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3hr HM Door and Frame in Wood Construction

Question asked by dmacpherson on Jul 9, 2019
Latest reply on Jul 17, 2019 by dmacpherson

I am looking for standards related to NFPA 80 (ideally NFPA or UL Designs) for 3-hour rated hollow metal doors and frames built into wood construction. We have been using ASW 2600 by the Gypsum Association together with two 3 hour wood framed walls (essentially 3 walls stacked together) using break away clips to allow each outside wall to collapse independently in a fire event. Overall the wall assembly is 15 to 18 inches thick.  I am updating the specification requirements for the hollow metal frames and door hardware. Most HM frame manufacturer information is for CMU walls, not wood. Any assistance is greatly appreciated. Thank you

 nfpa80

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