For a permanent building, you check:
: Portable equipment that is not permanently attached to the building and weighs less than 400 lbs (1,780 N) may be exempt from seismic requirements in lower Seismic Design Categories (SDC). asce 7 22 portable
This is the heart of the matter. A portable structure behaves differently than a permanent building because it has gaps, tow bars, exposed chassis, and—critically—no rigid connection to the earth. For a permanent building, you check: : Portable
: ASCE 7-22 uses updated wind speed maps with more accurate meteorological data. It is now the basis for regional codes like the Florida Building Code 2023 Major Flood Load Updates : ASCE 7-22 uses updated wind speed maps
Most portable structures fall under Risk Category I (temporary, low‑occupancy). For facilities that will be occupied by large numbers of people—such as temporary event grandstands—Risk Category III may be required.
Engineers use ASCE 7-22 to ensure that buildings can withstand extreme conditions without catastrophic failure. By adopting these standards, local jurisdictions align their construction requirements with the latest scientific research, protecting public health, safety, and welfare. American Society of Civil Engineers (ASCE) specific chapter
ASCE 7-22 introduces based on updated maps (incorporating the 2018 NSHMP model). For portable structures: