Seismic Modelling in STAAD
Seismic Modelling in STAAD
(OP)
Could all staad user help me on how to input data for seismic modelling of a space frame? I could not find how to input storey-wise masses and location of centre of mass which are normally required in other structural engineering program.






RE: Seismic Modelling in STAAD
I encourage you to look at the space frame as two planar frames first to understand the dynamics of the structure in the long. and transv. directions. This may be done with staad or with simple MDOF techniques. Then put it all together to understand and predict the behavior in 3D with the subsequent torsional modes etc.
RE: Seismic Modelling in STAAD
Or you can calculate the seismic loads manually and apply them as joint loads