The "Mass Summary by Story" table is more than just a data output; it is a vital diagnostic and design tool. By understanding how to define your mass source, where to find the table, and how to interpret its data, you can ensure your seismic loads are applied correctly, your building's dynamic properties are accurately captured, and your design is compliant with relevant codes. Checking this data should be a standard step in the quality assurance process of every ETABS project.
) of the building is the sum of the masses across all stories multiplied by gravity ( etabs mass summary by story
The resulting table provides a clear breakdown, usually organized from the highest story down to the base. Setting Up the "Mass Source" Correctly The "Mass Summary by Story" table is more
Expected $5 \times 600 = 3000 \text kN$. Error = 0.07% → Acceptable. ) of the building is the sum of