Ontario Building Code Practice Exam

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Which of the following is not a requirement for a fire-rated floor-ceiling assembly in a residential building?

  1. Non-combustible materials

  2. Labeled with a fire rating

  3. Continuous from wall to wall

  4. Minimum thickness of 100 mm

The correct answer is: Minimum thickness of 100 mm

A fire-rated floor-ceiling assembly in a residential building must have non-combustible materials, be labeled with a fire rating, and be continuous from wall to wall. However, a minimum thickness of 100 mm is not a specific requirement for a fire-rated assembly. This may vary depending on the design and construction of the building. Therefore, option D is not a necessary requirement for a fire-rated floor-ceiling assembly in a residential building.

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