Seismic analysis, tall-building rules and ETABS's own design results — checked against IS 1893 and IS 16700.

Seismic analysis to IS 1893

Base shear, fundamental period, storey drift, response-spectrum scaling, modal mass, and the stiffness, mass and torsional irregularities — read from your completed ETABS analysis and checked against IS 1893.

Tall-building limits to IS 16700

For buildings 50 m and taller: the period cap, wind and total drift, slenderness, plan aspect ratio, the stability coefficient and the other IS 16700 limits.

The model, and ETABS's own design results

Load patterns, combinations, the seismic mass source, diaphragms, materials and section sizes are checked before any result is trusted — and every member ETABS's own design run reports as failing is listed, as ETABS reported it.