Commentary of Highly Ductile Members

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)

Spacing of stability braces for highly ductile members is specified not to exceed 0.095r_yE/(R_yF_y). This control is done automatically and reported on the beam elements of the frame.

Open