The 2024 International Codes® (I-Codes®) have undergone
substantial formatting changes as part of the digital transformation strategy
of the International Code Council® (ICC®) to improve the user experience. The
changes, promoting a cleaner, more modern look and enhancing readability and
sustainability, include:

• Single
      column text format and modernized font styles improves readability
  


• QR Codes
      replace vertical margin sidebars and arrows to identify code changes more
      accurately
  


• Shading
      for table headers and notes improves locating tables and applicable notes
  


• Grouping
      of associated content brings tables and figures immediately after the
      parent section
  


• Users
      have capability to validate authenticity of their book and register it
      with the ICC to receive incentives.
  

The 2024 IBC® applies to all buildings except detached one-
and two-family dwellings and townhouses up to three stories. The 2024 IBC® contains
many important changes such as:

• Duties
      and powers of the building official: an overall reformat of Section 104
      regulating duties of the building official, the approach for reviewing for
      code compliance has been significantly updated to reflect the current
      manner that alternate materials, designs and methods are evaluated.
  


• For
      the first time ever, the 2024 IBC includes provisions for tornado
      loadings.
  


• Updated
      wind, earthquake, and snow loads.
  


• The
      updated design rain loads are now based on the summation of the static
      head, the hydraulic head, and the ponding head.
  


• Updates
      to Risk Categories including Photovoltaic (PV) panel systems and
      facilities providing power generation.
  


• Updated
      and expanded provisions for Temporary Structures.
  


• New
      provisions regarding the wind resistance of aggregate-surfaced roofs.
  


• Roof
      Coverings: Updated provisions for underlayment.
  


• New
      special inspection provisions for metal building systems.
  


• New
      provisions for structural concrete reinforced with glass-fiber
      reinforcement.
  


• Concrete:
      To improve ease of use, Chapter 19 on Concrete has been Updated and
      reformatted.
  


• Masonry:
      TMS 402 and TMS 602 references have been updated to the latest 2022
      editions.
  


• An
      increase in the allowable height of a Group R-2 occupancy building with a
      NFPA 13R sprinkler system.
  


• Occupiable
      space requirements now apply if a roof is usable for anything more than
      maintenance or repair and occupants must have access to multiple egress
      options from a story based on the occupant load and the story
      requirements.
  


• Adult
      changing tables are now regulated where they are provided and are also
      required in large assembly and mercantile, college lecture hall/classroom
      buildings and highway rest stops.
  


• Fire-resistance-rated
      Wall Continuity: Updates on how supporting construction for exterior walls
      is to be fire-resistance-rated, especially in the case of a parapet.
  


• Openings
      in Shaft Enclosures: Additional exceptions are provided for shaft
      enclosures, including new allowances for openings and penetrations.
  


• Carbon
      Monoxide Detection: Carbon monoxide (CO) detection is now required in all
      occupancies where a CO-producing device is present. Detection and
      notification can be addressed in several ways.
  


• Vapor
      retarders: Several updates have been made to the vapor retarder provisions
      for consistency with the IRC and IECC. The changes also provide additional
      options and better guidance for allowable types and locations of permitted
      vapor retarders.
  


• Vertical
      and lateral Flame propagation compliance methods: Clarification has been
      provided as to when testing in accordance with NFPA 285, related to
      vertical and lateral flame propagation, is required. Previously this
      information was scattered in a variety of locations within Chapters 14 and
      26.
  


• New
      Appendix P sets forth the scoping limitations and technical criteria for
      sleeping lofts that are provided within Group R dwelling units and
      sleeping units.