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This setting allows you to select between the following Design Code options:
IBC 2024 (NDS 2024, ASCE 7 2022)
IBC 2021 (NDS 2018, ASCE 7 2016)
When the first of these is selected, the program complies with the 2024 ICC International Building Code, and uses design provisions from the 2024 ANSI/AWC National Design Specification for Wood Construction, and provides the load types and generates load combinations per the 2022 ASCE/SEI 7 Minimum Design Loads for Buildings and Other Structures. IBC references NDS 2024 and ASCE 7-22.
The default choice when new files are created is IBC 2024 (NDS 2024, ASCE 7 2022) . The default selection for existing files made with versions before Sizer 13.2 is IBC 2021 (NDS 2018, ASCE 7 2016) This is because the snow loads will have been calculated using the ground snow load specified in ASCE 7-16, and load combinations from ASCE 7-22 would not be appropriate.