Symbols
E = modulus of elasticity of steel, ksi (MPa)
Lc = effective length of brace = KL, in. (mm)
K = effective length factor
r = governing radius of gyration, in. (mm)
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Basis of Design
According to AISC 341-16, SCBF Special Concentrically Braced Frames are expected to provide significant inelastic deformation capacity primarily through brace buckling and yielding of the brace in tension.
Members
Basic Requirements
Columns, beams, and braces should provide the requirements of Section D1.1 for highly ductile members.
Diagonal Braces
Braces should provide:
Slenderness ratio: Lc Lc/r ≤ 200
The brace brace’s effective net area is not less than the brace brace’s gross area.
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