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  • 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. Thus, for the moderately ductile level limit values ​​are higher.

  • 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.

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