To further demonstrate my point, I've changed the fixity at the ends to reduce the hogging moment to something nominal (circa 1kNm):
and as expected I'm getting massive failure in the bottom flange, as now it's using the max moment of 490kNm in the LTB check for the bottom flange...
Is this...
Thanks all, just for clarification I have a beam with fully restrained top flange, unrestrained bottom flange.
The beam is fixed ended, and so goes into hogging.
I am using Tekla Structural Designer, and there is an article here which gives some more explanation...
Hi,
I'm posing this question, as it seems that Tekla Structural Designer is using the maximum moment when checking the LTB of the bottom flange, for a fixed ended beam, this max moment in the section can be a sagging moment (i.e. bottom flange in tension), if it has the greater magnitude.
I...
