: Updated geodatabases provide more granular data for the contiguous U.S., potentially increasing design pressures in regions previously considered lower-risk. 2. Transition to Strength-Level Snow Loads
: New, elaborate provisions have been introduced for elevated structures. Since many portable units sit on chassis or temporary piers, these "elevated" criteria now dictate more precise Main Wind Force Resisting System (MWFRS) and Components and Cladding (C&C) calculations. Directionality Factor ( Kdcap K sub d ) : The wind directionality factor Kdcap K sub d has been moved from the velocity pressure equation ( asce 7 22 portable
For portable buildings deployed in northern climates, ASCE 7-22 changes the fundamental nature of snow design. : Updated geodatabases provide more granular data for
: Ground snow loads are now based on "reliability-targeted" values rather than a simple 50-year mean recurrence interval. Thermal Factor ( Ctcap C sub t Since many portable units sit on chassis or
) directly into the individual pressure and force equations. This ensures that structures with multiple shapes (common in modular clusters) are evaluated with the correct Kdcap K sub d for each component.