Concrete Frame Design With Two Different Spans at Lateral Forces

[MihaiValea]

Hello,
I have to design a concrete frame building that has one frame with two significat different spans, one of 9 meteres and one just 2.7 meters.
My problem is that when I check the columns at lateral forces (seismic combination) in X direction one column has compression axial force and the other has tension axial force, and in -X (opposite direction) the columns have stresses the other way around.
Is there a way to avoid this situation or do I have to design the concrete columns for tension in that direction, and in compression in the other direction?
Thank you very much.

Mihai Valea

 

[jayrod12]

That analysis is correct. You must design for both directions. Which would result in each column requiring compression and tension resistance to exceed the demand.

 

[MihaiValea]

Thank you very much for the reply.
I have done the checks on both tension and compression.
Have a nice day!