2b. Highly Ductile Members per AISC 341-16 with ideCAD

How does ideCAD control the maximum spacing of highly ductile beams according to AISC 341-16?

Symbols

F_y = Specified minimum yield stress
R_y = Ratio of the expected yield stress to the specified minimum yield stress, Fy
L_b = Length between points which are either braced against lateral displacement of compression flange or braced against twist of the cross-section, in. (mm)
r_y = Radius of gyration about y-axis, in. (mm)
E= Modulus of elasticity of steel = 29,000 ksi (200 000 MPa)

In addition to the requirements of Sections D1.2a.1(a) and (b), and D1.2a.2(a) and (b), the bracing of highly ductile beam members should have a maximum spacing of

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