This load combination is intended for checking the strength limit state with applied seismic and live loads. This load combination is taken from IBC 2000 section 1605.2.1. The load factors used are:

Hyperstatic Loading: 1.0 (std & alt)

Dead Loading: 1.2 (std) & 0.9 (alt)

Live (Reducible) Loading: 0.5 (std) & 0.0 (alt)

Live (Unreducible) Loading: 1.0 (std) & 0.0 (alt)

Live (Storage) Loading: 1.0 (std) & 0.0 (alt)

Live (Parking) Loading: 1.0 (std) & 0.0 (alt)

Snow Loading: 0.7 (std) & 0.0 (alt)

Ultimate Seismic Loading: 1.0 (std & alt)