Because a portable structure is not bolted to a concrete slab, ASCE 7-22 introduces a . If your portable unit uses:

[ p = q_h \cdot (GC_p) - q_h \cdot (GC_pi) ] Where:

standard, titled "Minimum Design Loads and Associated Criteria for Buildings and Other Structures,"

Inside a portable building, everything moves: server racks, lockers, medical equipment, and furniture. ASCE 7-22 Section 13.2.1 now requires that portable structures with casters or wheels have all internal components independently braced for ( F_p = 0.6 S_DS W_p ) (up from 0.4 in 7-16). This is a 50% increase in internal bracing loads.

"DESIGNED IN ACCORDANCE WITH ASCE 7-22. MAXIMUM ALLOWABLE WIND SPEED: 120 MPH (ULT), EXPOSURE C. RISK CATEGORY II. MAXIMUM ROOF SNOW LOAD: 30 PSF. SEISMIC DESIGN CATEGORY C. THIS UNIT REQUIRES X SCREW ANCHORS AT Y SPACING."