NEd: Design norma] force
Npl,Rd: Design plastic resistancc to normal forces of the gross cross-section
MEd: Design bending moment
My, Rd : Design values of the resistancc to bending moments, y-y
Mz, Rd : Design values of the resistance to bending moments, z-z axis
hw: depth of a cross section
tw: web thickness
fy: Strength of axial compressive force available according to Section E
Ϭx,Ed: Design value of the local longitudinal stress
YMO : Partial factor for resistance of cross-sections whatever the class is
YMI : Partial factor for resistance of members to instability assessed by member checks
YM2 : Partial factor for resistance of cross-sections in tension to fracture
6.2.9 Bending and Axial Force
18.104.22.168 Class 1 and 2 cross sections
For class 1 and 2, interaction of axial force and bending moment is considered according to Eq. 6.32.
For a rectangular solid section without fastener holes MN,Rd
There is no interaction if the belowed equations are satisfied for doubly symmetrical I and H sections.
There is an interaction if the belowed equation is satisfied for doubly symmetrical I and H sections
22.214.171.124 Class 3 cross sections
The maximum longitudinal stress should satisfy Eq. 6.42.
126.96.36.199 Class 4 cross sections
The maximum longitudinal stress should satisfy Eq. 6.43.