This calculator computes the critical load of the specified column. In addition, the boundary condition factor and the effective length of the column are also calculated.

Both theoretical and engineering results are presented. The theoretical critical load is obtained directly from the elastic buckling theory. The boundary conditions are considered to be perfect as specified. The engineering critical load is used in column design, where the ideal boundary conditions are approximated.

Note:

1.

The critical load is good for long columns, in which the buckling occurs way before the stress reaches the compression strength of the column material.

The formula for the critical buckling load is derived in the elastic buckling section and summarized in the critical load section.

The critical load (Extended Euler's formula) for a column is given by,

where E is the Young's modulus, I is the area moment of inertia of the cross section, and L_{eff} is the effective length of the column, which depends on the length of column as well as its boundary conditions.