Bimoment resistance
The stress caused by the bimoment is calculated with the help of elastic theory. Therefore, these cross-sections are automatically designed as classes 3 or 4. The resistance is calculated in four points (corners of the cross-sections), where are the worst results expected. The resistance is calculated using following expression:
Where is: | Iω |
|
ω |
| |
fy |
| |
γM0 |
|