Steel design
Contents
- Automatic beta factor calculation
- Improved lateral torsional buckling
- Other buckling lengths improvements
- Steel fire design improvements
- Steel joint utilization summary
Automatic beta factor calculation
FEM-Design 18 can automatically calculate beta buckling factors. When calculating buckling factors, the program considers:
- stiffness of connecting bars,
- bar's end conditions,
- supports,
- whether the bar is sway or not.
Reference
Improved lateral torsional buckling
LTB for top and bottom flange
It is now possible to define different lateral torsional buckling lengths for top and bottom flanges of steel bars. Checking For both flanges option in the tool window makes it possible to use the same buckling lengths for both flanges.
Due to this modification, lateral torsional check is now carried out independently for top and bottom flange of a bar.
Continuously restrained option
Continuously restrained option is now available for Lateral torsion buckling.
Other buckling lengths improvements
Two new options are now available for buckling lengths of RC, steel and timber bars.
Set beta factor
It is now possible to can set the same beta factor for more types of buckling lengths.
Copy buckling length
It is now possible to copy all selected types of buckling lengths from one bar to another.
Procedure:
- Select the types to copy.
- Select the source bar.
- Select the destination bar.
Steel fire design improvements
Member surface emissivity and Adaptation factor have some additional value options in the side menu.
Steel joint utilization summary
Check the Show summary option in Steel Joint module in order to get an overview of all checks performed on a joint.