These represent the total mass considered for horizontal motion in the X and Y directions. In most cases, these values are identical unless you have assigned specific directional mass properties.
When you open the table, you will see several key headings. Understanding these is vital for an accurate peer review or design check: The specific level of the building. etabs mass summary by story
Analysis Results > Structure Results > Mass Summary > Mass Summary by Story 2. Understanding the Columns These represent the total mass considered for horizontal
. Double-check that your Mass Source definition reflects your local code. etabs mass summary by story