PART 4 – Seismic Design Provisions of ASCE 7-22

Part 4: Chapter 14 – 15: Seismic Design of Nonbuilding Structures and Material Specific Requirements

ASCE 7-22 is adopted by the 2024 IBC, which will be published later this year. The changes from ASCE 7-16 to ASCE 7-22 are so numerous and so substantive that learning about them needs to start now. The chapter on flood loads is the only chapter that has escaped any change. There are huge changes in snow load, ice load, and tsunami load provisions. There is a whole new chapter (32) on tornado loads. Risk Category III or IV structures located in the tornado-prone region shown in a figure are required to be designed and constructed to resist the greater of the tornado loads determined in accordance with Chapter 32 or the wind loads determined in accordance with Chapters 26 through 31. The changes in Chapters 11-23 on earthquake loads and Chapters 26-31 on wind loads are many and many of the seismic changes mark significant departures from past practice. ASCE 7-22 load combinations and importance factors are also quite different because of changes in the loads chapters.

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