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Allowable Exit Passageway Openings

M

Mech

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Joined
Oct 30, 2009
Messages
1,060
Location
Eastern PA
2018 IBC w/ NC amendments

Are windows permitted on an interior wall of an exit passageway? The way I read section 1024.5, the answer is no. When I read the commentary, it appears that window assemblies tested as wall assemblies are be permitted.

View attachment 16496

Thanks
 
You are correct. Fire-protection-rated openings are not permitted. Fire-resistance-rated glazed assemblies that are tested in accordance with ASTM E119 or UL 263 are not considered "openings"--they are essentially "transparent walls."
 
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