Sentence 9.24.2.4.(3)

Intent 1:

To limit the probability of inadequate side support for the frames of rated doors, which could lead to an inadequate resistance to forces exerted by the warping of rated doors under fire loads, which could lead to:

• the opening of such doors, or
• the opening of gaps between such doors and their frames.

This is to limit the probability of compromised fire resistance of the assembly, which could lead to harm to persons.