Ultimate limit state (buckling) (Beams: BS 5950) Click the links below to find out more: Lateral torsional buckling resistance, Clause 4.3 Lateral torsional buckling resistance, Annex G Compression resistance Member buckling resistance, Clause 4.8.3.3.1 Member buckling resistance, Clause 4.8.3.3.2 Member buckling resistance, Clause 4.8.3.3.3