Design for combined axial and bending (concrete column: EC2)
Tekla Structural Designer designs the column for an applied axial force and applied bending about one or both axes of the section. In the case of bi-axial bending, a resultant moment is created for the combination of the applied moments.
√(M2major + M2minor) / √(M2major,res + M2minor,res) ≤ 1.0
Where
Mmajor = Moment about the major axis
Mminor = Moment about the minor axis
Mmajor,res = Moment of resistance about the major axis
Mminor,res = Moment of resistance about the minor axis
Tekla Structural Designer adopts the above approach in preference to the simplified method specified in equation 5.39 of EC2 as it has a wider range of application.