Slenderness ratio of braces are automatically checked Eq. F1-1 and reported by programme.
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)
Braces must have a slenderness ratio not to exceed the limit value is determined according to eq. F1-1.
Slenderness ratio of braces are automatically checked with Eq. F1-1. This condition must be fullfiled under the axial compression or tension force of the cross-section in order to plasticize the structure to absorb necessary amount of energy.
Braces must be determined by taking into account with the load combinations including seismic effects determined by the relevant building codes.