ASCE 7-22 relies heavily on exact digital geodatabases for site-specific hazards (wind, seismic, snow). A portable building might comply with the digital hazards of one county but fail in another.
For the first time, ASCE 7-22 introduces an entirely new chapter dedicating design criteria to tornado hazards. Structures located in tornado-prone regions must be evaluated for tornado loads if they meet specific criteria: Classified as Risk Category III or IV.
