перейти к содержанию Mass summary matches hand calculation. Modal analysis can proceed.
Understanding Mass Summary by Story in ETABS In structural engineering, the Mass Summary by Story etabs mass summary by story
In ETABS, a popular software for structural analysis and design, the "Mass Summary by Story" feature provides a detailed report of the mass distribution of a building model, broken down by story (or floor). Mass summary matches hand calculation
In a dynamic analysis, ETABS calculates the participation factors based on this mass. A critical check involves verifying that the modal participation mass ratios sum to near 100% ( In a dynamic analysis, ETABS calculates the participation
The name of the floor level defined in your story data.
After running modal analysis, ETABS provides "Modal Participating Mass Ratios." For a valid model, the sum of modal mass ratios in the X and Y directions must exceed 90% of the total mass from the Mass Summary. If not, the analyst must add more modes.
