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Don’t Forget! You Saw it in the
August 2024 #16301 Page #100
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2024 IBC Significant Structural Changes — Loads This article appears in the April 2024 issue of STRUCTURE Magazine as Part 6 of 9.
By John “Buddy” Showalter, PE and Sandra Hyde, PE
his multi-part series discusses significant structural changes to the 2024 International Building Code (IBC) by the International Code Council (ICC). This article includes an overview of changes to IBC Chapter 16 for environmental loads including snow, rain, wind, tornado, and earthquake. Only a portion of the chapter’s total number of code changes is discussed in this article. More information on the code changes can be found in the 2024 Significant Changes to the International Building Code available from ICC (Figure 1).
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ASCE 7-22 and Hazard Tool ASCE/SEI 7-22 Minimum Design Loads and Associated Criteria for Buildings and Other Structures includes a significant number of revisions for nearly all environmental loads. Changes throughout the 2024 IBC, most significantly in IBC Chapter 16, match changes to ASCE 7. To easily determine new environmental loads based on location and risk category, use the ASCE Hazard Tool (asce7hazardtool. online) – a free resource.
Figure 1. More information on the code changes can be found in the 2024 Significant Changes in the IBC available from ICC.
Snow Loads New ground snow load (GSL) maps based on ASCE 7-22 are included in the IBC and are now based on the risk category of the building (Figure 2). 1608.2 Ground snow loads. The ground snow loads to be used in determining the design snow loads for roofs shall be determined in accordance with the reliability-targeted (strength-based) ground snow load values in Chapter 7 of ASCE 7 or Figures 1608.2(1) and through 1608.2(24) for the contiguous United States and Table 1608.2 for Alaska. Sitespecific case studies shall be determined in accordance with Chapter 7 of ASCE 7
and shall be approved by the building official. made in areas designated “CS” PHONE: 800-289-5627
Figure 2. Ground snow loads (psf) for Risk Category III buildings.
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