STAAD.Pro Help

Section Coefficient

The net section coefficient refers to the ratio of net section to gross section area and section modulus (temporarily replaced by net section modulus coefficients an, WNZ and wny). The default value is 1.0.

The reduction coefficient of seismic bearing capacity of bracing is to reduce the bearing capacity of members in the presence of seismic load. The effective section coefficient of axially loaded members refers to (considering article 7.1.3 of code GB 50017-2017) that for axial tension and axial compression members, the area of dangerous section is multiplied by the effective section coefficient h in case of indirect force transmission.