Etabs Mass Summary By Story Better -

In ETABS, the Mass Summary by Story table is a critical output that aggregates the total mass and weight at each level, forming the basis for seismic and dynamic analysis. Overview of Mass Summary

Reporting recommendations (for your article)

• Include screenshot of the ETABS Story Mass Summary table and a short exported CSV snippet.
• Provide a small sample table showing Mass X, Mass Y, Total, and Cumulative % for 5–10 stories.
• Add a short checklist: confirm load patterns, run modal analysis, verify diaphragm modeling, export and verify totals.

• Subtracts diaphragm overlap mass (manual—use Display > Show Forces/Stresses > Shell > Mass to verify distribution).
• Breaks down mass by load pattern (Dead vs Live vs Snow).
• Calculates cumulative seismic weight from top down (required for base shear distribution).

Mass X & Mass Y: The translational mass in global directions.