Ontario Building Code Practice Exam

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

Non-combustible frame
Self-closing device
Labeled with a fire rating
Minimum height of 2.1 meters

The correct answer is: Minimum height of 2.1 meters

Fire-rated door assemblies in commercial buildings are required to have a non-combustible frame, a self-closing device, and be labeled with a fire rating. These requirements are in place to ensure that the door can effectively contain a fire and prevent it from spreading to other areas. Minimum height is not a requirement for fire-rated doors as they can vary in size, but the other options are necessary for the proper function of a fire-rated door.