Buckling ratio for steel structures in SCIA•ESA PT

[Tips&Tricks]

The user who performs a first order calculation, has to take care that a correct input of the buckling ratio ky and kz is ensured. These values can be calculated by SCIA•ESA PT if certain conditions are satisfied.
In the other cases, it's possible to input them manually.

This manual input can be done by choosing 'Steel > Beams > setup' or via the property menu of the concerned beam by clicking the option 'Buckling and relative lengths'.

A third – more recent- method is via the Member buckling data in the steel menu.

If the buckling ratio do not satisfy the conditions for the automatic calculation by SCIA•ESA PT (see Steel code check – Theory), then these can be calculated through the critical load coefficients.



Here a trick can be used in the buckling data. After a stability analysis is performed, it can be applied in the buckling data.

Next, the calculated/inputted coefficient can be claimed.