to each floor and check the "Calculate Diaphragm Center of Rigidity" option in the analysis settings.
If ETABS reports total mass = 100,000 N·s²/m, then $W = 100,000 \times 9.81 = 981,000 N = 981 kN$. This must match the sum of dead load plus applicable live load per ASCE 7.
When you open the table, you will see several columns. Understanding these is vital for a precise seismic analysis:
to each floor and check the "Calculate Diaphragm Center of Rigidity" option in the analysis settings.
If ETABS reports total mass = 100,000 N·s²/m, then $W = 100,000 \times 9.81 = 981,000 N = 981 kN$. This must match the sum of dead load plus applicable live load per ASCE 7. etabs mass summary by story
When you open the table, you will see several columns. Understanding these is vital for a precise seismic analysis: to each floor and check the "Calculate Diaphragm