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

  1. Labeled with a fire rating

  2. Non-combustible framing

  3. Minimum thickness of 6 mm

  4. Continuous from floor to underside of roof sheathing

The correct answer is: Minimum thickness of 6 mm

For a fire-rated glazing assembly in a commercial building, it is important to have a fire rating label, non-combustible framing, and a continuous installation from the floor to the underside of roof sheathing. These requirements ensure that the glazing can withstand and contain a fire. However, the minimum thickness of 6 mm is not a requirement, as long as the glazing meets the other requirements.