(Please visit the site to view this file)Hi,
I am looking at a simple frame model and puzzled about the effective length and elastic critical moment from the design output.
A column is split into several sections but the effective length is defined using the LY and LZ commands. In the output file, I can see that the defined effective length is used for slenderness ratio and compression capacity. But in the section of "Buckling calculation", the effective length changes back to the distance between the start and end nodes (analytical beam length). I also find that the calculated elastic critical moment for LTB increases when the analytical beam length is reduced. This seems not logical to me.
Can anyone help on this matter? The command file is attached as a text file.
Cheers,
XGU