Figure 5: Estimated buckling strengths of Sxa.

The relative buckling strengths, (Ps − Pc)/Pc, of the 31 Sxa whose profiles were measured in Section Measurement of Sxa profiles are estimated using our structural mechanics model an are shown as red squares. The dashed, black line indicates the median of the Sxas’ relative buckling strengths. The solid, blue line denotes the maximum possible enhancement of buckling strength, which corresponds to the Clausen column.