Etabs Mass Summary By Story Info

Analysis Results > Structure Results > Mass Summary > Mass Summary by Story 2. Understanding the Columns

If your "Mass Source" (Define > Mass Source) is set to include "Element Self Mass" AND "Loads," but you’ve also manually assigned mass, you might be double-counting.

. Double-check that your Mass Source definition reflects your local code. etabs mass summary by story

The sum of the mass of the current story plus all stories above it. This is useful for checking the total "weight" of the building at any level.

Whether you are checking for modeling errors or prepping data for base shear calculations, here is everything you need to know about the Mass Summary by Story table. 1. How to Access the Mass Summary Table Analysis Results > Structure Results > Mass Summary

The geometric coordinates where the story mass is concentrated.

Accidental double-modeling of slabs or beams. Double-check that your Mass Source definition reflects your

In ETABS, the is one of the most critical outputs for structural engineers. It provides a concise breakdown of how weight is distributed across the height of a building—a factor that directly dictates seismic forces and dynamic behavior.

A quick glance at the cumulative mass helps verify if you are working in kips, tons, or kilograms. C. Calculating Eccentricity

, the total mass in your ETABS summary (multiplied by gravity) should match your hand-calculated dead loads and applicable live load percentages. B. Spotting Modeling Errors