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A paragraph in Annex A stated that when signage was required by code to be attached to a fire door (example: for a delayed egress lock), and there was no other option but to put the sign on the glazing, it should be fire-resistance-rated glazing that had been evaluated for temperature rise on the unexposed surface. However, the 20 editions specified that signs could not be installed on fire-protection-rated glazing, which indicated that signage would be allowed on fire-resistance-rated glazing. This is consistent with the 2007, 2010, and 2013 editions of NFPA 80. One more interesting change is the paragraph stating that signs shall not be installed on glazing in fire doors. I predict that we’re going to see a lot more metal signs on fire doors in the future, as I would interpret the new language to mean that signs of other materials must still be attached with adhesive. size #8 or up to 0.17 inch – I’m assuming diameter) IF the screws are used to attach metal signs and if they penetrate one side of the fire door. The 2022 edition allows adhesive OR up to 4 steel or stainless steel fasteners (sheet metal screws up to U.S.

Past editions of the standard required signage to be attached to fire doors with adhesive, and specifically prohibited the use of screws or nails. The allowable means of attachment have also changed. Metal signage up to 20 gage thickness may be up to 200 square inches in area – for a 3070 door, a sign of this size would be almost 7% of the 21-square-foot area of the door face.

If the signage is painted on with stencils or similar methods, the size is not limited. The 2022 edition includes the same limitation of 5% but specifies that the limit applies to signage made from combustible materials or from vinyl up to 0.008 inches (2 mm) thick. Moving on to the size…prior to the 2022 edition, the total area of all attached signs could not exceed 5% of the area of the face of the door – regardless of what material the sign was made of. Informational signage is allowed on fire doors as described in NFPA 80 or by the manufacturer’s published listings – no change there. Can you spot the changes in the section addressing signage? Spoiler Alert: I’ve itemized them below.

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Note: You can buy a copy of the standard, access it using NFPA Link, or read the free online version on NFPA’s website. That’s the case with a change to the 2022 edition of NFPA 80 – Standard for Fire Doors and Other Opening Protectives. But sometimes there is a requirement that I’ve been teaching about for 20+ years, and a change means that eventually you will all have to re-learn what you previously knew. The frequent updates help the requirements keep pace with current technology as well as newly-identified threats. ®Copyright 2004 - 2023 MuralSuperstore.I appreciate the code development process and the resulting changes made to the codes and standards that apply to door openings. International law, against which legal action will be taken. Intellectual property rights is a violation of national and Reproduced in whole or in part without permission of the Property law and may not be distributed, modified, Protected by national and international intellectual Information contained in this web site are copyright

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