Etabs Mass Summary By Story

A typical output table includes the following columns (Units: kg, N-s²/m, or kip-s²/in):

: Confirm that the mass decreases or changes logically from the roof down to the base. etabs mass summary by story

: The translational mass of the floor in the global X and Y directions. A typical output table includes the following columns

These should generally be equal unless you have strange property modifiers. This represents the total translational mass per floor. how ETABS calculates it

This article will dissect the ETABS Mass Summary by Story. We will cover what it is, how ETABS calculates it, how to interpret every column of the output, common sources of error, and how to troubleshoot discrepancies.

If a story shows a mass significantly higher or lower than expected, it’s a red flag. Common culprits include: