In many modes starting from first mode (1.209 Hz) of seismic analysis of steel structure .. I am seeing structure top frame is disconnecting from its column support.
whether this means the structure is failing in seismic case ???
I just started working on seismic analysis , so pls. help me to understand the concept.I have attached the mode shape picture for referenceImage may be NSFW.
Clik here to view.
