9.3.1.1
Columns and beams of the moment-resisting frames with high ductility level are automatically checked and reported according to Table 9.3.
The cross-sections used for the columns and beams of the moment-resisting frames must not undergo local buckling and must be compact enough to provide certain ductility capacity.
Local buckling must be prevented for horizontal load-bearing system elements to perform sufficient plastic deformation under earthquake effects. For this purpose, the width-to-thickness ratios of elements must be satisfied according to the conditions given in Table 9.3.
![](../__attachments/1090683170/moment93.png?inst-v=5c738f36-5d0a-4235-b600-0cef56c14e9d)
Since the plastic deformation capacity of systems with high ductility level should be relatively higher, the limit values are smaller.
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