Ontario Building Code Practice Exam

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Which of the following is not required for a fire-rated glazing assembly in a high-rise building?

  1. Labeled with a fire rating

  2. Non-combustible framing

  3. Minimum thickness of 12 mm

  4. Continuous from floor to underside of roof sheathing

The correct answer is: Minimum thickness of 12 mm

A minimum thickness of 12 mm is not required for a fire-rated glazing assembly in a high-rise building because the thickness requirement may vary depending on the specific type of glazing and fire rating needed for the assembly. Options A, B, and D are important requirements because a fire-rated glazing assembly should have a proper fire rating label, non-combustible framing, and be continuous from floor to underside of roof sheathing to ensure proper fire safety in a high-rise building. However, the minimum thickness of the glazing is not a specific requirement as it may vary based on the fire rating and other factors.

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