Can a rated door be undercut in a 2 hour rated wall assembly? If so what is the maximum?
I have reviewed NFPA 80 and cannot find any allowance for this. please advise
It is in a weird place under Section 4.8 Supporting Construction of Chapter 4 General Requirements.
Excerpt from 2016 NFPA 80:
Thank you. I read this and was unsure.
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