: By default, ETABS lumps mass at story levels by taking half the weight from the story above and half from the story below. You can explicitly enable "Lump Lateral Mass at Story Levels" in the Mass Source definition to simplify the model into a multiple degree-of-freedom system.
The specific steps may vary depending on the version of ETABS you are using. Always refer to the software's user manual or online support for detailed instructions. etabs mass summary by story
The Mass Summary by Story report in ETABS summarizes the mass properties of a building model, including: : By default, ETABS lumps mass at story
If you want, I can produce:
Here's what it entails:
This feature is useful for:
ETABS usually focuses on horizontal inertia for seismic runs. : By default