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?

Non-combustible materials
Labeled with a fire rating
Continuous from wall to wall
Minimum thickness of 75 mm

The correct answer is: Minimum thickness of 75 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. The minimum thickness requirement of 75mm is incorrect because there is no specific minimum thickness for a fire-rated assembly in a residential building. This may confuse some individuals, but it is important to remember that non-combustible materials, a fire rating label, and a continuous design are the main requirements for a fire-rated floor-ceiling assembly in a residential building.