Building fundamental modes in ETABS
Building fundamental modes in ETABS
(OP)
By experience and to verify my model of 10 story building in Seismic zone 2B, what should mode 1, 2,3 look like? The building foot print is rectangular about 35*20m, with distributed sheer walls. How long should the period be?






RE: Building fundamental modes in ETABS
RE: Building fundamental modes in ETABS
RE: Building fundamental modes in ETABS
- You should use rigid diaphragm
RE: Building fundamental modes in ETABS
RE: Building fundamental modes in ETABS
Also note, semi-rigid is more 'realistic' but thats only if the diaphragm properties are defined properly for the program to use.
If you are not 100% sure, you can run it both ways and use the worst case for your design.