When you use ETABS for high-rise or complex structures, simply looking at the total mass isn't enough. You need to ensure the distribution aligns with the structural intent. Why Mass Summary by Story Matters
Check if you applied property modifiers (like 0.0 weight) to certain elements.
Mass moments of inertia; critical for capturing torsional effects. etabs mass summary by story better
Seismic forces are calculated based on mass. If your story mass is off, your base shear and lateral forces will be incorrect. This table allows you to: Verify the self-weight of slabs, beams, and columns.
Check if superimposed dead loads (SIDL) are applied correctly. When you use ETABS for high-rise or complex
Typically, use 1.0 for Dead/SIDL and 0.25 for Live Load (depending on your local building code).
Cumulative mass from the top down; used to check total building weight. Mass moments of inertia; critical for capturing torsional
If you'd like to dive deeper into the technical side, I can help you with: The for mass source. How to export this data to Excel for faster reporting.
