Ontario Building Code Practice Exam

Question: 1 / 400

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

Non-combustible materials

Labeled with a fire rating

Continuous from wall to wall

Minimum thickness of 75 mm

A fire-rated ceiling assembly in a residential building must include non-combustible materials, be labeled with a fire rating, and be continuous from wall to wall. The minimum thickness requirement of 75 mm is not a requirement for a fire-rated ceiling assembly in a residential building. This option may seem like a plausible requirement, but it is not explicitly stated or required by fire safety regulations or building codes. As such, it is not a correct requirement for a fire-rated ceiling assembly in a residential building.

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