Ultimate Limit State Check
The following ULS checks are available:
unity check
The unity check is the maximum of the section and stability check.
section check
The section is checks only depends on the section (tension, compression, bending, shear, ...).
stability check
The stability check depends not only on the section but on the whole beam behaviour: buckling and lateral-torsional buckling.
For more information read the Timber Code Check Theoretical Background.