Cross The cross-sections used in for the columns, beams and braces that form central of the concentrically braced frames should must not undergo local buckling and should must be compact enough to provide certain ductility capacity.
Local buckling should not occur in order for the must be prevented for horizontal load-bearing system elements to make perform sufficient plastic deformation . The conditions 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 must therefore be observed.
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