The 2021 IBC no longer allows the use of fire-retardant-treated wood sheathing for 2-hour non-bearing partitions in Group I-2 or Group B Ambulatory Care Facilities.

The 2021 IBC now requires any attachment to fire-rated steel members to be rated at least 12 inches away from the structural member.

The IBC 2021 requires frost protection at exterior landings for all required exits with outward-swinging doors to ensure the exit door will be unobstructed.

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The 2021 IBC adds the following criteria for a Risk Category 3 structure:

• Multiple assembly spaces, each exceeding 300 occupants and combined occupants over 2,500
• Day Care Facilities are added to Group E and Risk Category III if occupant load exceeds 250

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