Etabs Mass Summary By Story ^new^ Jun 2026

Below is a drafted report structure for presenting this data. Structural Mass Summary Report 1. Project Overview ETABS 2026 Model Status: Analysis Completed Mass Source: Defined as [e.g., Self Mass + 25% Live Load] 2. Mass Source Definition

This is the rotational mass (polar moment of inertia) about each axis. etabs mass summary by story

Sometimes shown as UX Mass , UY Mass . This confirms the directional mass used for base shear calculation. Below is a drafted report structure for presenting this data

Modern codes often require the consideration of rotational mass moment of inertia ($J_mass$), particularly for flexible or semi-rigid diaphragms. The Mass Summary table provides the rotational mass about the vertical axis passing through the center of mass. etabs mass summary by story