Rc: Unit less compression load ratio (applied load/calculated critical load)
• Rb: Unit less bending load ratio (applied load/calculated critical load)
• Rlp: Unit less lateral pressure load ratio (applied load/calculated critical load)
• Rhp: Unit less hydrostatic pressure load ratio (applied load/calculated critical
load)
• Rt: Unit less torsion load ratio (applied load/calculated critical load)