回复:
最大比 b/t 和 h/w 根据杆件的内力在表 1 或表 2 的基础上计算得出。 For members subject to pure axial compression, Table 1 is used. For members subject to flexure or flexure+axial (beam-column), Table 2 is used.
In RFEM, the preset setting is to neglect the bending moment if the ratio is less than 1%. Therefore, the program shows “Class 4” since the check is based on Table 1.
To change this setting, go to Details and set the limit values to zero (as shown in Image 1). By doing so, the program runs the check per Table 2 and no longer ignore the small moments.
Note: In the example model, where moments are zero at the support locations, the result is still shown as “Class 4 (non-designable)”.
常见问题和解答 (FAQ)
