Etabs Mass Summary By Story Jun 2026

Building codes (ASCE 7, IBC, Eurocode 8, IS 1893) require the seismic weight (W) to calculate the base shear ( V = Cs * W ). If your Mass Summary shows an inconsistent total weight—say, you forgot to include partition loads or a heavy mechanical unit on the roof—your seismic forces will be dangerously wrong.

The table typically displays the following values for each defined story: : The specific level of the building being reported. etabs mass summary by story