When to release and not to release moment on members?

[sheick03]

Hi. I am an Etabs newbie, just want to know when and when not to release moment in beam?..Can somebody help me about seismic design on a 4-Storey RC Bldg..What steps should i follow?when to used EQx,EQy..

 

[rscassar]

If the beam is designed to allow rotation at the support then you should release the end fixity. The only application I have come accross this in concrete design is the precast units which are supported on bearings or a corbel type detail.