for collection protection.

How is the occupant load calculated for a museum gallery?

Gallery spaces typically use a standing or exhibition occupant load factor. The exact factor depends on whether the space has fixed exhibits, open floor area, or mixed conditions.