I was trying to model a 3D building in the SeismoStruct platform. The actual RC building has staircase in a corner region. Now my question is how can I model that staircase or can account the effect of the staircase during my analysis. Since I will be modelling only the stair slab so, I hope the element class will be same as regular slab. Note that the slab in this case will be inclined. Thanks in advance for all those who are going to contribute by answering my question.
You must model it as shell elements if not even solid elements. The elements must be inclined. Also, perform a modal analysis first to determine the mode shapes and the corresponding frequencies to calculate the damping coefficients before performing a time-history dynamic analysis.
Thank you very much for your reply. In case of SeismoStruct the slab elements are modeled as rigid diaphragm and "shell elements" are not explicitly available in SeismoStruct. However, what if I would like to ignore the presence of stair case for the simplification of the model? Is there any way to compensate the effect of having a stair case?
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