Column Instability

Calculation of equilibrium instability of isolated rods giving importance to the second order effects derived sollecitations.
Are considered:
- bendability of the element
- restrains
- eccentricity of the first order
- meccanical behaviour of materials
- viscosity
It is possible to make the calculation on columns made only of concrete as well as on reinforced concrete.
Is included a theorical explanation with related aiding graphs.